1991 TMS Fall Meeting TECHNICAL SESSIONS October 21-24, 1991 The numbers in bold type on the right of each ge88ion title indicate the page on which that session is 1iaud in the Fall Meeting Technica1 Program. Sessions will be in the Cincinnati Convention Center. Seuion Title
nay
Room
Page
Composites I ......................................................................................... ..................... ..... Monday AM
210
1
Composites II .....................................................................................................__ ........... Monday PM
210
12
Computer Simulation Applied to Phase Transformations I ............................ ........... Monday AM
214
2
Computer Simulation Applied to Phase Transformations II ...................................... Monday PM
214
13
Computer Simulation Applied to Phase Transformations III ..................................... Tuesday AM
214
24
Computer Simulation Applied to Phase Transformations IV ...................................... Tuesday PM
214
37
Conductors from High Tc Ceramic Materials: Theory and Fabrication I: Rare Earth Based Systems ............................................................................................ Wednesday AM
201
4"
Conductors from High Tc Ceramic Materials: Theory and Fabrication II: Conductor Processing ......................................................................................... ............ Wednesday PM
201
61
Conductors from High Tc Ceramic Materials: Theory and Fabrication III: Theory and Conductor Processing ................................................................................. Thursday AM
201
73
Defects, Structure and Transport ........................................................................ ... ...... Monday AM
206
3
Deformation Mechanisms I ............................................................................................ Tuesday AM
206
25
Deformation Mechanisms II .......... ................................................................................ Tuesday PM
206
3B
Deformation Mechanisms III ......................................... , .................... , .................... , ..... Wednesday AM
206
60
Developments in Advanced Aerospace Materials I: Aluminum·based Materials ...... Monday AM
211
4
Developments in Advanced Aerospace Materials II: Aluminum· and Beryllium-based Materials .. ............... ............. ........................... ........ Monday PM
211
I.
Developments in Advanced Aerospace Materials III: Nickel-. and Titanium-based Materials ... ........ ............................................................. Tuesday AM
211
26
Developments in Advanced Aerospace Materials IV: Intermetallic- and Ceramic·based Materials ................................................................ Tuesday PM
211
3"
Environmental Effects I ................................ ................................................................. Monday AM
300
5
Environmental Effects II ............................................................................................... Monday PM
300
14
Fatigue & Crack Growth ............................................................................................... Thursday AM
207
74
Fracture .......................................................................................................................... Monday PM
206
16
Fundamentals of Crystallography: A Tutorial I .... ....................................................... Monday AM
207
5
Fundamentals of Crystallography: A Tutorial II ......................................................... Monday PM
207
17
lUgh Strain Rate Behavior of Refractory Metals & Alloys I ..................................... .. Wednesday AM
20B
51
High Strain Rate Behavior of Refractory Metals & Alloys II .................. ........ ............ Wednesday PM
20B
62
High Strain Rate Behavior of Refractory Metals & Anoys III ..................................... Thursday AM
20B
75
TMS Fall MeetinK-Ct
SeMion Title
Day
IWom
Page
Intennetallic Compounds .............................................. ................................................ Monday PM
215
17
Joining and Welding .......................................... ............................................................ Thursday A:M:
200
76
Kirkendall Effect Symposium On lnterdiffuaion and Phenomena that Depend on Net Vacancy Flows I: Historica1 Significance of Kirkendall Experiments on the Understanding of Diffusion ........... .. .................................................. ................. Tuesday AM
207
27
Kirkendall Effect Sympoaium on Interdiffilsion and Phenomena that Depend on Net Vacancy Flows II: Binary Interdiffusion and the Kirkendall Shift: ..................... Tu.sday PM
207
40
Kirkendall Effect Symposium on lnterdiffusion and Phenom.na that Depend on N.t Vaca ncy Flows III: Defects in Diffusion .................. ............................ Wednesday A:M:
207
52
Kirkendall Effect Symposium on Interdiffusion and Phenomena that Depend on Net Vacancy Flows IV: Multicomponent Diffusion ................................... Wednesday PM
207
63
Material Processing I ..................................................................................................... Monday AM
201
6
Material Processing II ............................................................................. ....................... Monday PM
201
18
Metal Science of Joining I: Joining Fundamentals A: Welding ................................... Monday AM
200
7
Metal Science of Joining II: Joining Fundamentals B: Brazing and SOldering .......... Monday PM
200
19
Metal Science of J oining III: Joining Metallurgy A: Microstructures and Analysis .. Tuesday AM
200
28
Metal Sci.nce of Joining IV: J oining Metallurgy B: Mechanical Beha vior and Modeling ......................... ....... ........................................... ....................... Tuesday PM
200
40
Metal Scienae of Joining V: Welding Proceases ................................ ............................ Wednesday AM
200
53
Metal Scienae of Joining VJ: Methodologies ................................................................. Wednesday PM
200
64
Novel Processing, Defects and Properties of Diamond and Diamondlike Thin Films I .................................................................................. ........... Tuesday AM
201
29
Novel Processing, Defects and Properties of Diamond and Diamondlike Thin Films II ....................................... ..................................................... Tuesday PM
201
41
sec Phenomena & Mechanisms .............................. ..... ................................................ Monday PM
302
20
Parkins SympolfJium on Fundamental Aspects of Stress Corrosion Cracking II: Environmental Aapectll .... ............ .. .............. ..... ................................. ............ ................ Tuesday AM
302
29
Parkins Symposium on Fundamental Aspects of Stress Con-osion Cracking III: Mechanical Aspects ............................ ............................................................................ Tuesday PM
302
42
Parkins Symposium on Fundamental Aspects of Stress Corrosion Cracking IV: Metallurgical Aspects .................................................................................................... Wednesday AM
302
54
Parkins Symposium on Fundamental Aspects of Stress Corrosion Cracking V: New Capabilities in sec Resean:h ............................................................................... Wednesday PM
302
65
Parkins Symposium on Fundamental Aspects of Stress Corrosion Cracking VI: Con trol, Mitigation and Prediction ............................................................................... Thursday A1rS
302
77
Phase Diagram Prediction I: Fundamentals and Phase Diagram ReprelJentation, International Symposium ........... ................... ..... .. .. .......... .. .. ............. Monday AM
204
8
Phase Diagram Prediction II: Data Bases and Prediction Programs, International Symposium ................................... .... .......... ........................................ ..... Monday PM
204
21
Phase Di8il'am Prediction Ill: First Principles Calculations, International Symposium .................. ................................... .................................... ..... Tuesday AM
204
30
Parkins Symposium on Fundamental Aspects of Stress CotTosion Cracking I:
C2-TMS Fall Mcetins
Souion Title
Page
Room
DBY
Phase Diagram Predktion IV: Thennodynamics and Phase Diagram•• International Symposium .............................. ........................................................ ........ Tueaday PM
204
43
Phase Diagram Prediction V: Phase Diagram Evaluation and Applications. International Symposium ...... ................... ............................... ....... ........ Wednesday AM
204
55
Phase Diagram Prediction VI: Ferrous Phase Diagrams and Other Applications, International Symposium .............................................. ... .. .................... Wednesday PM
204
66
Phase Transfonnations I ................... ..................................... .. ..................................... Wednesday PM
206
67
Phase Tronsfonnntions 11 ..............................................................................................Thursday AM
206
78
Physical Metallurgy of Intennetallic Compounds I: Alloy Modeling .................. ........ Monday AM
202t.H2
9
Physical Metallurgy oflntennetallic Compounds II: Engineering Design .... ............. Monday PM
2021212
22
Physical Metallurgy oflntennetallic Compounds III: Titanium Aluminides 1 .......... Tueaday AM
2021212
32
Physical Metallurgy of Intennetallic Compounds IV: Nickel Aluminides 1 ............... Tuesday PM
202/212
44
Physical Metallurgy oflntennetallic Compounds V: Titanium Aluminides 2 ........... Wednesday AM
2021212
56
Physical Metallurgy oflntennetallic Compounds VI: Nickel Alumirudes 2 .. ............. Wednesday AM
2031212
57
Physical Metallurgy of Intennetallic Compounds VII: Titanium Aluminides 3 .. .... .. Wednesday PM
2021212
68
Physical Metallurgy of IntennetaJlic Compounds VIII: Advanced Intermetallics 1 .. Wednesday PM
2031213
69
Physical Metallurgy of Intennetallic Compounds IX: Titanium Aluminides 4 .......... Thursday AM
2021212
79
Physical Metallurgy of IntennetaJlic Compounds X: Advanced Intennetallics 2 ...... 'Thursday AM
2031213
80
Physical Metallurgy oflntennetallic Compounds Xl: Poster Session .. .... ................... Monday. Tuesday. Wednesday AMJPM
2021 212
Processing and Manufacturing of Advanced Materials for }{jgh Temperature Applications I: Powder Processing and Combustion Synthesis ............ Monday AM
2031213
10
Processing and Manufacturi ng of Advanced Materials for IDgh Temperature Applications II: High Temperature Protective Coatings ......... .... ..... ... . Monday PM
203/213
22
Processing and Manufacturing of Advanced Materials for High Temperature Applications III: Reactive Infiltration and Related Techniques ........... Tuesday AM
2031213
33
PrOC088ing and Manufacturing of Advanced Materials for High Temperature Applications IV: Melt Processing of Composites ............. ............ .......... Tuesday PM
2031213
45
Quasi ·Brittle Fracture I : Fracture Mechani sms ...... ........ ................................... .... ..... Tuesday AM
300
34
Quasi-Brittle Fracture II: Dislocation Mechanisms .....................................................1\Iesday PM
300
46
Quasi-Brittle Fracture III: Toughening Mechanisms .................................................. Wednesday AM
300
58
Quasi·Brittle Fracture IV: Dynamic and Interfacial Fracture .. ....................... ........... Wednesday PM
300
70
Recent Developments in the Annealing of Sheet Steels I: Continuously Annealed Steels: TechnologylProduction .... .. ..... ..... ......... .... ................. . Tuesday AM
210
35
Recent Developments in the Annealing of Sheet Steels II: Continuously Annealed Steels: TechnologylProduction ......... ........ ............................................ ......... Tuesday PM
210
47
Recent Developments in the Annealing of Sheet Steels III: Continuously Annealed Steels: Metallurgy A .................................. .................................................. .. Wednesday AM
210
59
Recent Developments in the Annealing of Sheet Steels IV: Continuously Annealed Steels: Metallurgy B ...................................................................................... Wednesday PM
210
70
10.22.33. 45. 58,70
TMS Fall Meetini-C3
Session Title
Day
IWom
Page
Recent Developments in the Annealing ofShNt Steels V: Batch·Annealed Steels: TechnologylProduetion .......................................................................................Thursday AM
210
81
Solid State Amorphizing Transfonnations I ................................................................ Tueeday AM
215
36
Solid State Amorphizing Transformations II ............................................................... Tuesday PM
215
48
Solid State Amorphizing Transformations m .............................................................. Wednesday AM
215
60
Solid State Amorphizing Transformations IV .............................................................. Wednesday PM
215
n
Structure and Properties of Beryllium and Ita Alloys I: Beryllium Processing and Properties .... ........................................................................ Wednesday AM
211
60
Structure and Properties ofBeryUium and Ita Alloys II: Beryllium ProceMing and Nuclear Applications .... ..... ......... ........................................ Wednesday PM
211
72
Structure and Properties of Beryllium and Its Alloys III: Beryllium Intermetallic Compounds ........................................................ .................... Thursday AM
211
82
Structure and Properties of Metal·Ceramic Interfaces I ........... .................................. Monday AM
208
11
Structure and Properties of Metal·Ceramic Interfaces II ......................... ............ ....... Monday PM
208
2.
Structure and Properties of Metal·Ceramic Interfaces III .......................................... Tuesday AM
208
36
Structure and Properties of MetAl. Ceramic Interlaces IV .......................................... Tuesday PM
208
48
Transformation Kinetics in Sha pe Memory Alloys I .................................................... Wednesday AM
214
61
Transformation Kinetics in Shape Memory Alloys II .................................................. Wednesday PM
214
7.
Tutorial Lecture ............................................................... .............................................. Monday. 12:00 Noon 203/213
C4-TMS Fall Meetina
12
1991 TMS FALL MEETING. CINCINNATI, omo, USA OCTOBER 21 - 24, 1991 MONDAY
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2021 212
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TMS Fall Meetini,-C5
1991 TMS FALL MEETING. CINCINNATI. omo. USA OCTOBER 21 - 24. 1991 TUESDAY
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AUTHOR'S COFFEE SLIDE PREVIEW AREA
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Abstract Form E
Please see reverse side before filling out this forml Please Check Meeting Submitted lor:
Please Check Ona Presentation Type:
o
o General Abstract o Poster Session o Committee Sponsored Comm~
.. Nam. __________________________
a
TMS Annual Meating (FabnJary/March) Postar Session TMS Fall Meeting (Septamber/October)
o
OtheT ______________
,,_=.,.,_,,_ =. 0;--------------
Tille 01 Symposium (II Committee Sponsored) _________________________________________________________
If GENERAL SUBMlnEO ABSTRACT, indicate desired category and key word(S) • H8 keyword category listed on reverse side-and mail 10: Abstract Editor, !MS, 420 Commonwealth Dr., Warrendale, PA 15086.
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II INVITED OR COMMITTEE-SPONSORED abstract, indicate the sponsoring committe. or session title in above right of this abstract and mail directly 10 the session organizer listed in JOM, Call for PllpflfS announcement. AUTHORS & CO-AUTHORS: Names and full mailing addresses (SH sample on reverse side). Please provide a telephone number where alle8s1 one author can be contacted.
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NOTE: If GENERAL SUBMJTIED ABSTRACT, Indbt. ~.Ired c.tegory and key word(a}--Me kayword category lIatlid on r.v.r.. alde-lnd mall 10: Abstract Ednor, TMS Commmonw.. lth Drive; Warr..,dala, PA 15086. ABSTRACT: Approximately 150 words. (1) TrnE OF PAPER, (2) Author's names and lull addresses (UNDERLINE NAME OF PRIMARY SPEAKER), (3) Abstract. Single space an typing. SEE DETAILED INSTRUCTIONS ON REVERSE SIDE.
L TMS Fan Meeting-C7
ABSTRACT FORM FOR TMS CONFERENCES Use the form on reverse side. Addllional forms are available from Abstract Editor, The Minerals Metals & Materials Society (TMS). 420 Commonwealth Dr., Warrendale, PA 15086.
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pap9f, black ribbon and clean keys. All CAPS lor title 01 paper. 2. Underline name 01 author presenting papor. 3. Single space throughout.
SAMPLE
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4. DO NOT TYPE OUTSIDE RULED AREA. S. Omit tables and lists of references. Write all mathematical expressions clearly if not typed. Use the names 01 Greek letters (alpha. bela, etc.) if not typed, Draw structures carefUlly. Type thaleHering if possible. 6. One original and one photooopy are required.
Do not paragraph. Type to full width of form.
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KEY WORD CATEGORIES
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FOR GENERAL ABSTRACT SESSIONS
List matarial category letter and technical category number to classify the abstract.
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KEY WORD CATEGORIES FOR GENEBAL ABSTRACTS MATERIAL CATEGORY A. Mlnlrall B. MelalS B.l Ferrous B.2 Non·Ferrous B.3 Superalloys C. D. E. F.
Intermltalliel Ceramics Polymers EllCtronlc F.l Magnetic F.2 Semiconductor F.3 Superconductor F.4Optical G. Composites
1.
2.
TECHNlCAL CATEGORIES Coatlnga and Thin Films Deposition Cleaning/Adhesion Bonding Surface Modification Deformation
C,... Dislocation Interactions Rate Effects Microstructure & Texture Forming superprasticity
C8-TMS Fall Meeting
3.
•• ••
•• 7. •• ••
PhYllcal Propert... Electrical Magnetic Optical Thermal environmental EffltCts Corrosion Stress Corrosion Dissolution Embriltlement Extrlctlon Ind Processing Pyrometallurgy Aqueous & Electrochemical PfOC4lSS Fundamentals Process Mineralogy Recycling Residues & Effluents Fltlgu. Fr.ctur. High Temperature Dislocation Interactions MicrostructurQ & Texture Interfaces Pha.. Tran.formatlons & Structu"t Evolution Thermodynamics Kinetics Alloy Phase Structures Modeling Material Simulation Process Analysis PhysicallMechanical Behavior
1•.
11.
12.
13.
PoWd.r T.chnology PfOC4lssing SyntheSiS Proper1ies Solidification Rapid Solidification and Amorphous Materials Joining, Melling & Welding Characterization Processirlg
Structure
Point & line Defects Surfaces and Interfaces Characterization & Identification W.. t Ph.nomena Surface Modification Erosion and Oxidation Enviornmantal Effects and Ttibology
Sug~sted Topics (01" Additional G./Mr.1 Abstracts
TMS
TMS Fall Meeting-l
Minerals· Metals· Materials
1991 TMS FALL MEETING Featuring PHYSICAL METALLURGY & MATERIALS PROGRAMMING October 21-24, 1991 Cincinnati, Ohio
TECHNICAL PROGRAM
,
MONDAY A:\'l mixing silicon carbide particles into tbe molten ma~ oesium alloy tollowed by squeeze c •• tlng at 140 WPa
COMPOSITES I
pres e ure .
TMS GmenlJ AbstrllCt Session Mon
Room: 210 Cincinnati Convention Center
Session Ch#imum: James P. Lucas, MS 8311, Sandia National Laboratories, P. O. Box 969, Livermore, CA 94551 (8,lO •. •• )
SLIDING WE1I ~ BEHAVIOR ~ SlCp I\EIIIFQJo::EO .lLUIUNl.M COIIl'05ITBS, J. M. Bol.l. . u , ". T . """'lon, J. ". Zindd, .nd C . P. You, $c;...,tl!1~ ...... ~cuo I.obo.~tory, '0. <1 ""'tor Co., P . O. 110.. 205l, Ito. S-~Q(;S, o.o.bon>, MI t8111 - 20~ . ThO addition of _.r.ta ...,.." ... of c • • &aic particula t . ninfore_n. ha. 1>00>0 oI\Own to ;.provo ~ o j iding ...... propo.t.i. . of conv
0havi.or of • 2124 aLual.n ..... SiCp c"""POoit . "" 0 in ... atigat.oq. _It~<>ndly. tho _ c hooni_a of _or qi~I"9" r iso to t lto "",. .nted heh.~ior ven auain*
l e,!oQ •.•. J RESIDUAL STRESSES IN ALUMINUM ALLOY MATRIX COMPOSITES: ~ J . J. Lewandowski end G. Michel. Department at Materials Science and Engineering. Cese WestBrn Reserve University. Cleve)and Ohio 44106 X-ray difft'action techniques utilizing peak shift and peak broadaning were used to mGaSUM th9 r&siduQl streSS9s in aluminum alloy basad compos~es reinforced willi e~har SiC or AI2D3 partic:ulatn. Samples were heatlreated to as quenched, unclaraOed, peak aged, overageG, and annBaled condaiorlS to determine lIle affecls 01 hNIlfeatrnant and reinforcements on lIle residual stress. Othlr sa~1es WIIre delonned 10 various levels (0.5'1'0,1 .0%,1.5%. 2%) 01 plastic strain 10 study the efleet of deformallon onihe resi6..lal st ress. TEM and SEM were used to characterize Ihe microstIUdures. The residual stress measurements obtained will be compared to lhe dagtltll at Bausc:hlnger effecl exhibited by equivalent samples. (9 ,10 • . •• )
PROCESSI NG AND PROPERTIES OF AZ91 MAGNESIUM WATRIX REiNFORCED WITN S I LICON CARH I DE PART I ClILATE: Gar~ Roz"k . J.J. Lew a ndowski and J.F. 'allacs, Dept . 0 notsrial$ Sclenca and Englneer1nr. CI$C Wastern r.ase rve University, 10900 Euclid Ave., Cleveland, Ohio 4 4 106. An AZ9 1 magne.l~ alloy has been reinforc e d wit h $illcon c.rbide par ticulate$ to form a magnesium matrix composit e . The c<>mposita "'aa produced by stir
The age hardening beh avior
ot th
.18 evalulted with hardness testing wbile tensl1e pro perties .ere generated on specimens heat treated to • peak aged condition . The reinforcement produces increased value a ot tbe elastic modulus an d yield st rength. Th e fracture surtaces we re analyzed using • Scanning Ele ctron ~lcroscope. The present a tion will focus on the microstructures produced and resulting meChanical properties. (9,)0 • . • • J
" ST1Jl)Y 0Jj THE FULURE IlHAVIOR Of THE PAllTlCUUTE REINFORCED ALUHIHllH ALLOY C~S!TES UNDU UNIAXIAL TENS!ON: ~ nd J;. N. S~bU"'Dl.D, Doparc •• nC of K... I1~c.y . Ho
'u" .....
u
T.no l1* c . . ti.d o~t at r _ u.poutuu On o1_ln"" . 1I0y reinforc. d with SIC . .d Alto] p.. Ueuh .... Althouah a ai.ni Ucnt Jnereau 1n . tunlth co~ld be ach1ovod b1 1n.. od.~cJnc <*u_ie rdnforce_nto inro tho aluainua .lloy ..orb. It I . ...od.t e d with. oubotanthl d.c . . . .. in f • • ctu ••• t .. ln. in ordor Co und.ror.nd rh . ... .on for tb~ Inf.rior ductl11ty of ouch c_pooit. . . nal,tlcol .olu tion. ..or. ob .. {~*d .olnC " . h ,pl . <"",,,00 1<. _dol . S!I! "Cudl... _r. con{ .. d Que _ tho old. ourf •••• 01 th. frae . ured ope
.. .. . J
EH'ECT OF CD1.J) KOLLlroG ON THE !USTIC PROPu'TIES OF (U10]Jp/"l COIlPOSIn, J. C. Loo . nd Il. N. Subro ... nlon D.p . .... n. o f IIotoUU> I1 . M.ch. nic o .nd lIo'erloh S
lIoohan1cd I hap1n. of .n al~ _ ln"'" .lloy rein forc. d " H~ A120)par:lcubu I
DYNAMIC MECHANICAL RESPONSE AND MICROSTRUCTURAL EVOLUTION OF AN Al2D3 REINFORCED ALUMINUM-MATRIX COMPOSITE' s.J.....I::!gng and G. T. Gray ttl. Los Alamen National LaboratO
2-TMS Fall Meeting and aged to il'lduce Mg2Si preclpitatas in me matrix. The $ubstruc1ufe evolution in samples with two different heat treatment cond~ions (annealed and aged) has been studied using TEM. The eHIICI of matri~ microstructule on the !.l19ss·strain IIIsp:lflse and wbslruC1ur9 development will be diSCU$$IId. The strain-rale sens~ivily and strain· tlarQening behavior 01 a 1060 N-AI203 compos~e will be compared to those of 0Ih91 AI malrix CQI!lposites • • WDlk performed under the auspices 01 the U.S. Departmenl of Energy.
.....c.:; ...
~ .: ";::" .:S;u. Volumt Fraction and Malri, Strtnglh
AI ·SiC p Compositos
~
~~~tBt~± lonu. Dept. of Male.ials Science and :~;',:;~,;;.MiChigan. Ann Arbor. Ml .nd Anil K. •,
L.tboutories, W.~n, MI
,.
molal aluminum
" ...
Sponsored by ASM-MSD Computer Simulation Committee and TMS Chemistry and Physics of Materials Committee Monday, A.M. October 21,. 1991
Room: 214 Cincinnati Convention Center
Sesswn Chairman: P.e. Clapp. Center for Materials SimuJation. Institute of Materia1s Science• University of Connecticut, Storrs, cr 06269-3136 \9:00 ..... ) (Invited) fIRst PRINCIPLES c.\LCUUTIOIiS APPLIED TO DISPUCIVE PHAS[ TUNS_ FOIIltA!lOll$ . Bruec HI,"""" and X. lI. flo, . . . La bontory __ USOOE and Dopon Olent o"f"""TIi1o~d A. . .one.y, 1""" Sta te Univu. Uy. A... . . T/I. 50011, lihU e mod.! !"tu.toOllc potcntlal o h . ve houri .t le vol". fo. n udy!n, I cnord upoet o of ph."" trano for ... _ tions vb eo.puter d .... I • • ion • • the y . . y h ove tr""l>lo In d . .o r lb_ I", • • poo H!o 'ransf"".. <1o". a l""o , ubU. d .etronle tntorI c.iono faquontly ,overn the Ollnl ...... O"OT, y pa th .nd bl Trie T Il o lgn to bot~en phu " . Ve ry proche , flut prine!pl . . ,0 • • 1 .... rgy c al cu la <1on. el" dcter.in" ouch p. . ho I nd b. rri ... Ind . ho
,.eat
iIi
,•
ilil
110,!>O .. .. ,)
INFlLTRAT10N Of UQUIDS NIl) DERJRMABLE POROUS MEDIA 10m! 1. $ogpntr" and Andreu Mortens
COMPUTER SIMULATION APPUED TO PHASE TRANSFORMATIONS I
with
ethyl~ ,I~,
FIIIIher experimentalion on lhe
illfdtmion of cold Saffd™ fiben wllh pu~ liquid aluminum i. preoeolled and com~ with lhe
INFD..1RATlONOFFlBER PRERJRMS BY A BINARY AlLOY Ytmo;C"C 1 Michawt and AndruI ~ .... llI:pu1mmt of MaItriab Sciaw;c Aftd En3inenin,
Mus..chusetU: Inllilll~ of Teo::hnology
Carobrid&e. MA 02139
Dtarina: irIfiltmion of. fibu pttform by. binlry lIyp;lOuteo;tic alloy. solid metal can form in the eunposite bocttuse of li llie fibm ... II the mold WlllJ. This ~.ut .. in maercuel"',llion ond mie ..... truclu .... helCl"O"' .... i'y in rho final mmposile, SaffilTM 6-aluminl fiber ~forms are Cllmbined with AI· ...S wI ~ Cu usin,. pRSSUI'e iru~u.tion .w-nnn. £Xpcri.mc:nlll ~ ue dcsi&nCd 10 produce wnpLes infilu.ied under ... "'.lIIIi.IbatiI: conditicno and COIUWI! "PP1led pn:u=. Macrost~ption profiles m1 rnicmswcturaI feanues U'e anal~ and <:<>mpU'Od willi ",...11. from lheoreIical 1ZIII)'iU of heat. flow W I1IUI II"UIsfc:r dun", infilu.lion unde. such COIIdilions. Wettin, of the .oIumiM fibers by the alloy and penneabi~ty of IIIe fiber prdtna "",lainin, IIIlid metal"", .01111 invetti~ lit _-adiahllic infdu.oon, cooIin,.t the mold walls is IIhoorm w relUl! III Iddilional composili"",,1 yari.lion. in the Clst sample.. 11I«Rlical arW~ ~ weD with e1pcrimmtal dII:t and it \lied 10 clerioe ,.amal ~te
coolin,
processinl conditions.
'0
(9:30 a ... . ) (Invited) OR.DERING MECHANISMS IN METALLIC ALLOYS. G..M. ~ ud D.M. Nicholson. Olk Ri~ National Lab, Oak Rid,;e, TN 17831~114, W.A. Shelton, Nual R.esearcb Lab, Wubin&1
The denrollic medtiIJIisms uDdcrlyin& Ipeci6c order/disorder trlllsformatioDi in metallic alloys wiU be investigated bued 00 I first principles description of the eDer&etitli of the disordered state and of C01lQl!Dtration nuttuuiQDI. In 01101 systeml where competillJ Hume-Rothery faclon are involved the tbeory al.Iows OM to alXeu their relative import",,,;e aod 10 identify them wilh feal~re:l in Ihe electroDic structure. AlloY' sy,tems of topical iDlercst wiU be discussed inciudi"ll qulli-ordered illlermeullic B2traositiQII met.! aluminides. (ifrlite
U11.OO ~.m . )
In uunt yean tbe clauical tbeoiy of Iluclealion h.u been. sbown to be incomplete. lA particulu in Iyltems with long ' U&e interACtio ... fOT deep quenches the proximity of a 'piDod'" sin&uJarily It'o~y affeell tbe nuclealion lite as well u t be morpbolou of the aitical d,opJel. Due 10 tecbnical limitatiOlll tb_ modi6Cllion. to the clllSical piclure hhe nOI been seeD in experimeuis but l hey au be ~ in limuJ.tioul. I will discu .. Ihe IlIture of the Jpinodal li1l&uJarily &JIeI the modi6catioDi 10 tbe dlllical theory impo....t by ill p_te .. ","II .. preseati", tb" numerical ~W"id"nce {or tbe presence 01 _-<:IIP ical droplets ud their modifif!d ItrUtlUre. (10:30.,m,)
(lh30 . . .. . )
Proctuin& I nel E.aluation of U"r.bi,~ Carbon Sleel anel Brass Lamilllted COlnposi l.,.· c...K.....SnI. D. R. Lesuer. K. L . Cadwell, L.twrellCe Liv~ Nllional l..abonIOf)'. LivcnrtOR:. CA 9-4S:IO, and O. D. Shc:rby, Dept. of Materials Sci(.Jla Aftd EnginetTinl. Stanford Univm.iry. Stanford, CA 94305 Metal nllllrix Wni""ted ~I<:II (MMLC) h.o..., I;ttJI mode by t..-.r pressin, aI_lina: byers of ullnhip carboo steel (1.I%C) and brass in III iDen PI atmosph=. The uhnltigh carbon mel was ~ by hot and warm
wortin,
w polduce a fi"'l!"Iin microa1JUClure that was ",pe.plaslic Aftd the cartridl(. tnsl(nominally70Ql·30Zn) .... as proc:waI fmm a
EnerlY
·W"'" perf..-mc:d under the ,""spices of tile U.S. 1lepanmefI, of by the L.twrence Uverrro;n Nl tional Laboramry undc:roonuact No. W·140 ·ENG,48.
ATOM IST IC STUDIES OF MARTENSITIC NUCLEATI ON: Y. Shao, Cl&J.>1I ud J .A. Rifkin , c"nter {Of Materials Simulation, Institute 01 MatenlilStiente, Unive" ily of ConnecticuI, SIO"o, CT 06269-3136.
f&.
UIi ", Moleeular Dynamics l imuilliou. and the Voter-Chen Embedded Alom Method Ni- AI potenu",., coheren t mlJteDiitic nucleation bu been ,~ sites oia Ihermal aclinlioa in an array of approximately 9000 lIoms of fJ NiAI. The Dnetnatioa ,I,ain palh Ind critical nuclealion coali&uralion has been idenlified, ."d 1M possib)e role oIlouli .... soft modes will be discUII...:J . The dynamics of Ihe atomistic procenes wiU ~ iIIuiUll.ed tbrough compute, moW"i\'O.
seen. to ocCur at
(10,0;0 •. m)
MONTE CARLO SIM ULATIONS OF MARTENSITIC NUCLEATION : Y. ~ho, f..t'. ~ ."d J.A. Rifkin, c"OICf {or Mate,i"'s Simulation, IDllitute iir Matenal. Scietll:e. Univenity of Connecticut, SIO«I, CT
06269-3136.
A rnodilied Ginlbur&- Lutd.u sirain flee etlCftp' funclional has been litted fJ H,"l to ." arbil,ary malD field. TIli. in turn has beeu u~ to studJ" .. hat connluralion. of "st rain embrya." rep._nl critical coafi&l1I:llions for mutenlilic nudeatiou . Since tM minimizalion of Ihe G--L f.ee ener&y in Ih,ee dimel>llionaJ cases il nOI amenable to analytiC solution, Monte Carlo simulationl hay" been IUed to oblain t be minimum tner&.\" confi&uruions, and to identify ulUltable mllll m." Illtes. 10 o:Iescnbe Ib" .... ponoe of
TMS Fall Meeting--3 i. bell."ld dua to dittu.ion of rllativ.ly low IObillty
01,10 •.•• 1 U",lted) APPLICAJICII OF 'DIE
DI!ImI)O) AlQIII!IlO)
10 PILlS!
~fUKA.Jl(K;,
M. I. "skea, 5Mdia ,,*,U_I Lobox.tort.. , 1.1......,ra, CA 94~~1-
""
Re<:ent .:Iv.-.c:e. In ~teu and ,tood.tlc: .0.11 haW! ~ tJ>t, rellt.He ,ialluicn of phil.., t.--IonnIti .... u tJ>t, atcaic 1......1 poII.ibl.. nu. ulk will brleny revl .... tho! 8Ibedded At. . Method (lAM), ,lIIO<:tur~, teeennru;tlon, phllse tt_fo ..... UOf\S, and ..,gregatlcn .,tli be present~ and COIOpIIr~ to expe.~t. hoe edc:uhtlONl 11111 be extflndeel to Int~"",1 in terfaces. The e~lu will 1.-..:100.. t""",,"ra tW"e eCCectl In • IlUlllber of fCA> ... taia. haul •• or edc:ulati.".. of the lOUd/liquid phoose Ir ...... fotllll'lU cn ..HI be ahQo.n t o be In r e _ able .gretimel\t .,1th upedllll!$'lt. '1h1l work ~ted by U.S.rot: Contr..,t /l£-ACX)I,-76Df1OO"189
.r.,
.....,f..,..
DEFECTS, STRUCTURE AND TRANSPORT TMS General Abstract Session Monday, A,M. October 21, 1991
Room: 206 Cincinnati Convention Center
~sion ClulintUJn: Michael Stevens, NMT -5, MS E506, Los Alamos National Laboratory, Los Alamos, NM 87545 (. ,)0 •••• ' NEW FEA1\IRE Of LArna:;: Dl$TORnQN A1t0lJp.,'D POINT DEFOCI"S IN METALS : David VIII, 0epGtmcnI dMAaWs Sc>enoc and Mlncnd ~ncerinc. Uni\'mity of Califomi .. Bcrt~y, C\ 94710.
AI disIanoet: ~I the nn~ of imenIoric fon:e J tI.de lattice diJP'....,....nllli II'OIIIId poinl dcf_ PlI.y be dexribod in I ccnlinuu: ~ approximaOoR ( Eshclby). But in metals the ;,,!el&IOmi<: """-bast and impurity ·boIl inla'lC!ioou _ \01:1,: ~ Clnel and hive Friedel osciUa6cn .. For litis ru_ lin uyn'IpIOIe of atOIn>C displtamenlJ; i.1hown 10 have an oscilLalinCICl'ltl Of IimiW fom! ill -.:Iditicn 10
h,l1u. bubbl .....hic:h to . . . .t 10.... r t ••p.r.tur•• a. a c;ompetl tlvI proca ss to outga, " i"'l Of ato.ic h.liu,.
LOll T[IIP(Il.I.TUR[ VOlIIIE OIHIJSICII Of liMe: III AlUMINIUM, S. Var.cllujln uKI R,A , {ournelll, Dept. of lleth . 1 Ind. £"9r. Mll"
""""J1
(9 ,~0
a ••. )
EFFECTS OF NONLINEAR DII'ft)S10N ON DlFFRAcnON FROM MULTYLAYERS. E.S.K. Menon and D de EsWlajDC, o.p'. of Mat. rial. Science and Mint;",j Engineerin,. Uni"erlily of California, Berkl:~y, CA 94720. The evolution of the conrentnotion profikl in a onc-
_li_
Thil ... OI'Ic ...n supported by I .(font from lhe NSF.
ulUll COIIlinuum~. It pves I sil"iflcant contribution 10 1OIIl.tQmic
disoIaoeDICIIIS, especial!)' f« substiruPoniJ ddco;lIlt.d in metals willi cylindrical or hit Fami surfllCe. For hip S)'mItICII')' diJecdcns In crysuil OICilJlIiIIJ
-=aaenn,
displacements_ Icn~ ~aistcnce r;I OIciillcinC oomponents ut ~ disfll.ooecDelltllllo.ild produa: ancmaIiQ in dillbse . ·ray and 1leU1IOII from U>$I~ IOtlcI duO
ImE\tMETAWC U. YER GROWTH IN WE IRIDIUM.MOLYBDENUM
SYSTEM,· E It OhOp.. and E. P. Ga:qe, Meuolland Ccnmio Div~. Oak Rid,e N.tion•.! LabontOl')'. P.O. 801 2008, Oak RidCC, -rn 371131
,row1h
Intermcllll ic layer between molybdenum and.n iridiLitn alloy (1r· 0.3 .... t % W-O.OO6 IIOdtani$m (Of the l"OW,h of the ... iJnenno,alli<: 10)",'" in (oxyCC....:ontarni .... ted) "'CO"- There was JIO indieltion r;I molybdenum tnn$pOII dt_p the iridium alloy gain boo.Iltdariu in a d _ of the inlll1'ntlAllic: layer inrerf*",- The II!SiSllna: of these in~!lics Ie> attack by teveraJ acids.nd Kid miluures is similar 10 tlNtl d iridiulT\. .
110 , 10 ••• . )
PHASE RELATIONS HIPS AND STABILmES IN THE Nb·C, AND THE Nb-C,.Tj SYSTEMS, P J DtOlN IIId I. H. l'erepelko, Univ. of W'$COII';n ·M.adilOn, Dept. 0I~. Sci . .. Ena;., MIildiIOlt, WI S3706 USA.
w
The pIwe Rl.iltlonships semi/ilia have been cletenninecl in lhe NlI-Cr and the Nb-Cr·"J'i I}'II ...... In!be NtK:r .ylWn, !he mu/u from a series 01 lIIicro4lJUClura/ ,nvesliprionl. ileal I~IS, diffno;tion lIudia and f;OmllO'iliona/ an.alylCl providt a basi. 10 modify the previoualy reponod solobiJity limits and lilt phI~ bouftdaries. Mormvc:r, laltice plra_len uve been dt:tenninecl u a funeUon of c:ompolition for the ~ and CIS Laves phuu, For the cubic C., LavCl """" the abrupt tba/lCe in tile COIIIlIO'ihOfl dependence of lhe lattice parameter AlUesu a d;ff~· all defo::t 1h'lICIu,e On either side of the stoid1iometric a>lllposi UOfI in the intermetall ic pJwe r",ld. In !he Nb·CT·Ti Iystem, the pha~ fOf maliOfl and solubility limilJ ... ere eVlh.lltod al IQ(X) ' C throu,b Ibe study o f • lri. junt;tion lentil)' diffusion coople consistinc of pure c:ompon.enl elemenlS. Tltl, methodololY permilted C\'aluatioo of a broad ~Ie of phase develop· menl In the lef~ is
.·n,
CIO ,)o •••• 1
°Rucan:h tpcnl
No. 06-ACDS-I4OIUI400. Apubiilb .. ...,.cot- tho poobIi*'d. bat ol1hito _,botioa, '" oIIow ocbotJ to do .... lot U.S. ~.....,....-
(9 , 10 •••• ) .I W~IC'
or
HILIUM
OUTGAI ' I NG
rlOM
rcC - 8~AIILI 1ID
r LUTOHU.lM, J,nie. C. Klecer ,nd .1..... R. Cos t, AII,OI Hation.l Labor.tory, Lo5 Al.~oo, NH 17545 .
Lo"
R..,ent 'I'D! .tudi". on an '
2. , ..
PROCESSING PARAMETER COJ'I,jTI:OL IN I.J\$Elt OJ,DOfNG OF N'·AI BRONZE ON AI AU.QY M))), t..Uu ol J. MAtrnder, Aided MataWI PfocesIinc 1..al:oo:lnImy, Deplnment d Medwtical and Industrial EnPncerin,. Univcnily oIl1linoi,at UItIutI<1wnpailn. Un..na. n. 61801.
u....
Laser cladclinC il a pro::ess when: I mwn of ~ il injected into .. laser· lIC'""",,oed melt pool to f""" a T'lpidly ooI.idif1Od 'lad Loy ... widt rninirnmn dilulion. Good luercladdinJ isehanaerizcd b)' COOd fusion bend . minimum dUu1ion. p
PYocc"""
Convapnl beorn clCCIron lliffrxtion (CUED) and telectcd lrU diffraction (SAD) ICChniq..eo .,.,..,., used to $Iudylla. cryllal ~ olllWlCns:i1C formed in th& lucrdod 0Ibn;m"' <)n AI "loy. CUED ~thal d!eJtrUcNre hu the
4-TMS Fall Meeting 3m s}'ft'metty. CrySl&l JINC~ malysq by SAO showed lIIal manenlile has ~ clolcd padcd 1IIrUCI..... wi'" difftm>1 SIaCti", Mkr. A ayuaI sauceure anaIy$i1 ~IIK btsed. 011 the heul\lllll \UUI o;d!_ cS1ablisbco:l1ll Kklltify 1M Slackin, order. The an.olyois st.cr.od cIW !he SbCki"l
(9,OG a.LII.)
ALUWDlUW
BASED
UETALUC
GLASSES
2:
MECHANICAL
PIlOPERTlE$: ~', O.J . Shiflet', Y. Be> IIId S .J. PDOIl' IDep.o'lmeat of Mllerial. sa ... u, 'DeplLllment of PbyJitJ, Uai~.Jill
J
V;'a;iail, ChllioUel>,lle, Vir"Di, 22903
Alll--UliaUllL hued melalUc a:J- wee found to ,enerally blve mud! bia;ber tenJite Itrena;tbl Ibu IHir ay$IaJ.li1le 1\I.Ie.. Tbe !:rac1me mode for m~ of Ih_ metaJ.lic a;\&aeI it dlLCtile ud locaIiUJd plulic deformalioa DCCUrt Dt!U the arilip. MechaDical propertlel of partially c'1ICa1Uzed metallic &1- were aI.., Iludi.,d. Tk cenaile ItleDKch .... d ductllilY wu PlIinlained tven after partial tr)'St&llillliov, and ia ",me cateI the I~MjJe tlTe"&lb -.ru eYeD failed. Detailed exa.miutio. wu foculed DB I p&rlicall1 alloy: AlHFe,Gd .. Bl emploJina; Hi,h ReioIucioIL Electro. Microleope, Ibe iaCer&dio. het_ wp llepIlild 1i1L1 aYllalli1Ll! putida wu IllIdied ud lbe role of lheie lia), aydalliue puticl... ilL tbe overall deformllio. ollbe a:JUly m.arix alloy wiD be dileCLlud . t9,)0 . .... )
Ch.nq".
T.xtur. Durinq SII~rpla.tic o.fortOation of M..:hanlc.lly Alloy. d AI_I.n,.. lN~0211 .z..I..n..Ztht., Tho ..... R. ai. l.r, o.part•• nt ot K" tallur"9Y, M.chlnics and M.t.ri"l. Sci. "e.. , Michiqan Stat. Univ.rllity, I!a .. t Lansl.nq, I'll ~8824-1226
tU:}O •.• . J
DEVIATIONS fROM IDEAt. DECAGONAL SYMMETRY EXHIBITED BY THE ~DECAGONAL~ QUASICRVSTAt.t.lNE PHASE IN lHE AI.CU·Co AI.l.OY SYSTEM.
A S Ramapi E. It. Rym and P. R. Howell, Dept. of M,tuials Science and
EnJinecrinJ> ~ylvaniaSCllCoe Universicy. Univenlcy PuI<. PA 16802.
TnnsmiJsion eleccron microscopo sllM!;es of !he MdeaoE"l\lr qUuic:rysIIlJiBC p'-<: in !he AI..(:u..co .1I0~ . ysccm have reveoIed 1WD characw'lStic ~ of this phase wlUch have COfIWcnblc bwinJ 011 an W>CImWldina: of the III~ of lIIis ptwe (I) The oco;wrence of. lattice of main rdlcccions in Kla:ced I r q djffnclion pIoClCmS (SADPa) II!OOI'dcd fl1llll thU: phase. (2) o.viatians I'rorn ideal docagonaI s}'ft'metty and subtle vari&~""' lI1IDIII wlrioul SADPs obuint4 from diffuell1 lilllie ''cJ)'uaIJ'' of chc: _ ph...,. These ~viWons omu as
shifu of !he weak
",noctio," rrom ideal dccqonal pot.itions.
Aloa various
djff~nl SAOl'$. 1'beK experimencal fEes I>M: ~ us IO~ chcq~ne ~of the ~dcc.llOllal~ pIwe in chc CVt1lexf of the wc.Il·swdlcd class 01 phasn known .. incOlYlflll:...unte p/wc.I ""1IidI also '-'It tlrr!:e4imensionall&ttice periaclicicy. The plwon
sO'UCNJeS of ....at inlenlicy ...., observed 011 the
symmetry.
Th. t " xtur. at "xtrud. d and hot rolled llll90211 i s chlract. riB'" dllrinq . up"rp1.s tic d.fontation. tN. to th. tapered protil e of the fractured .p.cl ...n, chang." i n texture at various "trlins wer" obtained in a .inqle .p.ci,,,-,,,,. TtL" ",•• ult_ fro. a .peei." n d." tOnted at 425'C, l / ."c, "hOV that the co.ponent. ot alpha tiber texture d.iBappe|
A .cohlnioally a llo,a~ A1-1I all oy h aa b •• o d e Hlop ed a . a n in, • ••• di., . t • • p ~ . atu re (upto . bout 500'P o. 2f1U ' G) a. ro a pace IIH • • l . l . Althou . h nwud product for • • a rc pllnned , 1n1< lAl a otlvl
D~OPMENTSINADVANCED
AEROSPACE MATERIALS I,
(lo:JO . . ... )
Aluminum-based Materials Sponsored Uy lhe TMS Non-Ferrous Mewls CommiUu
CONSTANT ... MPLmJDE AND SlNall SPDCEOVER1.OAD F....TIGUE
Monday, A.M. October 21, 1991
The room ternpcn.N'" II~pe hchaviDr of 8009 WI5 sllldied CIVCJ • wide ...,'" of M<: 1110.. and hill! R. Foril"" end< TlfU wen: filii served in TM alloy .. Ek:vala:l ~ IC1!inl n:vtalll pronounced 11t:q\JalC)' dl'ect II Iem~ above 13O"C aod bK levels> S.5 MP"m1/1 (K.... . 6.1 MPt.m1l1). Hardness
Room: 211 Ci.ncinnati Convention Center
Session CJurimum: J. Andrew Walker, Advanced Composite Materials Corporation,
1525 S. Buncombe Road, Greer, SC 29651-9208
era"""
en.
...,...y
meawn:rnmlS ffIl(\e lfIerexp<>!olR II (blled \!I:mper1Ltwes indicalf: minimal or no chanle in chc mcchanicll pn:>pe"ies of lhe 800'J.
(8,30 ..... )
ALUMINUM BASED Wr:rAWC GLASSES I:
BFJ-IA VlOR OF AA 8CIB AT ROOM AND ELEVATFD'JEMPERA lURE:
.... P Bemws, N.... S.... Lln~y RcStmll Cc:mu. MS ISlE. H.~. VI\.
23665-5 23
STRUCTURE AND
PRASE TIlANSFORlfATIONS: Le.bea', Y. He', G.J . ShiOet'lDd S.J. POOIL', 'Depulmeal of U.~~~. tDep.u\meat 01 PhysiCf, UlLiveraily of Vi",Di" Clt.arloltelviD~, Vir,iDiI 22903
Alumillum hued a>etallic a;lU1eI are uually made by lipid IDlidiliCitioa 1LIi,,& mell .... pi.Dillf: lecbDiques. Tiley Itue , wide " IIf:e of compofiliolUl <:OIC1&iDin, lip 1.0 90'110 aluminum. l'beJe DLllalal. ~Derally have mud!
hia;lLer , lr"",,1t IbID hia;1t 'I-stlt commercial alumialUD aIIo7ll.Dd their &ac1cue behiyior il d1lC1l1e. T1teir I"... dellSity, hip SlrfllKl1t I~ dliClillly mite Ibem potent!alIy bJdilI a4wanttd oero)lplCC! "'Ileriali. TI>e II!'\Itture 01 lbeoe metallic a;\&aeI wa-e proved co be Ifllly amorpho.,. in.1Ud of miCl'Oa7lfalline or microquuicrydalli..e. There u e leveraillart of phue Ir&lLllOmt.atiON wlLell bealia. I metallic a;lUII IImpje &om room \emper&lllre 10 iu mdli~, pOta l. The ,Iru~ure 01 lite IiBC ,\1st of U&llllonaltiOO i, Ihallial Cf1S1&lliue p.orlidei (100,,1 ,s...., am ia diameter) form bollLO&eo.mus.l, embedded in &II. &mOrplLoua DLltrix. FCLJllLer Cl'yllalli..lloa D
(11,OG .. . .. . )
DISPERSION STRENGTHENED AI·Fe-Ce BY PlASMA DEPOSITION: L M AOIl![ts. Alcoa laboralonas, Alcoa Cen1er. PA 15069. AI·F.Ce alloys 01 vacying soIl.I\' COOlents {S, 3.75 and 2.5 totalldomic % Fe+Ce) al'ld FaICa ratios {2. 0.4 and 0.08 wl.%IWt.%) have been
tabricatad by plasma sptOying 01 oas Idomized powtlalS al'ld subsequent rolling. The ~asma $pIlIylt\(I ~~M pIOvidc!ls the rapid $OIidlfiCation rates nacessaty 10 intnxkJca high volume IC8CIions of fine strengtllanlng di$persold$. ConveL'llionalllo1 rolling then doses polOSity and introclK:e$ substructure. Th"SlI mal"riats exhibit room temperature tens~e. el&Valld lemperalure tensile and cree~ properties oomparable Ie tl'lose obtained In materials made by oonven1ionat powder metatturgy methods. Decreasing lhe soIu1e lavlll from 510 2.5 alomic pilmilllf 0kI1'IO! slgrwticantfy rWuc& the S\feDglll8ning potential 01 the A!·Fe-Ce atloy$. FWlharCTlOC'e. hllrdnoss measurements 011 as spmyad samples and samples agad al 45O"F suggest that some age hafdaning can be actclllled In 68\1erat compos/liotll.
TMS Fall Meeting-5 (11,)0 •••• ) S1ZCT_ UAM If&LJlllOI; or ALlIMlt
t._.
of ..,. ai. cu l t ,olIO)' &.090 l"I-U-C'I>-iIgIn H U _ tl>.ic ....... . l ..... tu.si..,. u.'", th. eloo:::ti'On _ ... l.d~ tecllnlq11e. 1090 _to """I.DH " rtr0l'l9 ...,1:004 .... nu.e ..tl1cll conatd.erAI:Ily lnHuanee 1. a t_ • , ,,,,,,U,,,, of otl... U.U"" . C>
t'"
t""
ENVIRONMENTAL EFFECTS I
SIr"1 -",sian aldllng iSCC) Ind """",Ion tllig;ul (C~) bIhI'-ior at AI·blnd '110,1 ...... btln a.""""'" I luditd ..., lIOCU .... nIId but not mUCh io known IboUI 1111 I nvlronmental Ilnlillol If.cIUf. blh lvlor at Ifta p,IIf ticul~1t r.lntofClOd AI-blnd .... taI m,tt« OCWI!PQtit•• {N r.te.I. C,,1IIIie r _ ..... m. h... """ _ 10 _ ...... - . . ~ boll ... ~..., ...",.., .... -.vb 01 1/1. tIlI" q 11Ioy. In IIIlI IIUdr Ih. I ~ al dOnlr..,1 he,1 ....,.,,_ on lhe ."..."'.......1181 IOnl~"'. ' ,acM. --..10< 01 .../-t..""'" 70.. '''II b .. _In particulat. r.mlorotd t!I:Jc c:ompooNH hi . . be'" . 'l lu.ltd. 11111 .Ittcl a ' p,IIrtif;ull .. II.. on I I'HI coe,ollon "'_ IIIllIIItlo" ..., growth wll ,Iso II""'"". A psopo..d m""'anllm 10, Lhe . Hocts ot h•• , tr.O"Mnt on e,ack Initilliion and orowdl In A ~_ M!.ICI oriI Iko bI dIs/;>.J$Md.
"*'" ....
l" ~" .... l
ElKltoChlmleat Studl. . E.... tu.Ung Ph01lpftoru• •lId Sullur Effect. Oil ,Itt OI. .oI ullOll 01 Iron Ind Nickel. T f Sor.o WelhinolOll SII\t 1.II'Wtfdy. Richllnc:t, WA: e . W. Atty. C. F. Wlf1disdl. Jr. lAd S . M. " III"""''', Pacllc Ho
TMS Cenem l Abslract Session
oI~.-cI
phO$phONIlnd
...".,.. 011 Inlergrano.rt. (10) corrosion and littoN _Ion aJdlIng
Iron·and nickel·bf.H aIIoyl Ifa btinO a •• mined. Mltal lI*""'nl hlY. bien ImpIanItcI witf1 hICIh llvelt 01 ImpurttIQ
(SCC) 01
Room: 300 Cincinnali Convention Cenler
M~nday, A.M. October 21, 1991
Session ChJDmum: Howard Sizek, MSf-5, MS K762, Los Alamos Nationa1 Laboratory, Los Alamos, NM 87545
~~
.. lUll
..-oattcl .. grain bDuIIdIrItI and \hili ....,..,.
o;totmIeaI ItspOMt III MIecItcI ooooaIvt enWoftntII!I m........s. Cu"'" flsporIIH durtnO initial diuotutIon IIIYe bten rnapptclill ~1Ii ..-.d ..... tcI ~ ICI ImpufIty _elionf. RHuIls wit bI chcuIItcI rtla\lll... IG dil;1IOIutI<>n and sec aid< I/IOWIh rll...
WorI< It oupporItCI b'l lhl 0Iftee 0I1IIIle ErIIIOY Sciencta. u .S.
OtpItimtnlot EntIO'f undtt oontrld DE·ACOI1-76RlO 1830. (lO , I O •• • . J
18,)0 •••. )
SIMULATION OF HYDROOEN DIFl'1JSION CONTROI.JB) CRACK GROW1ll: S~icocc
48109.
Ind
W H YIn, and D. I. SroiovilZ, De",.of Mlretiall EIII ..
Ulli"crsity of Mie bl,,,", Ann Arbor, MI
A COMPARISON OF11iE 5T1I.ESS CORROSION ClACKING BEliAVlOR OF
CONVENTIONAL AI'o'D COBALT FR£S MARAGINO STEElS. f...BJ.IaI:l:I and Pew S. Kulkn, Mlteriall ChUlCicriJ.lPOII Cent .... Cam~&ie Mellon R~K~h Itlltitu!~ ond W.M. Garrison, Jr .. Ocponmertt 01 MeuJlurpc&1 EnP-rinl Ind
MIIc:riall Scleoce. Carnc,;c Mellon Univmity. Pillllu&h. PA I S21) .
lbe erf"1 of bydro,cn diffu lioll Oil lub·clili.::.1 CflCk arowth ;1 modelled in lerml within Ihe framework of I ncw ellSl;c t imuillion proc edure which Iccollatl for crick propl , ltion , Slreu en hlnc ed bydrolca diffulion IDd hydro,ea embrill.lemenl. The Gliffilh enulY it I ll umed 10 be lillCltly proportion.a l 10 the bydro,en coacealnlioo It ibc cl'Kk lip. We Cltamine crack vowlh rltel in I pre-c:ncll:cd specimen U I functioll of loadinl, lIydrolcn dif(ul ivily Ind bulk hydro,e ll concentrllion.
The resllllnOe ID IUCII eorTOSion cno::kinl (seq in a q _ lohttian COIIIIininl 3.S'Io NICI hiS bc:en innltilltcd for II~ manlinl nee!, and I low ')10)0 Ilffl, 06AC. The alloys ~ Ih..,e eannntiorlll mtrIJinl Sledl (000, OS!) . ftC! C3OO) and three cobalt free man&in, ItCCII Tl$() ond TlOO). The ...-pribility at the .nay. 10 sec wu q..... tircod by _ _ ~ts of Kuec wi.., OOIISWII diopacancN leal ainl ...... blc c:ancilncr beam 1pCCimo:n.. The "'$11111 irv1lc.1e WI all of the ttWlpoC Sltell e.rIcept for the nso.nd noo r;ndcI wen: more ..,linant to s ec thin D6AC.nd th.1 I . a &ivcn Iln:nllll \ev.l the cobJ,h bearin& mantlinll\eCli M~ mote ruUtant ID sse thin the cobaIl fn:c mIltIain, steell. This work. w U IIJPIlorICd by Tcledync.vu;o SI«I Comptoy.
mOO.
110,)0 •••. )
le,so •.•. )
HIGH TEMPERATURE CO RROSiON OF ENGINEERING ALLOY5 IN BROMINE· CONTAINING GAS MIXT UR ES : BUJenl ONAY . od
HiOh entroy·high rale con50lidation utilizing • ten mllllaJoule
homopolar generator is used to manufactu re graphita/COJlP't metal mat~J( compoailes. The corrosion belwlYlor 01 1.2, 5, 15. 25. and 40 volume pe rcenl grapMe/copper melal matrix composite, is studied in alrated end deaeraled 3.5 welghl pe rclnt NaCI so lullons using electrochemical technlquel. Pure copper III ......a' . . the relerenee matenat Thl goal ollhis researel1 is 10 Wlderstand the compRcatlld ime radions between the corrosion belwlYiOr of Ihe copper, the graphihl . and It!I coppet-graphite interface .5inoe galvlnic coup~ng wlthln thl malena! andIor cifferemilCleration cells due to &truchlrai llew. s.ueh u crevices or pores can r'suH In increased localized corrosion rates . Scanning IltK:tlOn microscopy. energy dlspe~IYII spectlO$COpy. a nd x· ray dillractlon tochniqucs ,r' used to chlrl ctlnu 1111 COlrosion pI'OCIISSH, morphologies. and microstructu ....
YIIUItUJ\J SA ITO. Re search L,bortlOt'y ( or Nuallr R~.cton. TolI:yo Inltitute 0( T ~lInoJoay. 2- 12- 1. Oak.YIIIII. MCiuro, To k yo I ~2, japan. A elle od",1 proc:.l1 ulina ,"eoul Br 2' Hllr ,nd H2 0 bll bHn proposed recently for produdnl 02 Ind H2 rrOID
.... Ier . Consequently. " l e Jeareb prOj"t hili been injtil~d in tbe IUlbocs' Ilboritory to lIudy tbe corrollotl beblvi« at COCIIICIII Oti I'l\&ioll, ll\& IlIoYI It te.perlt llr.. bll .... IIIIO ~ OO IDtI 1000 I: io anvirODlDeDu COIItl illinl thell! .p«!e••mOl rorr oaioD dltl for luch ryllelDl ar. Karce in thl' literature. In tbi. piper. the ru ullt d tbe ronollon I U U QOnductetl o n AI 20 ) · ro rmer Fe· .ad Ni - b .., aUoYI Irl pruen\td .nd d iscusse d. (10:50 • .• • ) APPLICATION OF KIMIIf.N ENERCY FOIIt'U.LISK FOR CItI.CX INITIATION ""0 DERIV"TION OF A C£HERAUZED OOFFlN·IWlSON W , G. Venhtn_.
19 ,10 •••. ' nil!: INnuENC E OF M1CROS'l'RUCT1.JRE ON 1llE l~CRANUu.R
STRESSCORROSION CRAClUNC Of' Al-U All.O'tS: A K v8l!g\ty;In " .:Id R. E. try. Nattonallnat ll"te ~SllnoSanS. """ nctInoIcIO. Galthe........ M'O 20899.
""In
lb. lnIlurnce oIlht "",tera and llIe !lite dWll11;1"lIon ot the boundary sm<:lpttalo ph.te AW (6) on the tntorgranutar II~ COrn:.lon cr.cklni ~ha""r ot oluRUnum .l10)010 conlolntrrc lithium _ """,ualec! 111 "'Ind\'ct1ll.l1llOW" Ilra1n 1'1110 ~. on MII1(IIu 01 ~ IIJ&h purity A1·U bIrwy anc.,. For thac ~IIU. u...uo,. __ heM uutflt undtT .,.."fully cot\I",1le<\ <:0IIII11_ deI.IgrIood to mllllmloe Iht dlfJcrencn bet ..... n
ShIll DenlopllClnt Co •• Houston, Tl 712st; Y.W. 0.""1. Dept . of MaUrials Schllee I En,llle.,1n. Mel T. Jolon , DepL of Civil EIIlinlulna, Northwfl tem ~hl .. lty . hlllitOll, IL 60201 . (.\blt....et aPPlo .. 1ft t he MclftIda Enlu po.n)
FUNDAMENTALS OF CRYSTALLOGRAPHY: A TUTORIAL I Spcntsond by ASM-MSD Strudllres Commillee
the ""trll< ,,*,",*ltuC1u", Ind )'kid 1I",,,,,h while produclnl altInlflcanlly dlff.n:nt gnIln boundary pre<:lplllle""", dtstrlbullOtIS. Th. ,1'II1n boundary nucroetruc:(u", was quanutlc:d by Iransm1»1On . lec:I",n ~..,.,a"" . The
Monday, A.M. OctObN 21, 1991
19,)0 •••. ,
4401 Dayton-Xenia Rd., Dayton, OH 45432-1894
_ults of Ih_ stuc1Jc. and !he .1Ioys II dlleuUod.
..,Iev.""" to the prod""""" of sec . . - -
ENVlRClNMENT AI.. SENSITIVE FFW:TlAE CI' AJ..8ASED M:TAL IMTRl)( COMPOSITES e.JL.:liD;lb. J J Lew_I. DtparIm"'l 01 "'11.,l1li Scionc. and E"II"'"nno. c.s. W"lI
Room:2U7 Cincinnati Convention Center
Session ChRimum: A. C. Jackson, UES, Inc., (8 '30 ..... ) r UND""ENTALS or C R YS T~ SYST£MS: W Soft. . Unlver.ity of Pl tellbu rqh. Pi t t .burgh. P... 152'2.
6-TMS Fall Meeting The princ i ple. upon which c cy .~ .l st ru Cture. a~. undeutood will be p=" ,."ted a. an overvle .. and rev Ie .. tor tho . . ..ho.e r"'IOA r ch and d.v.lo_nt n."d. requi>e "nder st.ndlng or crYlt.lloq r Aphy .nd crystal
(' :30 •. m.) COMP UTER SIMU LATION OF POWDER PACKING Chug-Wei Shih .... d Jameo C. M. Li. Materiall Scit ncc P""ram. Ot-pl. of Mecb .... ical EosinecrillJl, Ulli .... nily 01 RodInter. Roches\«. NY 1~627
• .... )
.....
IlRE.\J1;
)
TRY: :~:~~::;~~,o~r PlSrl'.M£ ttsbu r'l'h,
j:~~l!~:~;;:~:t"~'~'l'j:l':n
!O~,,'~'~!!~'""""""
P'>' 15213
An overvl . .. and review of point crrUAll"9uphy root .ed .. ill In the and Internati onel.n .yllbol be t he f undaaenUh o f I y _ t ry and
It,50 •.•• )
TMS General Abstrlld Session Monday, A.M. October 21, 1991
or
or
A. ~IC>.L NDEL "l1!E IEJIEB IQI&..QIA.I/i" EnNlMY a::tIt'1Cr ruRlr.:l SINIaUN:;: Y. Liu and 8. R. Patter.."
Room: 201 Cincinnati Convention Center
Session Chairman: Shuh-Rong Chen, CM-CMS, MS K76S, Los Alamos Natio nal Laborato ry, Los Alamos, NM 87545
'.,lO •.•. ) A HIGII S Utll VIDEO DUCllII'TIOII o r HlCII.UtlCloL It ILL "'C III M Al"TliTOa , L b.IU.o. o. 1I... r le.. H . II . C. V.dl.y . • nd T . M. eo .. n ... y. Do p.. ~_nt of I'lau rl.h Sc l e""e 6 E,,£I -
..... 1"'. 22fOl.
A COII\9Uln pf"D&Iam has been nlablilhed 10 Jimulale random denx p&(:kin, . Wilh apr_ fracl;",,&! denli ty 01 O.~. Ihil pr"!u.m r.... domly "",. eraled i~I;c&l inlerpenelralillJllphern in •
lA"liver' ity of ~ at ~, UA.fl Station. IlinniJ"o:]ham, A..latwr.
~
3529( .
de
R, .... ~ experimentally
verifl.ed u a ocnrtant d'.>:"inq fi ....1 ltage or .L~~L"l9 in Alp]. By illoesti900ti.." !;he evolutla. of IliQwt.z"\lC."tw"ll ~ IUCh . . ers of pons pe~ qrain and
thI 1oc>.tiona of pores dud..." the ai nterizlg proceas, a aterft> loqical 1IIDSe1 bMcd on tetr~l 'Fain stna:t:ure .... prq10Hd in \ottId! t;he pre/licta:l R it r.irl~ cIcse tQ the ~i _ _ lIr deur.ina:l vat ... _ A<>o.lysi. cL the .uri OOIplainll the ~ 0CfIIIt.ancy of the dIIg-.- of ~ bnonSazy ta<:t r--ovi_ " bettcoe under.otanding of poroe-gr...in tu..odoory interaction durJ.ng sinteri.." pn:qiM.
TIle \lnl ...... lty of Vl r,lnl •. Chariotunill •. VA
1I0'IO •.• . !
KI,h .poed vlho foot.,. of thiO In teraction bH.... n
,<1n"ln, . . dl, In .n . . tdtor will b. p .... ntod. M"chnlnl .U lln, In both co..... ht horhontot b.U all b .nd labo .. to r y . .. ritor. . .y b. eh.... teriud by • .IKtuu of • • dlil. rollins .nd .ollioion . nnt •. til . _ch.nlcl of th . .. ''''. nU .n ducrlbd . •nd their nt.t lv. r r'q"" ""I .. Iro 6oUrwl ""d vi. the hi", .pe.d v l600 technique (KSVT ). Ie b .1K>wn that th. . . . . . ... 11 eo tltt ,._trlc.1 ......,.... nt of the b.II •• okpe"
b, IlA&tA ·IIAS.\.
(1,)0 0 ••. )
Al
CARIItDl!: f'
FCWlOI ~ o:I4'05ITflS II, II.... , Z. !':l Ie,..,... And. C. Pantel. ""'ter isl. Science and ~ 1 _lng . 1A"l1.. . or ......... at ..... t ln. _Un. TX 78712 J. o..lly ard R. eames. Cetter fex !I.~I~, _tin. TI( ~,
~ap.lte portieut... oooopoeitee .... . - •• e ltc:t.ri.,. l t.KU in ~. lI1~t IIR>lie&ti..... 0... ~i"'J -.od ... ..,.,.. t:ht parf~ o f u ~ !ta it inc::rea8ing the b::ncI ~ ~ the 9"".opUta ~rt lcl. _ """""'" . . uix by f...unq I Ulin oartol
1M.. ICrl. i.. ~ It90-t l ~..,t.
tot ........
AdYancecl 'tW:Iw)lO
Vir,lnl •• Ch.. tottuVIII •• VA 2290l .
Th. hi,h .pud .. Ideo obauvetlono '" H . . hor . ll1lnl pe ..1t q... ndfleatlon of tho r.lotlve occ~rra ..... of b.ll.
bdl coli hl on vo. b.lI-b.ll rollin, .... nu . Mouov.r. by .... Inl bdlo .. lt h color In,. tho kl ..... lea o f b. ll .hln, con be d. . trlbed . n ... lly . . . loctod .~p. rl_nto .. I . h .... 1 --""n .6dood to the .111 lokntl!y the .. , 10,," of tho .111 t . .. hlch t he po .. der prohnnthlly .. " 11 o f the .bovo chauctarr-cln of . lllInl. .. hlch con "" ._lq".n~ lt.nlv. ly duerlb.d .. ltJ. .bo ,Id of ~ I,h .poed .. 1<100. In f"""tlo"" of .UI , •• _ t. . . .""" .. • 111 Ipe od . Su".. clon. o f th ... ..... tu . . th.y apply to . .ch.nl .. 1 .lIoyln, . . p. ( lIAItop. ) .. til b. cOnoIde r.d. Thh .... rlr. " " 'unor tod by DoU''''IIASA.
,ro-
"t...
19110 •••. ) TII~ KiNltles ALLOYI~C :
01 FRACTURE "~D COl.O II!LD I MC DtlIIIlIC It£Cl!AlilCAL Cc~rtn.y. D.p.rt •• nt of Unl .... oIty of VI.,l nh.
L .l.... L 6.l..IiJJI ond T. N. "'t .. ldl S.I.nco .nd hslnoedns. CIIa.lott .... lllo. Vo. U90l.
,,"chonleol .lloyh>& (M) h • "",,IIn I _ lor prod""l". , vod " r or ""'"PO' I . . . . lloy .nd . -r p/>Wd.ro b)r r. peetH 10'1"•• <1_. c_Io •••"", .nd fro •• u . . of pow<:c trln.ltlon _ .. to (Cr. F• • nd "b ) hevl,,£ dllhr.n t ..e .... nlul .nd I~rf.~ • • hore.torlotl.l . Fr.ct~r • • nd co. l uc onco fnquonel .. d. .. ul n.d uperl .. n.dly .n cor re lated with ."arl.1 p.oporU . . .nd alll por....... . thl. work .... OUPPOrlM b)r tho Ar*)' ko . . . roh Offlc •.
,,,CU.,, .. •
"'te ••
(1 0,)0
4 . , ,)
MI CROStRUC TURAL CONTROl AND T£NS Il( PROPERTIES OF NITROGE~ COIITAINI NG VACUUM.>.TOMIZ[(l AllOY 5!1O: \.. [. fUChS Ind S. Z. Milydeft, Gfnf.,l nectdc COOOp.ny. P.O. 80. 1012. Schinect.d, . MY Il30I.101l
Allor '!IO (A59O) h.. been propoud br ~neril .~thnr~ as ".ub_ SlIt~tt I!lterh! for Alloy 600 (AWO) for n.u: SI!fIeraur '.;l ll . eltlOfti. O~f 10 the i.-prOyed sec reshh"ce or A690. In nrelff to KMevt tft. de\lr~ .l crostru~lur. t or sec reslsliftCf In "690 , M", I~"hre snlut lon .nnullng I rU l teflU i re r fqul red • Althougll Slrl~1 tont r nl of c",""nslUon.nd proceSSing is used, ultftSlve gril . growth Is obser"fd In A690 dur ing t he h1g~ tMIlernure bpo,ures. No" ewer, pOWder IIf t .11uTgr proc essing I nd the l110ylng ilddllion of nitrogen 10 A690 r esul lfd In hoproud gr.ln grOWth con t rol and len.llt ~rop trt1" due 10 the t ormotlon Of, f ine dl s perslnn of li(C.N) preClpItHe •. So lullnn annu li ng e'l)Osures nf up to 24 hours ill 1100·' resulted In nn l , liroUe d ;.,1 . growU, ('rOIO 1J,o. 10 10 ~) Ind • ~I 19ftl reduClinn In r OOm tMIlernure yield strengt n ( frOll! 585 ~I In S2S "Pi). 110,)0 •.•• )
CIOmI PA"nI: DMUlP£ II.'N.YSIS ~ OS"I'W.D RlPem~ IIi
If-I'NI_6,., !.:...!!!!!I:. R1W. ""ge.... .....,........ 72757 and B.R. ""tten",n, I.hl.venity of A..labomo ot lli.r.inghon. UAA Stati.on, aim1nghorD • .u.m..n. 35294 .
GrCJlo'th path envetope (GPEI andyai5 hM been Imod to In_Uqott thf.: Ootwlltd ripen I"" of W particl. . In W-liNi -6r.. alloy. "nle ...... ultl.." plots of growth velocity. dr/dt, ""fSUI 1/10 ' UA>OTt tho oetIoff ..:del of dirr,..ion
TMS Fall Meeting-7 111,10 a ... . )
Low CDBt
t..
~I ti- f....,t1D1l&.l
'!bIn Fit.
I'rc>cesal~ ~r
!llm .
P. A. .. . Khan and k. ~rJee o f I'IetallllrQ. MeehnnICII and " 'terial. Sci.....,., l'lI.""i...... State lnlvenoit7 liast r..n.il\ll, foU 48824 ~ Depar~t
.. law """"t, -...Iti-f\n:UDIl&.l . hi.., .....,.... ~r WIUI ..... iar>l>d and fabrlCllud duri flll u.., oioltlDrt procetUO. It also ...... • hollow cathode Ion ..,...."." • t-t.ed aubotrate holder and • K-Y tart;.. t -nlpuI ..tor. 'Itte tot.al OOIot to b.!ild thb ~r detlUned priaaril7 for thin li la tomation au> be ... law ... SI5, 000. f"Urtherw;ore, .. Ith little .:diflClltiChll It coon _ilJo be ........ for ion ' - trut,tet'troc, ; 011 !..plantation 6nd 1011 hua .... I.ted u..,.-I VIlp:or deJ>o-ition . ",., detllan detai b and . . . o f u.., initial reaul tJo on f o.-.Ucn of thin fi t. to" .... inll thi s ehaabo:r .. ill be di~ In !.hb ~t.ation .
METAL SCIENCE OF JOINING I, JOINING FUNDAMENTALS A, Welding Sponsor~ by TMS SolidiJiClltitm and Physict21 Metallurgy Committees
Monday, A.M. October 21, 1991
Room: 200 Cincinnati Convention Center
Session Chairman: M. J. Cieslak, Physical and Joining Metallurgy Division, Sandia National Laboratories, p.o. Box 5800, Albuquerque, New Mexico 87185 ".".J
(a,JO WELD POOl. SOI.lOIFiCATION AND It ICllOSTRIICT11RES:. S Rld~.
N.tlon.ol Lo.boutory. Bid,.
O.k Rid, •• TIl
~~08.
It S · 609~.
A
David . O.k
r.o. Box 2008.
31811.609~
Solidification b~h av l"r controls the .1 . . a nd . h ap
_I
.....m• ._r" ....
o.Ao . " . . . - - . , •• "'".,,,,, . . , _ . . . . . . ' . . . .. . . . . .,
0< .... ." .
-0 •• • _ .~ . . .. "" •••• - . , . . . . " . . . . " . . ... " . " . ..........., _ . ' ' ' '
"Tho ............. ......,... baa "",",."""-1 11,-. _ _ oflho U. S. ~ ....... amr.ct
No. Dfi.A(])5.MOIUI400. AuudiD&ly. "'" U. s. Ocwerturw,,,, "'. . . a _d.;"". royaIty. _ 1 _ 10 poblioh '" ""Pf<"I- .... p"bliohod f""" O{ ..... «noibOlion, or all _ _ .. 10 to, fat U.S.~,-.-
la,S5 .. .... ) T1-lE ROLE OF M1CROSEGREOA110N ON waD SOUDIFlCATrON
. .10... equlOlled & • • 18 fo..aU"" ... n d ifficu lt, bec ...... . .n1 pouod. I .... del of e<\ul and , raiDS • • • •eoooUed . It h .... t ",uHld. at t o Iwon • 1 .... Y&l u ~ of te....,ratu .e , ~"" t u t I ..,l l~UIUldoD uloclc, (C/I). c ..... rary to . ..... uthor •• I,. addlttoD I< I . D.C. . . ...,. t o prov!'" pouot1.o1 """ l et. He"'ro,e ... "". aucl ... U .... on aK ...... plLas • • h. . ""eo .~po rt ed 100 a l tdll_ a ll",.• • l1li . tal" I .... ","is. but tot,,"r _cllanl _ _7 . 1.., occur. I .. _ _ "aU it . """u • • lLat t ·be DucI •• t!"" o ( tbe """ I U D' _y . 1. 0 to.. • lacto. In _ . ... r tbo: ~qul"" e d & . . I.u • . p pO . r. 19, . 5 . .... ) Mellin, Efficiency in Fusion Welding: P W Fllerscbbacb Physical and Join;ni MttlllluclY Divi sion 1831. Sandi. National Labora,oritS. P. O. Bo •
5800. Albuquerq .... N M 87185 .
B. sic to our knowledge of 'he science of weldini is an und,,"!andi',g of ,he meltl~s efficiency; wh ich indicaies bow much of the i>eal depo&i!ed by the weldinK P~ i. used to prodl>CC melting. Recent calorimetric studies of ,he: (ITAW. PAW. and LBW processe$ have mea • ......! tht neJ htJil inpu{1O the pan !hereby qu.an,;fying the cnc:rJY aansf.r efficiency Ind in !Urn pcnni"ing I n accunte de.ed to produce lhe same maxilnom ""'Iriftll effodency. Thi, Hmi,ini VII... win be $hown to d e l'eJy weU with the m:cn! empirical datil ond Can be used to proiet the melling efficiency simply 011 koowledge of ,he wtld schedule Ind the material ~ This work pmonncd., Sandi. Nltioda ) LabonlOrlcs supported by lIIe U.S. Deponmcn' of Enerty under Conl,...1 Number DE-AC04-16DP0078~.
now
(10,10 a ... . ) IIEUI ~ rtAL PIlASE STABII.ITY:
D L Olson .nd O.K . ~tlo~k. Cont . . for lIeldlns . nd Jolnl", Ruurch . Coloudo School of Itln • • Colden. Colo. e do 80401.
A fu<'ld.o_nt . 1 und. "'.ndln~ of v eld .etal .Icro.tructural • • • blilty Is I.port.nt In Older to optl Dlu hi", t uper.tu • • perfo ... n • • . to u l . Ct " . 1.4 hut ........" .. . . nd to . va1u.t~ th ~ Influ.nc. of tho co.pl. . thorul h hto . y In _Itiple pu ..... I .a.nts . lIeld ... t . 1a "".. en . oolldlfteatlon a .. uetu.e '11th .""po. ltlon ud OIlcro . uuetuu ,
""at
(IO,)~
. .... 1
IIOT CJi:AO:ING JI'I WEl.OS • FllNDAMENTAI..S ANDTEST METHODS: C-D..LwIdia.. MaI
"'Yi<""" and ..... primaIy"-' r",. ...wnl _
and 1'<0< r . _
""......i...ion
of """..... sm. oro diot • ....t from !he 1WIdpoin, of f ........ dir
AND PERFORMAN~JobQ A Brooks Sandia Na,ional Labol1llories. P.O. Bo. 969. livenoorc. CA. 94551·(1%9
C>W\AC'I'ER!ZATtO'U, R. '!\oo""ao •• the un 1v . of Alab"",. . . t ah",ln9h...,. school of &n9r .• t;lept . o! M.. n . Sc i. , &rlgr., BinolnghllJl • • ,. l~194 .
no. partilioninl ofalloyini tlemen" and impuriti~ h:'W«d !he solid and
Hany ..... ltj.·p'ue alloY. 're Subj ected to r apid ther ... ! proc:... in'l" t.cl\nlquU auch as -...ld1n9 • • ur r . . .. l><>CI ihcaUQn thTO\I1. ce ~ u.i"'l t~ ~ npid hUtlng cycl. i. the dl n olution of _ cond- ph.se p.utic1 u and the fo.,...Uon of .. _ unable liquid .. t~. pUCipiUU · .... tu qu.nt cO!Opuur .i ... Jation t ec hniquu for tho .. icrostructurd eVOlution dutlng the heaUnq and cooling cycles. Techn i ques fOr "pod_nUl verlfl_ """on of the _ a l col..,1oU"". "ill 0.100 be p.es.nted. 1'!>. 101>CJ unq. 90 .. 1 of th h r .... r eh is to jlrOdueo .. ce'.'p
liquid dwioi "",Id soIidiflC.lUon can gtWly afftct the m.icrosuu;:,urc: and pm~ of !he weld fusion wne. In lIIis paper bOIh lIIe welding condlbOQS and tht mctal)"'l'OlI flCl se""gacion and $OlidirlCl'ion h:haviQr will bediscussed Emphuis will be ploctd on describing lIIe IIllO\tIef in wh ich solid ~11:amples demonS!r.l.linl lhe ,,"rical role lIIal microse~~.lion tan play in t!.llbiishing weld micIO$1nIC'urc:, JlfIIPefIies. phase s,abili,y. and SOl idif..,.,bon 1 .. lID!. . o f w.urloo . w.at ~rl .... . Oo:o~Dad •• ~Zl. lei Th. p' U ~De~ of e qu l ..nd In l .. ", Due the U"tu of _Ids 10 M ll end to M bel pfol II' prUeDt lD& . oUdlf1c. U .... cnc kl~ • • nd I .. . .total ..., . II"O'i ~..eUtlt., 1ft .11 01"' • ..toje~t , ,, b
<_.
8--TMS Fall Meeting 19,40 .. ... )
RlSION
IiI
"
,,
.,
T
GOHERENT PHASE EQUILIBRIA . M.J . Pfeifer IlId North'RIlerD UDi~lr, EnDltoll, IL 150208_
fJ'i. Yl2iIIlll:a,
The Dlhlle oi lilermooyllllllic equilibrium ill a OODbydrottllically ,tr8e:i two-pltue cohuenl.mid CIIt be qllile dilfereal 11wI11lI1 io lite ~ of . lreA. For eumple. 1H! wiD Ihow tllli metullble oo.ereal lwo--pbie coeJCiIteuce i. poMibie io I I:i""e-flb_ resJOD of lbe III'f!II-free pbue di ..ram ud Illat eiulk .lrlSl tilt iltroduce Dew ainpllriliea ill tbe free tIIersiN of dulicallr tlfelted lWG--1)hue miJ:tUretl. All o~w of the ef(ecu of el&.olic 11.-- "" eqllilibrium ill hiIIarl Iwo-pIt ... all..,. will be preIeIt\ed ill Ibe CODleI:l. of a vapllical techDiqu lor determllli"ll lite eqllilibrium Itat!! of 1.11 alloy ud I ~Ii I~IIOJ)' lor metutable ud .table coherenl p~ue eqllilibriom ill tbe lIapborhood of I COD&f1Ieal poillt. Supported by the NOribwelter:o UIliYeuily Matl!rlal. ReIearch Center.
ill (1<),<)<) . . . . . )
FLOW DIAGRAMS AS A TOOL .'OR DEVELOPING A STRUCTURE OF MULTICOMPONENT PHASE DIAGRAMS: B.Jl...I&R.!!dI..lL. Department of Material. Scitlltt &Dd EnttinmiD,f;, UIliYemly of Florida, Gaiuenille, FL 32f11l (oIDstract not aVl i )able)
PH~SIE DIA'GRAMPREDIcnON I: Fundamentals and Phase Diagram Representation, International Symposium
Sponsored by the ASMIMSD ThennodynlulIies and Phase Elluilibrill ComrmttfL Monday, A.M. October 21, 1991
Room: 204 Cincinnati Convention Center
Session CMirmen: J. E. Morral, Department of Metallurgy and Institute of Materials Science, University of Connecticut, Storrs, cr 06269.3136; J. R. Cuthill, Consultant, 12700 River Road, Potomac, MO 20854
(10,20 A.•• )
FACTORS AFFECTING THE VAUDITY OF BOTH CALCULATED U. Smi!b, Ames AND EXPERIMENTAL PHASE DlAGRAMS_ Laboratory, Iowa Siale UIli.mty, Amel, IA 50011. The validi ly of phue diauam iutOrmllion il all«ted by mllly t'.ac\on. Witb regard to nperimenlal delertDiu4lion of p _ informllion, uy uperiDlet'tt.al appl(w:: ~ IOUII ba~ adequate reso/ulioa IUd precilioa 10 defioe lite Ipecl6c eqllilibril Iblt are in queatlon. EMF _III_II, II III ellimple, IlIYe III occuioo lCCumuiated errotIOOUI dill wilb KO
(10,.0
~ ,". l
llIERMODYNAMICALLY IMPROBABU;;PHASEDIAGRAMS. H 0I
ASM In!Crnational. Materials ParI<, OH 44073; and T. B. MusalskI, Dept. of Met4IIurticoJ EIl, itlWin, and MalCrials Scienc::e. CarncJie Melloll Uni~ersity,
16,30 a.II.)
JOSIAH· WIIJ.ARD GIBBS AND TEAOUN G lllERMODYNAMICS OF MA19.1Al..'l .L..l:fERlZ - ubonlDire de Thennody .... mique r.ullll"'lique
UA·CNRS 1108· Univers.ittdo: Nar.:y I S4!106 VANDOEUVRE·LES ·NANCY CEDEX· FRANCE Teaehinjllhe basis for understandina Ihumodynlmks or P"K equilibrll. the", u, .... 101 of~aI ... b~ books.. bullhe beSI of aU Slill remainl the oriaillll "Equilibrium of Iltltl""V""US SubSllncts" fil'S! publi.hed by Jo.ilhWiIl. rd Gibbs in 1B7t1 In Ihe "Trannclions of lilt Cona"':licul Academy ". Ml
IlULTI<;"IlMPOIn' PIIASE DIAGRJ.IIS WITH <;Hf.'ITCAt. PQT""1'IAI-S lIS ~XES, Aec. C.""da KlC lA7 . In lM.ny .yo ~ it is uuflll to plOt ph. .. ch..uool pot.nUd, u a tl\t a.llio ~.arIU>l ea A. An anotple . in an A·B·S-o oy • • .,. ("" . .a pM a. d1a~r .... in""1vln~ . "" y .. d.abl •• 1...
di.9r ..... In ""'leh or a u h.ld ~on ~ unt. A .and B a . . . .td a ) , 1'02' 1.... I'Sl. 1"", '''''2'
•• ~. h.av • .any "pplication • . He_inane .. 4i"9r..o. in which beth ax . . au .Uhaz eh-.i.c.1 poe-nUala or ....par.tu ...... UI be dl. _
eu .... d fer .... lti·..... l .... Hie_tnt oy.tum . o::t;e-"Icd pountlal _ caopo. i.tlon ,H.~r . . . . o u~h . . a 1<>9" P02 veuu. _tal ratio d a g. .... • • e<>n .... nt '$:12 in ." A-B-S--o Sy . . ... ....111 al so ... p ..... nt.cl. '!'h ..... latt •• ob.y the rul u of c"" •• ruction ef bin.o ry .... C""""". ition 4109 ..... . General alq<>dthma for . y . . .... Ue. lly c.leul.e1n~ and plottl,.,. both eM ... Wpto . of .1i. 9"'" ! <"· "YI"IU-ic propen1ea " ill be d.ocribe<1.
Pinsbur&h. PA
13213
In the coune 01 editina phue dilp2lftS foe the S"""'"l:, il ..... be .hown Ihat JlU))lisinaly conWtent and ""'ful pn:dictioM can be made fmm the .ppliCll\ion of the ~.n·1 Hoff equltion for tile dilu!C ""ions, mel fmm 10I'I'II: quantitative jud,cmen' abou, rhe lilrelr ma",itudc of the ooIutiOfl ifttencUoa pamnelCl" for the more concentn!ed ~i'OM. Many odditional dctaiIed ftatura of phue
,ven
(11,00 a .•. 1 COtlCZttNlNG THE CU!tVATUUS OF Sn>:::U! PHAS~ SU""ACFJI Iii TEJIIIMY PH AS ~ OIAGIW>IS, An;i~ . Hell .... 11 a nd J ..... . O
"' taUurqical .... u riah !!"'i!in... ing, Hichi9An Twehn<>I<>9"lcal On l""r~ i.y, HO"'lhton, HI 0911.
PuDlbtoed • • rnary ph __ diaq r .... .and tt.:. ... lllu.trat--"- In text_ . freq~ . ntly r~pn . . n • ..,Ud" o and 1-1'1"i"". ' "rhe. . whiel> . n "",.ully COncave Or cc:eulon.olly til. rever... . COnoiduaticn of fr ee e""«JY ourhceo and .pplieation of tile ~n t.anq_nt j>rinelpla .U99"ot <.ha. ouch <"On . . ructlon ~ .... . be dUfk"lt to .chlev.. and tIl .. t, in ga naral • •uch . uriAc. . .. ill .. xhibit oaralltl C'l>rvatu.eo. a lthough thue .... y c,,"n'1" ..1th ~po o lti"" and t_ raturo. E>
a""
(11,20 0 . 10.)
CAD PC·aAS&D SYSTDIS FOR DYIWHC DISPLAY OF PIIAS, DIACJWIS AIID C'-YSTAL STRlIC1\IUS, Klshlll" M9th. Depar ... nt of llatuhla S
KO_'1 &1 . . . . pood. oQftvara . . "",tur ... _ ,raphle ...o lutlon and colo. pal.tta uO&. of PC·baood oYOto.. has \.Joprovod Th. abl1t~ of both CAl1 _ PC·baood .yot... for dynutls dbpl . y of bi"".,. ..... hlJh ••• ordar ph.o.a dialr.... and erynol ot."etu ... , .. Ill b. nvl .... d and cOlOp.ud. Flut .ppro.. eM. to th.o u.. of intoned_ vld.o oyo ••••• CD -ROIl .... ra'., ond tho ded", of 01..,1. " "p&rt
.no...,....Ly OV4r eM plOt f ... l'uro. (9,20 •• 11.)
HIGHER-QRDER TRANSITIONS , CRITICAL POiNTS AND MULTICRlTlCAL POiNTS IN ALLOY PHASE DIAGRAM§. s.m..el N _ Alleq, Depirtlllftll of Mlleriah SQe:a1:e ud ~DeeriD«, MIUlch_11I "t,titute of Tecl".oIOS1, Ct.mbri~, MA Q21$g Thi. 1I11Ori1i lecl~ will reriew tile ""'~ of bisKr-()fder Ir_liou crilical poiall ... d mullicrilical pOilll' ill 1iIo,., IDd their rep
. y...... "Ill ba "".c.1ba4 .
u"oo
p .• • )
SOLID HOD!!!.IttG, " 'l'OOL P'OR 'n!E B1'ncnV>! US!! or 'I'1IUE DHlmSIOttAI. PHASE DIAGIWG, J . n. DotLa'O and 11-. Hdla... U, Dotpt .
CAD
TMS FalI Meeting---9 of M U llurqied ~ ... te • .lab E"'lin.t.e
I'lIchi~an
1'eehn(>1"'lic.o1
f._
p"" oe di"'./ ..... an ..-.g t~e ..... t _ d a l .rid Indhi"' n. al>la tooh . vdlabl e .., M ullar9 lo t. and _ taTi&1 • • ci.ntl ... . IInfortun .. tely. eh_lcol oy. t cu h 09 1"'l IOOr. UI .. n to", deqre... of int.oduco dlfficultl •• in pha. . di&9 th .... ., deg ..... of f u . . - . l oo l1d ..,...,,11<>9 to U.. ..- d u... noional ph. .. 4 i.9 .... pt'Oblemo . The aW1ieabilhy of
Road. DaVlon, OH 45432·1894. and J. M. MacLaran. Deparlmenl of Ph~sIc:s. Tull1l'li Univllrsity. New O!I1Ians. LA 70118 Energi" and bortd chal'8Cleristics o f plartar fauha. bounded by partial dis localions. influence the mobility 01 super-dislocalions wtlicI'1 are Itloughllo rnecialll Ihe yield and Ifacturll behavior in TiAl . Thll effect of 8fl!l·site def9ClS on the anergetlc:$ and bonding 01 planar fauhs in TIAI are calculated using a layered Koninoa Kohn Rostoker {u
of ph. . . dl.a9nm • •
PHYSICAL METALLURGY OF INTERMETALUC COMPOUNDS I: Alloy Modeling Sponsored by the TMS High Temperature Alloys
and TiiQnium Committees
Organiurs: Dr. R. Darolia, GE Aircraft Engines;
Dr. D. Miracle, AFWright Laboratory; and Dr. Y-W. Kim, Metcut-Materials Research Group Monday A.M. October 21, 1991
Room: 2021212 Cincinnati Convention Center
Session Chlrirmen: Dr. Alan Rosenstein, AFOSRjNE, Bldg. 410, Bolling AFB, Washington, DC 20332-6448; Dr. Chris Woodward, UES, Inc., 4401 Dayton-Xenia Road, Dayton,OH 45432-1894 IS,lO • . • • ) COMf>U'TAT1OtW.WoTERIALS SCIENCE Sl'olI..llATIOHS OF HIGH TEMPERATURE INTERMETALllCS·. A.l Emllmln J.H. Xu WId w. Un. Physics Dipllrlmllnt, Northwestirn UolII..slly, Evalls!On. IL. 60208·3 t t2 AdIIaoced Iheoretical/computational techniqun combined with \hI power ot S~fS now ptOViIM an _$landing of man ... M Ihe alOOlic sea'- with an ""'PIecedenled 01 datal and aoaorq. In conll'aSllO an analytic . ~I appro.cll. 1"- compul.tional awroacII 1& S)'fl\halle: It. goal Is 10 slmutat. rnate~ats l)'Itllll1l IJudiId Inctuding " much 01 thl _Irooment as posslblo. Computational malori.lls dn!gn hinges Oft _ basic UIIurnpIian: rn..,..,KlC\lIc pR:Ipertles eM be deI. ot lema,), additionl. marten .flie lran. torm,lioRo . anU·phast bounlS;lIies (APS',) and other t.ulIS In ".,.rmlning I~ 'lrvc1urel. electronic end mecll.oleal propertln 01 elumloum 10t"m, lallic "Ioys. p,rticulat 1II1",ion hIS been g1vOll to lilt ~ .. brlns.roess versus ductility issues In Nt and TI .... minides. · s-""" by Il'1o AFOSR (g'ant No . •. CJ3.06) ... A. _ ....... _ ..... _ 19,eu . ... . APPLICATION OF lJ1t ~ ARW l€'1lI:lD 11) Im:EIII1ETALLrC GRAlN IQINO'dHES: * M r !l!lsI!e:s Sard14 NatiDn41 IAboutories . livenoo .... . CA. 94551-0969 Recent ariVIUlO!S in ccqo.>t ers and a tco1i.stic 1IIOdeh he"" ""
"""".""l}'
Specific eqq>i"s of EN! calculetiorur of the equilibri.., structure Of VlIriOWl i.deal gr.in bourdarie& in Ni.,Al will be p ........,ted. 1he eff""u of s tol<:hicn>try will be e..phaIIfUJd. CalculAted gr.in b0undary energies for t he 10t".... tall1c do not differ greatly fra. that of the equivalent pure Nl bound&ry. !t>lecular drr-tcs calculAtions .ue used to investigate the Itlnetics of fracture of the.... bounda,i"". It h fomd t hat even though the Ni and Ni.,Al boundaries fracture at about the _ applied nr""s. t he Ri..AI bound&ry appe.ono to fracture in • l10re brittle """"",. A ooed~s of secondary crack" appeor in 111 but not in NI~. "1hIs IIOrk suworted by U.S. OOE Contract DE- ADl4-76DPOO789 (9 , 30 • . ,. .)
EffECT OF POINT DEFECTS ON THE ELECTRONIC STRUCTURE OF PlANAR FAULTS IN r IAl: C Woodward UES. Inc.. 4401 Dayton-Xenia
(10 10 a .... l
STRUCTURE AND MOBIUTY OE DISLOCATIONS IN NiAI : UES, Inc., 4401 Daylon·)(enia Road. Dayton. OH I. Reo and O. M. Oimiduk. Wright Laboralorias • ~ AFa. OH 4St~6533
.W,,'.·,....
An embedded alom potential developed reeenily lor NiAl was uSild 10 stl.ldy cislocatior\$ in NiAI by atomislic simulation. The core 81ruclUres 01 <100>. < 110>. and <11 1> type dislocations were calculaflld and an.aly~IId. The mobility 01 Ihll dlslocalions was lllU1mlned by studying Ihe core slruclure evolution under slrllss. Using the minimum shear stress required 10 l110Ye lhe dislocations as a measure 01 Ihll d islocation mobility, the relative mobilities 01 Ihe screw. e elge. and mixed dislocations I~inll on Ihll {1101 and POOl planes were compared. resulls will be presented and discussed.
noes.
(10 , 10 . . .. . 1
BRITTLE 1'0 IllK:TIU: J!ILWlOll 0' IIlGH TIlIPDl4TU11! IIIfEll!l£tAlJ.ICS STUDI ED II t:IlIIPUTr:a SlIIIIU.TIOHS: P C Cl aw, c. S. IecQ""ot. D. ~1IO .0Id J . /& . 'Utia , Cuter r o~ Maurlal. S1mlaleU ..... l utitllte o f llatul.lf Scteac., U-136. University or """"'"" t ICllt. Storro. 06269-3136
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T.... nrd .",,1., Dyneale. C"'"""'tl ' .laIl.tlorul .t dlffer .... t t~ .......t"......... t~ . . It~el •. The any body lat ... ctl ..... ....d In tluI olalla, I"". _ro d • • I,,_d . . .i-_pid •• U)'", ... tna t . chn!.q .... ulaUd to <1> _ _ _ d At_ 11eth<>d. 1'r~ 10 tluI plaotlclty of theu dloYI ••• f UDe""" of t . _ntlln " Ill be l'. u en t e4. an
ATOMlC LEVEL INVESTKlATION OE GRAiN BOUNDARIES IN STRONGLY
0IUlERED ANDWEAKLYOIUlEREDINIHIMETAlUCCOMPOUNDS
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and V.Vllet
Depart"'ent of Ma'~ri.l. Sci.""• • nd En!!,,, •• ri,,, Univ ... ity of Pcnnsyl .. ni. Phil ad. lphia. PA 19104·62 72 The mun pU!pOse of tIIi. Sludy il to 00011'"'" 1M , .. in bo.Dduy 11",.,,,,",, ."d , be ... ic al 4illribll,ion 1I ,rlin bollnd.ri.1 be' ..... n Itr(lt:tlly onkred oIloYI. U Ni3Al, witll tIIl1 of .... lIdy ord.red I((OY, U CII) A... Th. 'n,.rotom i. fore.. '''' "",resen,ed by "'""y.body ' '''piricIl pote .. ti.11 blled otr til. serood moment .ppro.illl.. ion to ,~ lipt. biDdia. d.... ily of .. ate.. The equil ibrium , rain bowIdary stru<:III"" IIId cbemical dillriblu ions aK computed by MOate·Cer!o J.i1l1.IIPOD as • fU K tion of bulk composition ..... Icmperat""" It i. found w, lbe,e are din.." .. c. . .. , r.iD boun4ari.. between NiJAt III" CulAu bor b JlfllCruaJ ly IIld cbemi<:a(( y. Thi, un be .~p«:'cd 10 olIcd ",me lil h, ."" «plainiBI .. by C" lAu i. du.ctil. ill polyc'1'staJline fonn whi le Ni)Al i , very boule im polycrylllm". fonn.
10--TMS Fall Meeting material. based on , Iu",i nl ·cstbide·metal and alumin •. boride·me ... l . ys temL The dfectofprocnainr parame\.trs. t .g .• ~en denaity, particle ';u., ",Id anl .Ioi~hiomelr)', "k., on product deno.ity and morphology i. dileussed. The potential of u~nr this approacb in !.he production of ""nmie·rnetal composite m,teris l. is , I... divulSed.
,
iii
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"
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INTERATOMIC POTENTI"U FOR SOLUTES IN ORDERED INTEAMETALL.CS: .sJ.....BaQ· and D. Dimicluk. Wright laboratories,
WPAFB, OH 45433. 'NRC SenIor Aasealdl Associate.
The phenomenon 01 solid soluliOn-hafdeningJsof\ening in ordered Intermetallies Is Il'Ioughl 10 be governed by Ihe size, modulus and chemical interactions ot solutes with Ih' partlnanl d islocation cores and kinks. $tatiflt(cs oltheH interactions are complk:alild by the non· planar and eKianded nature 01 Itle dlslocallon core SI/Uclures in in[ermelallics. In addition, the Interactions thai are 01 primary Imparlance in solution·hardening theories are thought 10 be short ranged. As a result, ttlesa int8factionl must be calculat8(l on an electronic or atomistic leval . Here. solute· lattice interactions are devetoped in a parametric lashion within Ihe En'IOedded Alom Methocl(EAM) Iorma~sm, lor 82 NW. Siza and modulus interactions are modeled using Green's functlon melhods. The etI1ICt 01 solutes on lhe APB energies II u&lld 10 de~ba Ihe cIlemical inte raction. Rasullant Interaction profiles betwlt n solutes and dislocations obtained using this method ate bMlIy discussed.
PHYSICAL METALLURGY OF INTERMETALUC COMPOUNDS: Poster Session Sponsored by the TMS High Temperature Alloys and Titanium Commitlus SH "Poster Seuions" Sectiol'I of the Rna! Program far Abttt::tcts.
Mond.JY, Tuesday, Wednesday A.M.IP.M. Ckiober21,22,23,1991
Room: 202/212 Cincinnilti Convention Center
(9, 00 a . ... 1
PhuH and Microstructure Morphologlts in Combustion Synth rsized Niobium Aluminum Alloys ~nd Niobium Ah.mi n lde Composite M~terials. C. T. Ho, M. G. laxmibntha and /. A- Sekhar: University of Cinannati, Cincinnati OH, (522),(1012 Results of an e~perimental study on unidirectional wave combustion synthesiU'd N&-AI ,Uoys and composites containing NbB is described. The effect of combustion initiation temperature and composition on the microslTLlctural morphology and phases is studil'd.. Correlations with Ihe initial parametef1 and reaction velocities have been sought to understand the kinetics of the rate controlling step for sustained combustion and for the explanation of the synthesized microstruct ures_ V"ious strategies of controlling the dis tribution of the reinforcement phases ( both ductile and hard) in the composite are described. The strategies are hued on experimental modelS for the toughness of the composites and numerical calculations of heat now pa rameters.
( ~:
lO . . .. . 1
Combustion Synthrsiud Processing of Ti·B-<.:1I Compositu,.I:I....r, Li. S. Bhaduri and /_ A. Sekhar, University 01 Cincinnati, Cincinnati, OH 45221-(1012 A systematic investigation of the processing J microstructure J mechanical p roperly corU!lation of ceramic· metal composites in titanium alloys containing Cu and B is reported_ Th$it<>$ are produced by combustion synthesis. The processing yields a microstructure containing ductile and brittle const ituents. Ductile phase toughening is responsible lor the increase in fractlln'! toughness to a high value of 9.9 MPa (m)l!2. A processing model is presented to explain the interrelationship between processing variables a nd toughening o f the composites in the presence of porosity_ ( 9 , 40 • . • . )
HKJH llMPgMTIf&f\ CERAMIC POWDER PBOClt'lSli'IG By SfLECUYE WEB SINTEBIHG Uda, 1..obhrni ... oyOd lIId H.l-Mamo .. Ceo .., fot M.... i... SeieD
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Orga"iurs: R. Darolia, GE Aircraft Engines; D. Miracle, AF Wright Laboratory; and
Y-W. Kim, Metrut-Materials Research Group
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PROCESSING AND MANUFACl"URING OF ADVANCED MATERIALS FOR HIGH TEMPERATURE APPUCATIONS I, Powder Processing and Combustion Synthesis Sponsored by TMS Structural Materials Dirnsion Monday, A.M. Oelober 21, 1991
Room: 203/213 CincinmH Convention Center
Session Chairmen: Sleven G. Fishman, Program Manager, Office of Naval Research, 800 N. Quincy Slreet, Arlington, VA 22217; A. M. Cadalla, Department of Cbemical Engineering, Texas A&M University, College Station, Texas 77843-3122 {a,]o " .m.)
(ITWit~)
AppUeltioo ot COlnbunloo Syolh ... ls 10 th , Productloo or Ceramic·Metal Compo.lte Msteri. ls. H.J. Feni a nd J..J. Moo'e: Department of Metallur~cal .nd Materia lo Eo lfineerin" C<>lor.do School ofMinu. Golden CO, 80401 Th .. spplieation of combustion Iyn!.he~ . of « r. mie·metal composite materia t. i. dis<:usud ... ith refe rence to seve ra l mode l composite
00,00 . . ... . l
PREPARATI OH 01' A TAI'ITALUM C41tBIDE· GRAPHITE COMPOSIT F.
C. KrM and D, S GRUMMill!, p.,pI_ of M~lallurgy. Mcc/tarlic. anll Materials Scle"",. Michigan Stlte Uni"""i\)" Ew w s;ng MI. andO . OOrrSTEJN. lnsritut fur """taIkunde"nIl Mtullphysik. RWJll Atchen. 51110 Ale""" FRG Tantalum carbide hn!he hig""sr ....,Itin:ll poinl (3983 DC) of the k....... n .... M • . ,,, 8t Han phase .tr\lCN~ JlO'sesses. <110>11111 slip sy.tem ... hich confers low lemperaluK dislDQtion mobilitY and higll tempe ... tu", ductiliry. Howe""'. like other lran,itiOl1 mew mooocarbides., ir i. norch sen. itive and hllS too tiule.oom If:mpeulu~ ducrilily ro be of uSC in all bu, specialized Ipplkltions, and docs not compete weI] wilh Olher carbides'" bigh lempe ... N", S"""B1h and ~p n:siilW"lCe. II is ,hIlS likely ro benefir from incDrpolation of. ",inf~mc:m plwe ro improve crcep""sistanoe.lowerden,ily. and impart an = pt.ob~ !evel oflow !lemperltN'" IOIIgh",,". Oraphite i, an ObYiOUHandidilll: for ib,s role. botb bcclllSC of ilS vel)' hi, h speci.oc s"",,n,1h and . Iiffne.s, and il$ 'lw:rmoo,namic compatibility wilh TiC. Ba:usc a 51oi
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{l O,lO . . .. . 1
"ALUMIN'" SHORT FIBER RE INFORCED CORDIER lTE MODEL COMPOSITES FOR TH E STUDY OF II'ITERPH ASE EFFECT ON TOUOHNESS·. ~
W".IIU l k Ind An, P.rvi.;.MljOdi. Il.i....i'y of Del....... N...... k. DE 19116. TOtI . ~111l0iii. AI Ioilll I<"'pe,,'~"" •• be d1ff~_ioro·i ~d ... cd fomo",ioro of .~ '''''''1'__ fi ...., ... in,erp~uc u".". I poulblc x e..rio ...b.", ,he ule" of p~Llo~L i, ..... ""iacd ~1 Lke I~"" dcfo'IL1 .. ion u p.bil iLi". of .bil .... orpr-tlu. iftL"'I'h.". p",vi4i~. lI>e L... petlL.,,,
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;1 • .,.... I. . .,... " ..... i!OotL. In In d lon La rodli",. ,~. in,,, .. of phenLlfnUOo. AllO) lMot libe," .... .., ..)....... III> I Si02 III .. .n" 'bcR '.co'1"',.'od in • 2M,
,hi,
MOLYBDENUM D1Sn.JCIDE MATIU.X COMPOSrTES. M. Sinp, MNerialI ReJW'L:h Ce>Uer. Rcnut:1aet Poi)'ttChLllc lostilUIt, Troy. NY 11110: A...1kI:.i;. Malaials .t MeclwUc:s Oi"ti$ioo>. Soulb...,,, Ruurch IAniIUIC, P.O. Dn ..... lIliO. SII'l Anronio,. 'IX 1S228~IO McnoIlIhic IQO\~"'" dililiocide iI-..IUlflICIi.o: m-Lal& CJOIDIIOWId ....viII'
hip mellin, poom (2283 K). 10.... deCl5il)'.1tld lOUd OJcidoLion raj,tanoc. AL bip
rcrnpcrana ...... "'f.hea.",. ~ .. silica hyer r....... II ,he.....r~ eE lbi. ".Ierial. fUwli", in uJ,lble live.s in elC.Ul 01'2000 houri .. )973 K. MoIybdcn"", disiliridc gn alJo be oJloyed with other tefrlcuy silicldel 10 improve the mcc:lwtic,l ~oties and oxicla.IiOfl ~ri5tanoc. The briltlerleSi or moIyWc~"m di.Uiclde II fOOnI !empenL\lf1! hu p""vcnLcd iu ux u lCmpemW'l: IINCIW'ol maJeJil.l. In IOCCnl yun. 1OII,i>eninl and menJ!heninE of molrbdcnumdiliJicldc hILI been at~~ vcd by VIUiOUI ..,inf~ .... nu. u iL i. being
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.TOf,~and luucLurn appliclLionl. This ~ ""Ll bric:ny discu" the pnxw;in& and prOpenict of tome molybdenum dililid« .... tril compoIilCl. Tho thermodynamic IIIbililies of JOmC pOLA:ntill reJnfm:cmcnll like ~ sili
1
$10 'O.t1lI.::S r. .tLUlflNWtf AND tflUl SnEL THR()(JQr V.tPOOll Lll'i6stTlr.. ,1.-'.'.No __ B.tb ... s._~ .nd 5.S. ........ 111<11... lnUH"te or Scltftee. IIen~oJo... 56" OU. JJoIIIU.
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Ce ••• le coetlngl on 1""..,trl.1 cOIlPoneau cu h by f l l . depolltlon. ""'''9" thl .,1.1 ... d. of d __ ltlon 'ecIlnlq .. u <100.,.101'0<1, l'!Iyolcd ~.po .. r D'po.UJ"" (PlIO) 'echnlque is puIHbJr ,he "'$1 von •• tlng' f~r hi gh """Iu tur . .... • ,... 0,..
(9,)0 • ••• )
DE S ICN OF I NTERFACES BETWEEN HARD PROTEC TI VE CO ATING S AND INO RGA N IC RE I NFORC· ING ELEMENTS IN METAL· MATRI X COM POS I TE S TO OPTI MIZE STRENGTH AND TOUGHNJ':SS: A.S. ....."'" ond J ..... Carnie. M....:lI_tll I"I;'~II olT... hftal"". c ..... I>Iid, •• MA 02 1 3~; ond V. Gu~ •• Tbay.r Sc:bool o( En,ift"rial . Dar.moutb
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depolltlon. I_" ....... be/l.YI~ .. r 01 c_" *"\11 .... 1'1"0" .. t . .hls , UCb . . .1I.. lnl .... M -.lId Itod .. u,. ... b ...... . . . . .10/0 Illd UHcI u CIte "",eUng .uorJal. rM coo.lngl .. do .,.re n ..s ..... for .",.. 1..... n' f or cbelr r"btl"'" .0 .Iu.. ed lu.". l'Ill l ".~ , dh"" .... tb. " .... U"9 p ......... fIII thl proporU .. of ,/to C~ • .., ... rfle ... "I th porUnln refer..... _ to corrOIJOo
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Call.,•• H"""" .... NH . To o~irni .. h ...... ....t~"'tb """,!Lo, witb I. f,"",ooc;a &bet d, ........... i.....t..t maeri. com~, 1\ ;. • ......,y to odIi.n .!foc" .. uoelt ",oat.t tho lo.ilored iD&erl..... brt_ .110 roil>tatcill, fiboro ..... Ihoi, p.-owe" ... coMiap, ..-bil. maiDLlLiai", I fIlOI" II>oed bo~ the 0>101iop ond tbot .... , OJ ...... rix. Tkio ..... bo~.-.d by ..... '....11;", u.. ",..~ wl« dtI.......aliolt fr ....... ...,.\ 1100 "'"" o .. t ' - ,....u. A .........I, of I~ " ,.1a.1ooc1 to pi~ 'bon ...itll SiC ....,i.p, m.Iorci. , com~ ... willi AI.uo,. "IO,nc. will bo d"";b ....
..,
(10,40 •••• )
111 ,00
TMS Fall M.";, ,g-·n EXamples o f int e r f ace .icr ost r ucture in different •• tal ..ttix compo , i t . (partici • • nd fiber r.inlorc.d) syst_s will be presented and the illfllications on the r.· lultant properties of the cOMPOalte will be discussed.
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COMPLIANT LAYER ~D INTERFACIAL REACTION BARRI£RS FOR T1 3Al- AND NiAl -BASED COMPOSITES: A. K. lIis ra, NASA Lewi. Re Bearch Centor Grou p , Sverdrup T.chnology, Inc., 21000 8~OOk~rk Road, Clev.lend , O)! 44 135
For Ti)AI and NiAl ~trice., ~ny of the potent ie l tibere either .ra not c~eic.l ly coapatible with ttl. . .tri.x or do not ~v . th. . . tching CTE with th • .. tri« •• Thi. necesdtat .. th. ne.-l tor appropr hte .odlt1cation. to the tiber- .,.t rlx intert.ce to acco..04ate the.e tva inco.patibillties. on. .pptOach to accoa.odate the en: .i ... tch i. to in.ert .n lntertacl. l compl iant l.yer between the t iber and the ..trlx. The ch•• ic al r.ection betvee n the fiber .nd •• trix ca n b. provent.a by interrecial r e action barri er •• This paper v iii discus' cur rent re.e arch erforts in coepliant laye r. and interracial reaction bor riere ralated to the dayelop-ent of TI)A l /SiC, HIA.1/AI20), and Hi Al/ Nb2Be17 coepo.i t e svsto.a • (10,)0
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( 10 ,4S •••• ) ROlE Of TtE FIBER-MATRIX lNTERF-'CE IN INTERNAL HEAnHG OF FIBER· REINFORCED CERAMICS J. W. H()UtES. ThiL i..Inh'f:rsiIy 01 1o.IieIIigan. DepI •. 01
_
STRUCTURE AND PROPERTIES OF METAL-CERAMIC INTERFACES I Sponsorbi by TMS Structural Materials Commiltu
E~.
:l:25O G.G.
a.o.n '-'I>:Ir""'Y. Am MIDr. 10.1148109.
~ ~ hoating in _·rt/f1CIIt:I>dUfILtl'LlcaOOClnIfO'OuOhItw ..".11116 frtdlonlollolditlog 01 Ilbets along . . . , . _ ",,"zones. FOf • • .-npIt. al!fl't*lIture riM
in.>ala 01 tOO I( lin been .... _In uniIIO'tdIonaI SiC~_ ~-cetatM: ~
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MondilY, A.M. October 21, 1991 Sessilm Clutirmm:
Room: 208 Cincinnati CCl'1vention Center
J. Singh, G. E. Aircraft Engines,
1 Neuma nn Way, Mail Drop H-99, Cincinnati,OH -'5215-6301; K. N. Subramanian, Department of Metallurgy,
Mechanics and Materials Science, Michigan Sta te University, East Lansing. MI 48824·1226 (9:00 a".) IHTE~fACES IN COMPOS I TES: K.K. Chawla. Dept . of Mater i als i M.tallurqical Enqinee ri n9 . New M~xlco 1·tCrt, SOCO H O, IlK 11801 C ERAM IC/META~
Int a rfe ce reqlon in a 9iv.n co.poslte fl •• a qtea t deal of I~rtance in dete ~inin9 t~e ultl~te p r oparties of the coaposlte. Althouqh. an lnter f. ce i . , by d.fi. nitlon, a bidimens ion.l r0910n lhrouqh whi c h the r e OcCur. a d iscontinuity in one oc .ar e .. t erlal para~. ter • • in o, act ic_, th.re il always .~ vol~ a •• oci_ ated with th. int.rface • • qion over wh ich. q.adual transition In material param.tor(sl occur • . The importanca of the int.rface r eqion in composlt., stems from twO .... in re. s ons, Ii) the intor fa c. occupi.s 1 very la .qe ar ea in composites , a nd (ii) in qena r a l, the r e inforcemen t and the M3t.ix ge ne r ally form a sya t em that is not in thermodyna.lc . quili b r ium at the in t erf.ce.
lrlctionat oIiding 01 libers lIaS led .. Lho de'¥elDpmtnl 01 I ~....nich an be used .. Hlimat. )ho ...., oIlr1..l'lilClal_ in lib1l' rtO'tiorOlCl ct<_. Tho _ . an.! ~",.~....,.. Nl . . .
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( 1hU •.•. )
STRUCTURAL .IJIO CIlEItI CAL .£lAXAHOII AT IlET.l.L-C£AAMIC INn.UCES: Krli~n, ""n, Katerh l s [nglnteri n; Oep,rtNnt . Renn.'.~r Po'yte~hnl~ Institute. Troy. IIr 1ll80-JS90.
Tilt Conttpt of Ifttufacla1 ...,1,lItion h dhcusnd In t e ... 01 the (n t e rpllY bet .... en In Lerhct,1 ... fech ..d I nterfaclll che.,htry. Ep(taxl al ~hl-cerl1l'(c tys telllS ire used u I utlfu l upert_ntll Ipprol.h to hoht, 5tructurl l Ind che.tu l effects at compottte (nterflcet. Expert""nt.' trin'Llluton .)ectro.. elcroscopy studt" " tth tingle ct ra.lc fibers i..., .lso described. TM uperlO'lentll obn ry,ttons ,..., rltloft. l h t d t n t ...s of tMl'IIIOd)'lll!ll(C Llucr\pttons of $ur fltU U$ lng tILe IIIIHf construct 1011. ' n thh pretent. " tton . we cOfltidcr bow thh Interfiel,1 energy un IffK t trw c rys tl ll~ .. pI\J' and ..rphol~y g( tbe Inte r hc.. The IppllCIt(OOI o f phi •• dl.gr.... to ""O...,sent botlL c....,c'l ,rid stt'Uctu .. ' e~ul\tbrli It Interf'''5 h Iiso de .. loped.
12-TMS Fall Meeting
TUTORIAL LUNCHEON LECTURE Monday, October 21,1991 Cincinnati Convention Center Room: 203/213 12:00 Noon - Brown Bag Lunch - Optional 12:20 P.M. - Lecture Begins
spttU:n: Professor Krishan K. Chawla Topic: Composite Materials for Aerospace Applications
.... pilUde of .... tri. Q"CCp IIIUSt be limit«L W tltIIlhc ,","der of load froot !he .... tria 10 the fiber ""'" toO( u:oced die tiber Ilftnph. For InD$Ycnc: tellS, \he o;JUl' ruisuo>ce 01 the matri .. muaial, "";!h die bella"';';'" of dre fiber· IIW.tn.t lllteri".ace, is ~ iaeontrolllnj aJIIIp.I5iIc CI"CqI. SEM analysis _ uaed 10 IIIIdmIInd failun: ~ and ., idcnrify typeI 0( 4Imqe ir>c:....ed by 1M overall oompolile clurinl crup ddonnation. AIIaIytic:oJ wuI: ",ith INaomcchanicai modcIs inclic:lleS!he compIWty of the ddormatiolltnOlks for OOIIOpOSite ryttems ...,;t!I W"C&k fiber-1I"\atI"U i,uerf"_ boDdio.... W ith dieM: modell. the complu effect !haI ~ .... I _ ' bve O!I die composite Q"CCp rW$I&nCC Q.II olIO be unclrntood.
oJon,
u,OO p .a ., Ef hct. of th ...... l cycU n9 0" the reddual 5tre •••• i n tit.ni_ .lllai n id. - sllicon c.rbid. fibsr reinforced coapodt. •• P. RangAlw'IIY and H. Jayanann, Dept. of "It.rielS Sci.nea .nd Enqln • • rinq, Unheni t y of cincinnati. CinCinnati, on 4~2: 1- 00 11. R.aidu.l . tr ••• prot i la. in • t!t.niua .luainid. . . trix - Sil icon carbida fiber rainforced coapoeit., h.va been . . .a llred udnq the x-ny ditfnction Cdnll) technique in tha • • -proceased .nd th.~ll)' cycled condition•• Th ••• profll . . in the . . trix ph.a. d.t ....ined by .ucca. . 1v.ly alact ro- polhhinq th. .urfac. of the coapo.lt•. In 9 .... ral. pia" .. atr••• condition ,. ... r. found to e,d.t in the a ltrix . t pl.n •• f.rthar .... y fro& the fiber plane, and coap la. trlaxill atr•• • • teta ... >:". found clo•• r to th e fibs r fllrl.e. ..In!ta .Ie_nt a e thoda (FEM) ..a r a U5ed to pred c t tha a tre •• pro t ila. and ."P. riaa ntelly ob.erved trend. i n the a t >:" ••• profi l e. lIere co,.p ared with th •• a prediction,..
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}IOi"DAY I'}I COMPOSITES II
~1I$u rch
TMS GmeNI Abstract Sessimc
Moncby, P.M. Octobn 2l,. 1m
/l"upportlld by k'rjght Labor lttor Jell, IfLLN .
U ,l(I p.a. )
Room: 210 Cincinnati Convflttion Cfltln
Session ClWmum: Robert M. Aikin.. Jr., Martin Marietta Labs. 1450 S. Rolling Road, Baltimore, MD 21221.J898 (1. 00 p ••• )
11fE EFFECT OF SERV ICE TEMPERAllJRE AGING ON INTERFACE
REArnvtn' BETWEEN Tj·6241 AND FIBER. IlEINFORCEMENTS: K A PMDClDloB OE 01.40. P.O. &oJ: I. Schenoe\ady. Ne.... York 12301
Lon.llime I{ln, rt\IIIic,"*= conducted Oft Ti-6Al·2$II ... z...2Mo (Ti-62A2) reIII1C11"Ct1d ....,1lI _enJ amently l>'ailable tiben., ~!/Ie rffects 0(
IieIYP ~ (6.5O'C) u;pc!5lft CIa ~ -a"iir1 Md dII: ~ at iJItaf_lUCIloca. The ruclivily 0( five diff_ fiben ...... invatiplOCl; SiJDII. nil2 c:oued SiJDII. Saphikoa. (tridl 1/ICI"";!bou1an ~ slK). a.C ooued bon;IQ Md SiC_led bon;IQ (SiCaBo). The UICIIt eI ruction ...... ~ for all ~~ folloori'l HlP QOIIJOIIdaIioa II 1lOO'C: miDimLI IUf;OOII 1a)'Cl" IfO"V'"\lI occumd Il"lcr iJoIbormaI. ex",*"" in . . . for limcIup 10 2()j() h. a.C-COIleci boroII Md T.s,.co..tcd Sipna tiben &howaI the mDSt uwmive....mo.. . iWeIion layer .,.....-Ih for _led S...",. Md SiCaB fibcn _ simil ar 10 WI for SCS-{; monofiiamerlll under OOIIIPanbk conditions. SlphikOft fiben (.... ith and wilhoul swn,) underwenl minimal reaction, allhollah a JJ.depleled lOne .... obserwd in ~.....m: ad;':cnl ., the fiben. MlcrostNcuual in~riplionJ were performed to cl\uacleri:r:e die ;"lIfrface _ lion &One ptluet Md reoc:tion UN\e lfOWIh after _ooIidMlon and aC!cr
,,,mace
........ u .......
(1 , : 0 p.a.)
FACTORS INFLUENCING ROOM TEMPERATURE TENS ILE PROfERTIES IN AS·FABRiCA"Tm MOO 1H1!RMALI,.Y CYaJlD T"i-I4AJ.. 2 1 ~CS· 6 SiC COMPOSITES: A.M Ring . Oe. Corporate Ruurdl ol ~iqImc:IIICenccr, 1'080111, Sdlcneaady. NY 12lO1
Four ply metal mlaiseomposilCS (MMC) elTI..Q421D1;1 n -142 1 Cab n·24II ) INII"Ioa reinf~ ..,.;m SCS·6 COIItin.-s fiberllu.ve bceII ~ for hiah cycle fa~,uc resimnee It room tanptfll'"' All umplel teSted bad the fibcn oriented paroJlellO the principal .sIre.. 1IId were IOId cycled II 10 Hz in lir all R-nlio of O.O~. Composiles scrucrures were evlllllted willi and wilhoul cxtn. )ayen ofmatri~ OUtside lIIeoulCr fiber pliu. ... ith and wit/lOUl utNde· hooinl of .... fl bricl ted surf..:es. and ... i!h .nd ... llhoul prior plastic teJUile str:lin. The speciment "'ere instrumented wi,h clcclrical potentia) to monito. cbma~ ICCIImll!ation durinllWing. Iktrimc:n!ll cfferu of extrll QUi et skins of m.m~ ITIIlerial .... _.,.ed. Prior plutic ICnlik ~n lit die composite de""dcd life ~ hiCh cyclic sm..es I nd enhanced life II low c)'Clic 11rUK0. "The cltctricll potcnUoJ np data are 5Upponive or moddJ eI fiber brid&inl ~ local crack tip ......... flftlC$.
=
Cl , ~
p.a.)
OUOIIM1'1011 IIEOWIISICS III IIET~ ""TIU" CIIIIJ'05IT11S. I.S. llaj ........ .nd C .H. " ..... , Battdle _ r i d In. htuU, Col ........ 011 U ~ J $
..... tun~ .... nul Indutlc ~.ro .... u "" ...,""M_ ...._ been 1llVU U9&t.ed lor. be .... Ti 15_l .Iloy r.o l ntgre-..! "to. &CS6 ISl e) tiberl. "NO diU.rent I.... inn• • y. t ... . (01 . ..... 190) ,. _r.
eubj.cUd t o !OO<"ICtonle ~do .... tion . t r oo. and d ..... tejecti ,,- .... . to ovd".U t .... e<>nt.r;buUou ot pl ... tid ty _ _ ;0 to t ho ovonll inolntl. dolo.,..,tiOfl • .. ponl. at tho _0"'00. TI>o _&nlcu • • ..,r_nt.o
_r.
""""I_ntod by axt." oi"" a l c r ootnKtur.o! I n"".ti.9&tion. . ... oha ll provld••.,Id."".. on _ ... bellove t.he _.ott .. dolO..... .0.100. r .. ~ lU " ill be p&". . . . .ud of n:II _lu.q . t~i.. u.•• ..... bo._ on tho obson-ed "" ( 0"'<1_ ...,.... ni_ .
The ~ ...:I 100m tl::I!lpa"IIIIr !ensile properties ...-ere CYlJIIIIed lor
plasma.&pnl)'eci and ronsotidIted metal maW: cxmposila (MMC'.)~, ell Ti- 1..... f· 2INb(in -..ei&hl·pen:em) .... tria and SCS-6SiC fibcn. In the astatne.cd conditioll. tile IonJillldinal (0') IIId fI"IIlJverk (!lO') tat$ilc popmieI we~ affected by the- amoun! 0( beu·phue or II"Inlfotmed bell-lihue in the manU. •• Inee tile pretenee of ~ phase. WflllteS .... trix 1OU,lincu and/or dllC !ililf· In addilion. for lon&:i tlKlinoJ umplu. the tiber Itn:II,tlt I fter proeeSllDl had 11i",ifiUQI iIIlluencc: on properties.. ltothermal.nd c~lic uposurc of 1000,iNdilllf MMC'o in air It ,he projected UH tempenrurc eI 760'C reluJICod in Jevere Joss ill p~ Mcch.aoisRII for ttreJ>jlh deJTldllion ino;:ludc maai. surface embriuJcmeDI by o~ne/l durin, bal:h iJOlherrrlalI/lCl cyc'" CJlposut'C, and fiber wen,tlt)ou and bruk.aae durin, qclinJ.
U. t D p.a. )
£r"poga.
CREEP OF lTfANIUM-BASED METAl MATlUX COMPOSITES wmt OONnN\JOUS ADDS: M B and W. R. c.din, GE. CorporIIc Rc:seardt .tlkvelopmon!CenIer. £or. Schmocad;y.NY 1230L
"The e~ep deformation of c'ominuouo fiber. titanium-bated metal llllai .. ~ila ....1 tllIdi«IlI$Ht,J. model .ystem of ~lIy pure tiWlium IJllII"tX "';dI SCS·6&ilicon caroidc: fiben. Te.sll wen: pc:rfotmed II 427'C in an oJr environmenl. Series of leots ... ilh loo,illldinil and II"InIVCI"Se fiber oricnWiotll lllusUl.tc ~ trt.nds in IIIc aec:p behavior. For Ionliludinal sesu. !he fiber Pnin-IO-failu~ dictat'" tile creep life. To eucnd the life. !he
LAIIllUolnl CCloIP05ITU &\SED 011 111.0.1 and II.ller II . Kllll •• n. Ottporlltnl of Hotallur,lcol ond IIItorl... E:nrl"..,rlnc. Hlchilin r.~hno)Olleal Unlw,dly. Mouahton. HI 4993 1.
Innc h
Ductll.-ph..o t~hcn lnc of II IAI I»' "1 • .0.1 can 'elull In lOU(h,
lIowovor. In-h rvlco condIU"" . place I.... denltty ... Ierlal .. .Irinconl requlre_n lS on ol c<<>I I""' l u,,1 <:Iulan . A '<>IIr .. h.lllna l od . trurlu . . I . """ o f l he f . . . . Irucluru th.ot .. Ill be Itabl. o.ncI ntoln I_11M . . . flor ''''''' t l>o,....1 .. po. u,n In ... v,... . Lulnat........ , . U ... of 111.0.1 -111,.0.1 o.ncI IlIAi-IIf111 _ro fabrleated and powder. . Bo.h In •• r_ u. lIle C _ l t o . elthlbtt I.... cknUtl.. and ... _ b l . "" .... ' 01 0. ."" •. o.ncI doo not f.1l In 0 ca lal lTOpM e ..,.....r I,. J - polnt
I.....
t._ ._h
,._rtl...
budlnc Ht<:bIonl~.1 I. _II as aleroelruel".. 1 .rrecla on cruk P'OPOlltioo .nd I-",,""si . .. Ill to.
<:I1ae.. ..... .
(4,20 p.a.) SYNTHESIS AND OtARACTERIZA n ON OF NANOPHASR TUNGSTEN AND 11JNGSTEN·B.... SRDCOMI'OSITES: S R1rhllpltb.p C. Ptnad, O. L BoureU. Center fIX Material$ Science and EnJincerina:. "The UrU\
TMS Fa ll Meeting-13 EJeoncntal na!lO$izcd tuniStcn ... d composile powdeR of tungsten· tuniSien cubidc and tunpten· ';rcotIll lutve ~ n obtained by rapid reduction of lubmi<:ron·lized precursor oxide$. ~ pru UJIOn were Jyn!helized b)' "",t·
chemical Mi!tlI6ds. The d fcels of xidil)', """l'lIolon, particle . iu of llIe f~k rutcriaI, and of reduclion tcmper.l.ture and time lui,,", been inYe$tipte:d. n.c com"",itc powdeR IuIvc .ubscqucn~y been consolidated b)' con~entional
pre$5 and linter, and by hoi isostatic ~.. ing onctbods. The effects of second· phallC .....1CrlaI, c:onicI time on tItc denlity ar>cI final grain si.e of "'" sin\eRd mlteriili wen: delCmll ...... The hip ·temperature deformation chanctcristiCi of thele composites "'"""' aI"" been studied. X. ",y
diffractomctryand electron microscopy wc re used in structure evaluation. M icrollardne ••• denlity meal.remeR/<, and 0 vi. C characterization wen: cm~ in property evaluatioo.
Th is wert was supported by Tc .... Advanced Resclfch Pro,ram C;"'''t ,
003658·(163.
(4,40 p.e.)
Fat iqu. ot Bor oail i cat. Gla ••-Cera.ic eo.poait•• Re 1rlf o r ced with Nica lon ribera. Y. RI. akrllb na D a nd M. Jaya ra.an , Dept . of Kat.r ials ScieDCfl and Enqin •• rinq, Univ.r.ity of Ci ncinnati. Ci nci nnati. 0 1'1 4~22 1 -001~ . Te nsile tatiqu . daaaqe evolut i o n proc..... durinq t . n.ion-t.n llio" (atique t.ata ((r. q .~o . 13 H z, 11.u ti","O .l) both at RT and ~400C of Il unidirectionel 8 p l y boraellieat. q l aaa-cera.ic _ Hicalon COIIpo.lt. w... li.it.d to a .... n wi ndov of cyclIc .tr••••• , wh.r. a .aal1 r .duction in . tr .aa Caa y. 10 MPa ) r .au lted i n -.or.. th. n an oed .... of aaqn itud. i ncr. aae i n cyclic lif.. ratiqu. d a.aq. Vaa . . n lf.at ed a a drop in .tiffn.aa with til.... The fir.t . t.g . v... att r ibuted to ... t r ix crllc)d nq and reaulted i n • ehllrp reduction i n atiffn. . . wi th in th. fi r . t l ot of t b. t otlll lif • . Ttl. aecond .tage . t RT co"ais t ed of .sa.n tial l y tiber br.a k a ge. wh U. at ~ 4 0°(: it vas fiber-H tr ix d ebond inq followed by fibe r br"a kag e a nd t he ti na l . taq.. " aa t ailur •. Th..". r.su lt. ver. corr e l a t ed v ith -.ono t o n ic t ."an. t.sta and qua ntita tiv .. Mtall Odad f i ber. corrcllora ted thee. fil">di nqa.
intclface flU energies. The liquidJaIIIOrphou' Ind """"Phou~al inttl"foce In: qualitatively ditffnnl than wlutt " .. been auumod in tbe put. In addition, "'"' find IlIat the the nucleation of the crystalline phase fron1 an ltI>Otphous-liquid mizlure i.lIM>Cb men rapid than nucle.ation from the liquid or ~ ph...,. alone.
e!IUcie!
(3,00 p.m.) (Invited) MODELING T HE GROWTH O F CONSTRA I NED INTERMET ALLIC PHASES: 1. TBkAlakpt· , G.C. Joo' , S.P. Cb""" T . SandH , J . Uarbi","+, C. Palm"roa+ "nd V. Kcr&alidll+; · RutSUl U";~ity, }>iacataw"y, NJ 0811M; 'Los AlamOl Nllioul LillboralOly, LoI Alantot. NM; +Bdlcore Co., !ted Buk , NJ . Titc real lim~ epilaxial I rO_lh of NiAl, CoAl &lid TMnAl ; ntermetallic lI&IIoph&IH on AlAI by modified Embedded Atom Melhod l imlll,,\10115 "friO be dilCllAed. Molecular dYDunia IDd &IIalylic.l modell ";U be employed for the sludT of IUai .... It, ,,h\ dillribul>oal, I train relaxlliO... , &fOwlh mode, . "b ilily, iDtemce formlllOll, crillcal tbicknell Uld oobeleDcy. Recent renlu on computer s;muJ&lionl of COD,trained pb~ ba~ demoa. lralt:d Ib~ elIislente of lie>!< nuophuei wi th DnknOWD properties . The bollDdlfl conditio ... for coberent epitaxi&! ,,"OWl" of tltc5e new Ulll&fille micro&lruc\u"," will be p"'5eDlei. Some uamples iD Ibe Srowl h c>t COMl rained m&rlelllilic ph_ wiD be presented. Applic&t iC>D of these tlrndures in DoYd device. thll combine mapwc, electronic ud optieal properti.. with import ... , IeCbDoloKicoi implic.t .\;onl will be dilCllAed. (3,30 p.m.l
(Inv!~] BlllflLE-DUCTILE i/u~SITlI)J II IIITRIMSIC FJUCTIlRE BEHAVIOR OF CRlSUlS hn S . Cb"'''11 and Sisln" Tip Dopar'_D' of ~ucl u r E.Dli"a .. ins. " . 1. T . • C_riqe. III 02t39
A tran. ilion of britU. to ductil l prop~S.tio" of I "hup crock h .c .c. cr, scal 10 ob. ...ed by "'ll~ul ... dyna.aic i li., lAtion ua i"ll lUI EOib e ~ded .1.<0.. "nbod potontid for o-iron and I ..,difil d bord.r cODdition _bic.h p" noito tb. DDcluhon ."d prop&1\ltiou of ;:n. ~
.h.
di l locatlon s trOll crack- tip USiOD . for thl lI00){Oil) ulck thl U."l iton OCcuri be t ... n 200 IZI~ 400 I. Dotoilod inUl tilufono of .b. dhp la c_~u abo. the tun.tho"" _e.h .... b . to t.. tb
""""e
a
trli u ion of di l lout1"u s ith Bu.,... ncto r ~ • ; [IiI] ,lidiD' on the (011) plus. In IZI lOdy .is (vork in coli.bo... io"" _itb 1. S. . t "IT) va . hol 'u' ..,diho. tiono of the /1; .....1110... 01> to . .... ll.i,,~ of .h. IchntiOD buri .. for dl llocaUo" nuel .. tioD . b.cb .lkl into .ccount ~~ e nOllUnur s tro n d h trlhution around 'be cnck tip ;and incorponto abltJc sotteDi,,! due to th .... l and l cell ...... dhe" lIiv • • • lsnHio""Uy rodu• • d bu,i. . .bld i . in hU e •• • t.ou&b s till not full y n ti , tactory . • ,r ..... nt lith olou natlOns. 1~son
COMPUTER SIMULATION APPUED TO PHASE TRANSFORMATIONS n Sponsored by ASM-M SD Computer Simulation Committee and TMS Chemistry and Physics of MlkriJlls Committee Monday, P.M. October 21, 1991
Room: 214
Cincinnati Convention Center
&sSW" Chairman: V. Vitek, Department of Materials Science and Engineering. University o f Pennsylvania, Philadelphia, PA 19104-6272 \2,00 p./II.I
Su.f.~a Pro_ oldn., W~'<1n ••
S.. pedQnl~ Conductlon aad Thtn FI t. !;r""th.· IIZ1 LA/!!!HAN, School of Pllyslc., CeorSlo lootitute o f Technolo&J", Atl ..... . (;.0. 30))2 . "'Ietub , Dynamic. (HIl) d ..... bt ion. o f ..." . .&1 ints rt.chl ph. .. tundo.-.I",, " ue d b .u. .ecI: (I) Surfoc e pr,..l.i"s of Cu~IlO). I.e., .he de valoplHtl' of. surl •• e quU l11quld uslon, ..... 10' I t • t ... puuure of .. SIlK b.,I"" . . I,lns , (T.) """' ... 'blttn." Inc<... ~. lo,l rHlu>lc. lly upon . pprooehln, T. In .,rUM nt with ,he predic tion. of _ n- fi a ld tbaory, (11) IDtedodol wenln, driven by . db. . lv. Intsu ction s bet"un a n1c~el-"p l"""cad on,o • iold aubat.ato , with . .. b. .quant plu"c defo c. . tlon . for _ Hon of a connactive naclt of . ' OIIle di . . nalona .nd fo rc e VI . dh t ."ce hy .. or.... upOo du ..ctlon; (ltl) o". et Ind _ c ... n1. ... of upulonJc conduc,1Yhy I t ,~~ (lIO) a urbce of Ca F2 .. . <... pl . l ture I IIn1Hoantly lovar 'hen t~" bulk; oruI (Iv) llechlnloes.and dynl .. lc . of v_POI"-f'h". "pluxy of Nt fil •• On Au( IOO) uhlb1tln~ In t a rt.da l . . t a rld • • bln" I tuine dh yH fll .. iro>vth and Stra ns kl-Kraa t.nov S'"",'h .ode, . nd c,,",pl .i_ . On .. It~ the Ic""'h of (Ill) sold HI .... depo. 1tecl on • Nl(IOO) l uba trate . 'Supportecl b' V.S. OOE Grut ~o. FCO~86E~-~52H.
(2<30 p .... )
(Invited)
DETERMINING TH£ RATE OF PHASE TRANSFORMAT10NS BElWEEN U QUID, AMORPiIOUS AND CRYSTAU.JNE PHASES OF SILICON. MaJtia H . Grabow, ATkT BeU l..Iboratories, M umoy Hil~ NJ.
n.c mellin, and soIidilicalion behavior in lilicon and germanium uhibit • Ilr&e
"'at """ •
SciellCC IDII Enpnccrin, DepanrnerI~ 2t.S hcridan Rd. E _ Q.. 6O'lO8·3]0&
AlDIIliItit Monte CarkI simuhlion$ "">'CO been perl""""" 01 0011&-_ ~ption at symmetric"' (002) lwisl boundaries in bicrystall of PI(Ni) and Ni(Pt) illoy1. ~ the ......... is a ~Ic phax JO!id IOIution. To caJculale tilt cnercY t:mboddod 1101D nx:thDd poICntiili wen: employed. A IIUIrDU1ltional cnsc:mbIe of _ _ wu used a fWld cbernkal palCIIliIi diff_ and II>talIlWJlbor while !be """,hen of.1OmI oftbe dih"~1 opecics and ~ Y<1lumc _ aUov.ed 10""""'" 10 obtl;n the nct drect of mainliininS • """'''at pm!....... SilD,dati"". w~~ performed at 850 K and lwist an,l« ranlin. fnIIn tY to "" . Special IUUlUoa WII paid to proper equilibnltion prier 10 IVCI"IIin. and tbt choice of "'" Iy.tem &itt 10 avoid tIIc influence of !he periodic botonduy tondilion& employal. Oa:illllOry COfICeJl1QIioIo _II ....... dimeJllionaJ ..pe,"1ion wen: observed. Compari$Oll of. thc:se ~1U11I willi limul'DonI ..... u peri .... RQ OIl otI>er alloy1 il
""til
ol_.
""'"tu. ..
(Invited)
In . . . t.olal p .... ~a T . ... afc.-- ,. cn.'
(4,00 p .... ] Monte C.rlo Sbnul.l;nnl vi SoIlite- AID... s.a~lIoa .1 TwIsc Boonlbri..·: D. U4Iet IDII D N Stidme~ Nanh....1lCm Univemty. MlJeriaJs
number 01 InlClUtini p/lc1lOl"hou. pl.uc Jb"1X:IWC thar Is very different flOl1l the metallic liquid state. We ",""" u$Cd molCCilLar dynamics computer limularions to !.tudy p/IaK nnsitions between the condensed plwcs of ,ilicon, usin, the Stillin,er·Webcr potential for silicon, with calculations pesfonned on special pwpose parallel pmceS5QT1.. We ",""" .!\Idled the structural c hances that occur IS ~ I~cm 1rWIS~1IfI!'S belWllCn the liquid, amorpIIous and gystalline SDtes.. The liquid/aystal. l"Iuidl~ ar>cI omoopbow*'Y5Ial tranlitioJu wen: all found. 10 be fust order•• nd the nucleation kinetics yields information on the
dilC\lssed.
( 4,20 p . "' . ]
T WO-DIMENSIONAL PHASE TRANSITIONS ASSOCIATED WIT H SU RFA CE MISCIBILITY GAPS: :r.1Jlt &lid P. Wynbl<, Depu\met1t of Md&ll prpcal Etl&'ioeeriDJI &lid Matm'" Sden;te, Carnegie MeDon Universily, Pittlborp, PA 15213. Tbere b ne been a put deal of iDtelest oYer the pall few yeul OD the IDbj!ci of two-di ml!lllioul phue trUlJitioDl . MOlt I tudle8 \n lhi. ana ha.,., to<:lUcd oa . ur!&ce UCQulructioa ud order--dilOlder tr&lllil iC>DI, but t hell: hu bt.efI reldi.,.,]y little &Iteltt>oa paid \0 t rllDlitiOll.l NIOOoted wit b l ure.ce mildbility Ppl. We bue _ t l , l l pdied nclt itusil;OlI' by btK b compu ter s;mulilion &lid ezperimcnlal methods:. In thil preIeII l&lion we win
ua
(4,40 p.". ) ATOM IC STRUCTURE AND DYNAMICS OF MARTENSITE-AUSTENIT E I NTERFACES: S. Chen, f.J;. Qw &lid J.A. Rilkin, CeD ter for Matm ... Simul.tioD, liliti tnie of Material. Science, Un; vmily of CODne<;ticut, S"lm, CT 06269--'lI36. The Itructure of tbe 10.....1 enerv ;nterlace between &II hcp aultenite phase &lid I n fcc marteuile phue of similar atomic ~olutDel b.. been
14-TMS Fall Meeting tbe t"o perl.ct
IwO IIr uclurea
" DEVELOPMENTS IN ADVANCED AEROSPACE MATERIALS II, Aluminum- and Beryllium-based Materials Sponsored by the TMS Non-Ferrous .Metals Committee Room: 211 Cincinnati Convention Center Session Chainrltm: Mike Zendalis, Allied-Signal Inc., P. O. Box 1021, Morristown, NJ 97062-1021
notched laminates to characterize the h igh s train r a te f racture of these mat e rialS. whil e optic . l an d s cann,nr electrOn microscopy were use d to identify the lIIochaniSl!1(s) of laminate faHurc. (4;00 p.m.) PROCESSINC AND EVAlUATlQN OF AN ALUMINUM METAL MATRIX lAMINATED COMI'OSITE" D B La!!!! C. K. Syn. K. L. Ud~lt lIWm>
CI
£XnIIO'n
AI-Li dlQy3 =ntalni~ Zr ofte n s !>ow unrecrys t .. Ulzoo IIrain a tructuno .. ith • ~ crystallographic textu"". TIle ....... reoei.,.ad 2090 IJ-Li hot: rolled pl.-til _ cold IoOl"ked along the 10l>!litudi",,1 direction till 95\ .... ductlon In thickness. Th8 ixluno till 4,000 houra. TIIe.oged ~I!S .... nt flash arnea led at IOOO"F/60 ~. 'I'IIe .. tn>n;jth of tho .... terLol OIl". STUDY 011 ntI! P..oP£RTIES OF ST .... ILIZlIfC OF M20\10 >.l - Li-<;U >.Iloy, Sh.nq-Lonq la • • o.p.rUlant o f IIqineerir>;. Notionol ContUl univ .• Chunqli. 'I'oi ... n J2Q54. RapUblic of China.
n.. .... ted.l
of ""20\1Q <>Iloya l\ave tIM> prabl .... of low du<:tilHy touqhn... . Spoci.lly. the _ch.nicol proporeiu "Ul h.pp&Il " 'lOU' dec. y undor prol""lled hi9h-u_ratur. "'PO""'.' After ~Ir>; tr .. tla&nt, • opocial otobil.idn9 tn.taont con iaprove tM touqhn . . . about 2~. und. . expo. un tor 1000 hours . t lt9"C . .... _ quenched M~Q90 . lloy -""'<" • hiqhly . nhotropic. unre<: rY 5t.o llh.., aieron.-..::tun w;.th luq. p. ncoko-. l\apod qu1n •• but P"'nlU ...cry.tolli utj.O<\ . nd o ~r.oin 9'''''0. .. Ill 1>0 ab •• eve4 dudnq """"9i"9 . aulld on u on ... i ..ion ai croocopy ('rFJtI otudi... , tM otronqo.onlny i.a c.,,_ by t M precipitat.. of I' P' 13Li). (.1 2 CULII ~ Y' (Al 2CuI. P«>l",,9*' hI9h-t_rn"". oxpoo"". v 11 cau.. 0.. <:Of.non'r>; ot tlw •• pro<:ipitot. . . .nd fono the 'I'2tAl~ C\lLI J I preelpit.Uo on qqrolo boundar.... Pami .... U"" or tr.ct"" • •"r toc" " d n9 .c. nniny eloctron .. Icroscopy (SJ:IOI rov.ol . thot • tr.ctur. __ uni.ti"" £rooO non- "qinq tu.tDont . _0 pr_~tly 4u.c:til. froctu" to Intu9ranu) • • dola" ln.tlon tuetu" . tur · 9 in y. ~ru!
Tl
p:oo
Unl ..... ry,.St.nford. CA 9f)Q!j.
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"W","" ~ und.... the . U$pkfl. oItho: U. S. o.-p.r\1\¥I\t 01 Erw1t;y by 'h< Lo~ N.tioNI Labo... tory uno:!« ron"..:t No. W·74(15.ENG-t8
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HIGH-IIODIJl.US .....1"1;11!"'- l"Cl\ K~'I' SINK AtID StIT .....PLI_ CATIONS, Fritz Gr.nli."It. U niot ""i'l'l•• " llru. h Wel~n, Inc .• 14710 We" portAq. ~ive< South _ d • .E:lmore. 011 4J416 .
A L I G I!TW~IGH'I'
I'IIIllIII'JIl' (F _ MOtISDd.I.lL\TICII aww::rmusnC2! (F 2090 1Il-Li 1IUOI. D. !I.Oi:z)o. an::! O. s. Ex-Said, i.o).:>la ~t Univenolty, i.:. ""IIei
~nSi_ "" St.nfo
Motot M.trix lomiNl<'d Compositn (MMLCs).", .... t<1iob u. ..hid! two 0, ""'"" diffmo-n, .......1 ron"lninl Lo,......'" ptno bonded tOJdhor. !'ftv;o... WOIk ..... shown ,Now «>mposi\e .... t.....1s con pc»$tOO urriqur ~ thoU .'" superior to t~ th< ehol«: of I.mino.., moteriols. numb", of t.y...-., tbicl;nus 0( IN Lo~", IDter/ad,I bood .tr.nglh. eIC . .... PO" 01. Lorll"" ptCpiOm in MMlCs w..... ~ beft, .,..mint", Lomi""","..,mpoood 0/ .It...... ling 10,..... 01 .n oluminum .Iloy ond a ~p ..... fonood oIuminum mom.
(4,30 \2,00 p . ... ) TIll!
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1Hr: r;IQDOCli "1UCIUi'I1IIl.mI HI) 1'IO'EII'I'Ii!S CW Al-5i-flgQVS1C120P-'J'4 !HEr URII .wnt'ICIAL AGJ)(;: Steven Itltt am YiroQ Sun . Brown univeni t y, Pro,!idence, IfIOde Island, 02912: and iifi!:AW walker, Mvanced Cmpo!Ilto Ibt.erials Corporation.
Greer, SoutJi 61mU .....
2%51.
A 2ClO-pound 1J-{i.7 SI-0.950 Mg-an\c.o.l tasu s how the evolution of the ... trh oucroostruct.u .... an::! o::r.p:ISlto po:<:pI!rtlea upOn artificial "IIi .... .
A r .... Uy of boe ...""I-.. uix _ s i U. ue COlOpOo.ed of .In.,l. crynu bery lliUIII ooido (8«:>1 portid • • di.~ ro. d in • !>eryll iUIII mUol .... ix. iIO-Be<> l'IHC' o eJe cOlapOo1t. b.o • • n ""_ cellen. Combi.na tion ot the ..... l concluctivity, co.oHicient of ther _ _ I u ",""".l."" {c·nl. "",""ulul Ind d on . Uy. 1TI. _ch .... .lcol . nd th.r ... l properti.. of the compol i te will !>e "". c.lb.od, u .,H l ' .v.ul .. ro. poee . w li.c. tion. lOr tho caopo. IU.
ENVIRONMENTAL EFFECTS IT TMS GDrera/ Abslract Session Montby, P,M,
October 21, 1991
Session Chairwoman: Ann Sunwoo, MS L-342, lawrence Livermore National Laboratory, Uvermore, CA 94550 (2,00 p . .. . ) fHE EFFECT OF SlACKING FAUlT ENERGY ON THE TRANSIENT CURRENT RESPONSE tN Fe· Ni-C, AUOYS: SK V8m1a. J.C. Arroyo. A. Advlln! and A. BronlOn. o..PlI'tm.nt of M. laUUr9icat and Mat. rlllto E"Il!nee r;ng. Tho Un;'Gl'sity 01 Texas ., El Pa~o, Et PlISO. Texas 79968·0520. The scralch tealS hllVe be.n ",,0<'1 to stuc!y tM COffoolv9 .........,iDr ot Fe·Ni·Co" alloy~ ... ith nlcket con.ents of 10.7. 16 lind 27% by weillh, ...IIile lila dlro"";u," conoonUations IIoaw bu n held .1 a «InSlln. value of 16"«1%. The a!loys COlI'" a range of nacklng lau" enerOl' (SFE) valu" from 18 to 49 mJlm'. The lEt.! sludie5 _ e perfonno<'l on IIIe saall:t'lid $IIIlIlCeS and indicate lila! the tran.ien1 c..-,em .espDr1 •• is .1Ia1ed to SFE 01 the alloys. The transienl e'.IIIene re~nse also i. dcpen~nt on the UI:lC1 nature o( th. dislributlon 01 1M dislOcations in the microstl\ldUre-s. A DOIle/a.ion has been mad
.ew",
This research /las been supported by the National so.nce Foundation under the grant numbar RU ·a80297J
(2,~O
(3:]0 p .... )
LAIUIiATED COI4POSITES . WITH IIJPROVED TOUGUNESS: L. Yo;;t Ellis and J.J. Lewandowski. Depart~ent 0 1 Uate~ ~cIe nc e and Ensin e erins, Ca &e .estnrn Rcse rve Unive r sity, 10900 Eucl id Avenue. Cleveland. Ohio 44106 . Laminates conSisting of a layer(s) of an Alu~ i num matrix compOSite reinforced with SiC particulates .nd a 1 . y e r( ~ ) of a monolithic Aluminum alloy h a ve been produced via extrusion Or hot pressing techniques. Fracture toushnes s test s wOre conductod On laminates a r_ ranged &uch that the crac k COul d slmultaneousl~ propa_ g . te through both materials. The presence or the unreinforced layer improved the toughness a nd ret a rded crack growth. Tbe efrects of l a yer thicknes a and bond strenll"th will be discussed. Instrwnennted impaCt tests "'ere a ddition a lly perfonned on both notched and Un -
Room: 300 Cincinnati Convention Center
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COIIJIOSIOli
FATltuE AND lUCttOClifJIlCAL ~!:ACTIQIIS I" A IIIClI PIIlITY F~laC.12 11t AUSTENITIC SHEL. ~, Sh~n'Fa na ct.en .n4 lobe« F. W. I. Oopart,..,nt of II
To In_otl,... the r . latlonlhlp "bet" . . n toeros lon fatl,;_ (CP) .nd electroche.ied (EC) e• • ctlona. CF cuck ,rovth .nd EC *"perl _ ,,"" won earrl . d out on • htr;h pur I ty FelaCr12Ni au.tonl_ tic .lloy In dourat.d 3 .~ ' NaCI aolution u"","r poUntlal con
ti_.
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KIGH rut.1T't nl .CUZMt t.tISTDlIftC AU.O'I DUt.1': 00lJ:tI$10II' r ... · TIGUI . ~. Sh)'\'&n.r.~ Cbon ....... r . lIot . /lopt. o C llech.n l · ul £ni . . ..... IMc"",,lc •• Lehl", Utllw ••• It)" . Iothl.h. .. t A IIOU
To b.t ... unde •• •• "" .!cr_cho"h. . of co.ro. lo" fotl,,,,, (etl crack , ..... th I n ... u.obl ..... U"IU. . . . . 10 . u,o . . lotlo".hl po bo.".." CM cuck po th. 0"" tM W'Idorlyl n, . teTootT""tU'. weU l"".oU,o.od for • hi'" pu.tt)" rol . Crl2lH .Uo), c•••• " I" • "" .. .. t . d l . ~ ' ~ .Cl .oluU.. " a t _700.Y SCI . Sp.cbl .... "UOR .... .I .... n to'M . rt.e' of pH w.h.. . TM cuck p.tlt. van lden tlc.l a"" tharoctorh oel b), quul.clOlva, . .. lth about 30\ bwn40ry . utllllll at din. ( ou a l hacUon) , .00n . "" ... In I ...... pi! ¥at .... (2. 0 '0 , .~). bu. "ldI ....... I... , •• tn ..... noln _ . , eracU", o. pll-12 . rr.""Conood ....." . ' . . n .... I .. b)' forll'" v" .... ntloll)" co~l.h at pll-12, bo.o. leu <_I . . . . t plt-2 to , . ~. no... ...ulu. .10<\1 vl.h 'F ..... . 1. . ..... h. .l ••1 6&'0. '..,port h)"eI . ..,." e".U.I._n' . . .M _.haRIo. f ... cr_ c . .ck , ..... tlI In.M oy.td> .tuelled. r onoodo .. o r ..... " .... t •• "1',.... to to. onl, one .. f .... foccon ,,,poM l bl . rOt o""letl.· Mnt . Cu i .. Ind noln bo
"t., ...
The IliJIfide stress COfTllSion er~ (SSCC) bthaviois of API X60 slHlt wI'IO:h are Ca--'ded or C.·lree lI.... e been investigaled. The morphologies 01 indU!l:ions _rt .umined by I SCII/VIing eledI'oo mlcroso:lpr.J ~ Jhv IXlIIIposiriDrw 01 U1em _ t IJ\IIyzw by _gy disperwion X-fay specIroscopf. Most indusions ot C.!,,. steels are llongaI«I !.InS but almost .. the ~ 01 c.·added steels ....1 $phefolclimd CaS or Ca(MII.S). The SSCC rti!Jstar>cv 01 sleels in H S UIur~ WACE sot/OOn was .....wate
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or CUl tN IJ!:Fi~ ntG AIlOI'!'IOI'S 01' nIE HICIIOST'UICtlJlOZS AND U.openlu or U ALI.OU, $ K. ~ I u, II . " 0"', ' .1. """9, I .'. 1OIIOpt . Hot •• £"9 ' " Jole.,,"9 u" ' I~y, Ch_fI9cIo.I
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_~ o r 1~.""I"9 I . . proponl ... _ I l -"~ ~"".v (c • • t..ol _u AIIcI_ 0<1 up.or.uly o~ c-bln" u n on.cop l c ob •• ",•• I.,n ,,"ro ... d. udn; opticU. Icoo nl"'l .tleuon and ~ro""",i . . ion . 1.CUon . i ...... cope . 'I'_""U. too' roouiu h.v. bo.n correl.ted .. ith .lcroot"'.'.ul obo. n u l "". -rno . . .. h o f tho \"'p<.,vi"ll ""..... Ion ... h toneo by .d,II"II U 10 . too
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1NlEtNAl- 11U11UM AND HELIUM EFfECTS ON nNS11...E PROPERTlES OF AIJSTENIC STAINL.ESS STUl.-'> AND SUPERALLQYS ,· S. L Robin..., Sandil Nlrional Labomoriu, Uvermore..
CA 94551-0969
The effects <>l intemal airium an;! he/iumoa aen!oiJe pupeni<::s wen: $I\Idied in I0Il iron-based wpenlloy II modified "'· 216). II ... U u in IOIIraled. f<:qed and heavily _~td au"cnitic 1\linlelS Mecll. The 1~1I$i1e pn:>penies chan,cs .. en: chara/;tcrizcd at room Ir:mpet1O,..." . Oucci~IY deauscd CCfllinoously ,..,110 he:liu.naa:umulalion. Yield ~n~'h ino..-rn1iCd OOIldn\lQllSly in doelu"cnitic _Is. but no ineli"", wtlhia thc microsIn.oc1urc. The fACan ~ sin>U.v. IS he:~um ifIduced ddomwioa rwiMinJ; catISCd aoxdented foil," in all mueriaIs !CSIed.
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Tho IMC .......... al codrincd .f<>5ioo.corrooiooo '" ""lei oed. scain/ea:a .....1• • nd Ni4lo~ SUptQJIoy II h;p ~IDptfINm ""'" ilollUlipn. lteJl""~ ",., inilillC-tt.l. e' ......... -wf
u ••o 1' ••• ) N'l\ICAlI(H rE !IJI'.ICl oentll. CIKEPTS 10 rATlQ( CIIJO( JII\TIATItJI: EmCTS ClNTIIllBI ~1Cl ()(MICJt IVCTIVIfI' (JI mUlf LIfE : T. S. Srlrolll nI f. W. 0u'Q. Deo/rtl!Btt d ~iaJs Sci-.e nI in;J ireerll'Q, ~ I,IlI'.et'$ity. E.IfISUJI. ILlIif'Dis 8l1IJ3
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'11'tI ... work "'!JV>rted by U.S. IXIIl
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DE-Nl)4-16llP'10199
FRACTURE TMS Gen~ral Abstract Session Monday, P,M. October 21, 1991
Room: 206 Cincinnati Convention Center
Sasion Chainrum: Michael C. Vassilaros, David Taylor
Research Center, Code 2814, Annapolis, MD 21402
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F.tJ\I-" cr.s;k lnj lJ ~tllI1 rutlies 1$ slT"}le Cl')'$UI sll¥l!l" IIfI"! J)eriomu:! in the d OIW£I" .-d tnmlne '" n::on~. lnltJ"'JII1 fA ''''lop! O'rl$ ..as di!tEd.«I by , sumi"J ttmelirg miatJ5Ol¥)l' uslrg , SOIECI,J tIIlO:a'tatr1i'lJe. nee ga~ IIfI"! ~ ~ rtf their SIttr9 ~11l1 111 cle/fl sll¥l!l" SU'fa:.es. EIath IJoISf'S rault In tte ~ '4tlgR life \rder the WI'! testi"J (:(nflth:t!J. Qw!n ~ into the slip bn!$, oItlJ, trnRI~ <:be! 1'1;)1;. ntis ~Im c.J'I be t'l(l1.ire:I by the lIU1I l¥gl!l' IIDIIic radius d tra.i~. II! boi lM filii. the n>V9 chniltl'J)ti(J1 d ~ g8$es 0'1 c ~ 51111!'l' srt«a I~ to ft!l.aId sJ.ip mI'Oibility ¥II tea sI'O'Ur 'ltllJ.je life. ilecb:irg tte snQ ~I l'toICtivity by allaylrg ttE l\1-.er ufQl'l!glm viti! g::old It difftlW'll o:rantraiaos n!:5U11$ In 0!I'fWV:IelI fltl!1Jt life In~. lhi~ dlsl!rt.ltim ctwly 1I'dIc.rtes tile JotoU>::f d SU'fia! rNCUwity in ctntrol t irg ' 4ti9-e CI1d< initJ.Jti"". ptt5oI!ta
( •• 00 p ••• ) 'OiE sec .EHAYIORS OF cr.ADOEO AND Co
SJetI and Aluminum Research and Oevelopmtnl Departmenl. China Sleet Corpofllllon. Hsiao Kq, Koa/Isiung 8 1233. Taiwan. ftO.C.
{l ,og p . • . ) TIft UFtCT " C AAI~ SI ZE 01' I'RIoCTU ~! , 01SI.OCA'!'I""-~ItF.~ ZOWF. I~ P JC))II' cw PI Nt'I'E CIlACJ TIP, Sonbol> lA., Oopt . " auri al. S.l ence . N•• ;on . 1 TI ;n . Hu. Uni" . .. lt" A,i nc h •• T.i ..an, .• n' Sh.,.-Toun. Shiue. Toloc_"n i' .'ion Lobo.no"'" Hini.", of C_nic •• iono . Cnun._Lt, T.i .. a•.
Di.locatio ... pi1c ~ up b. . ~ .n tini •• • re. k .i p ond lu i. bouftdu, .. i .h • • i.loc.ti .... _ f . . . ."". i. i ov... " . " " lb. "U.' i nn •• i" f •• at tho no.k ,I, . n. . . .U. '''''c rncr •• i ...... t~ , u in """"d0<1 .U lIIoo"'~ .pplif'4 Un" i o I. "er t hou .100 , O(co.-I(.I.) . ~) • • ~ • • i.I"" .. i ..... •• ill.~ h_ .he . r .c~ tip .. ill 'ho"0t6oc,. Th. ot . . . . ."""... " .. i .... "" 'K ,u i n _Rd. r , inc r.. ... ..itk the i ....... in' , roift .i •• bu. In ........ .. it h .he 6 •• nu'nJ d,.loud on_"" .one. 0.. tbe o.h • • h.M. if ' he .ppli ed o tt .. ; Is 1_ • • hu o r e1u.1 to lhe ' O/coo- I(c/. ).k), no . u ... conc oftt ro.ion u i ... <>to th • ... in """060 ' 1 , Ho _y~ " tbo on ... int.no", f.«o r .. tho
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crock lip i n.. u .eo .. i.h .h. in..... i n' di.loud"..-frn '0". bu. i ner..... .. ith .he de.ree.in• • ,.in .iu. Thi ..... ,)0. ... . o.ppOcud by " •• Ionll i d.n•• Cou.ncil , Tai ... n.
16-TMS Fall Meeting ....... oIItoioed ..... it
51 .• ')
I ~'~O
THE INFLUENCE Of GRAIN SIZE AND PARTIaE SPACING ON FRACT\1ItE lHJTlA"ON TOUGHNESS. A wpjdurtnsl:! IlIId W.M. Gam_. Jr., DeputnIc.III of NcWl"'lical EnCiaccrillC and N.oIII::ri.ab Sl:ie1leC, Carnc,k Mclloa Uflivenity.1'IIUb
won
M,", been illYCSliplecl the effecu ol ...,.,xle 'J*'inc and prior .uRellite paln Ale 011 the frJ.ctun= 1OUcbne# of. O.07M4C-9wt'llNi lied. TheM: twO ,.,amolCrI have been varied independently UId &te. the QKk lip openin, diJpIKctnem II l'racnft. Iw; been detennincd ... tunecion of inclusion spacint; for two .psu:nlte crain lila (13 J,lm ud 100 JU1I). Our ruullt indicate that II constam Inclusion voI_ frac:tion and AnIll crain site, 6tc: inerases with iDdusion spa<;in,.
1n 11111
JCo. unlil Xo IIIIdIes SOftIe Q'itical vaJIIC Xi;
...
hen Xo Is pWe:r than ~ then ~ beeomcl illllllcpeftdenl of Xo. for IlIIIIII Xo lIK:rcNlnC the pin Iize reduce, 6sc .,pi1iwIdy bon .,.. aiz£ \w; • very IIDalI ctr_ .. Ii,c II ~ XcI- 111 Ulioo. inaasiq; crain llizelppCln D iD=ac Tt1ia..at _ ~ by the NSF . . . . «M\CI'XI OMIt 9OllS56 and by !he Armr RawdI OffICe ~ ContrKI
Xi,
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The pIU'IIOM 0( lIIialall: ill(I pn:!ICII1 ~ .. ~C the dl'ta of il\(:Lusion Iyp& '"' the frloCl"", lOU,hncu (X,..) of HY I SO l leei. Conlklued Ife four 11«11 a)(IWnl", Itftc suLfidt 1)'peI1l00llSlUll incLusion ~ fnr;1iaon. 111 one heal the sulfldcs .., MIlS. in the ...:ond the IIItrldcs .., ~ and i. die IIIird &r>d foortb the sulfidel an: TItCS. JC.., for tho be.aIs ~ !he MIlS panicles IlIId IIIc !nI:R widely lpaced Ll101S panidCl ... , boIIl 200 Ui{r.i and 320 bi.flii rupc!;livdy. closdy spICed TItCS panKltI.., _ tUiSIUII 10 vOO nlldcllioll tIIan Ihc oIhct saIlfldcs .IIId tIIis _Its in K,.. vaJlICI 0/.20 b i.Jlii .IIId soo t M'lii . willl the IDIaUer tiWlium addiliool ltaclia. 10 !he hi&her 1OII,hncu value. T1UI v.ort ..... supported by the Armr ltetcardl Omce ~Dder ContrKI DAALO).I6.K.(]t~ ltId by "'" l.atJote SIUI ~y.
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MIXED MOOE /JIll FRACfURE TOUGHNESS OF A 2034 ALUMINUM ALLOY. X!&o,jo fen, and J. P. HiM. Depanmenl d: Mccllanical . nd M. lCrials En.iMCriftc. WashinJlO'l Stile UnivCl1ity. pulhnllo.WA 99 164-
2920.
The n'i1tecl 1llOdl: /JIll tracnm: bcUrioroil ~ 1I,,~al loy i,Wdied The I'rxtutt. ICfJJIIncsI is evalualeclllnder various 111'113'"11$ 0( tnOde m load;'" COII'I(IOneftI of !he alloys Mit! dilfuatt I/TtQIIntI of MIl by .......1 of • modirlCd ~ ICft$ion ap:cimcoI. The raulll)how I.... for IOfT'e aUoys 1101: cririctl KQ .... _. !lie on5cI of crac:t; ultllSloft ~_. peal vaJIIC ...-hca • smoJl amountof lllOdo II I load componenl is p - . The fixto&nphy and, mictcmoI;hanicai analy$is also an: pmenlCd.
-'- ' ""''', - _.-,.01_-..... ................ .-....... __"""'_ .......... ,<_.", ,...'-,....."- _., ... .......... " .. -"-- ...... ..... _ . " ... ...,'. . .....,...,-...... ... -...-,,,,,'............... ..... ......... .... ".-- ,....
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TlII CYCLIC nU-IN InSISTAHCf ..... 0 fRACTURf IEH ....... OR . Of AN AlUMINUM ALLOY METAL ... AnIX CO""OSITE b~YI Au.t11 ~a, .1Id U .
U I 3972.
(4,20 P ••• ) I NTlRPAC IAt. rMC'nlRE- TOIXlHNrSS or 'nit: SI LICON/ClASS kM(lDIC IIOtID, D... 14 I. HUrd . 4 \ 4 7 St. p~ . I} , II I.",..,polh , two ~~414, .,\4 W••• c..n..r.icll, UnJ. ... of 11......... \.0., Dept. Ch. . I n9. , !!.ott. "'1" lSI C_C.1 ........ . , 111""....,111 , "" ~S.5S. Ifttul klol fu ct" •• ~ •• of .nocIleally-_ .Uieon/ 'Y'-" 91 . .. bil.Y.'" ...." _ ... ru.-od by .hin9 I~ ...Un9. ' .. II _tll1,,_ .. 1"" . .. _ f ..... 1.5 to 7.~ _. I t 11.0. _ n pnIJIOIId ohlt bot:!> warhble euck.up blWldno _ til. 51 •• .....,. of "'1,ld l"". u..... I1~-ln _ , COfI(lu. . t .... ro 91... _Y oo ~tr 1buta to tchod ctlck C>rl d. t1110 conU", . .d"" ........ tNI pr.M"". ot ...... t.c&\.(;,I.lll-.t..oxP • ... k.tIp at lM point "" • •• ftl ct".,-tou¢u'u. I. _aured . vuhtion of i.n.tartacl..al ..1141>11 .on .. pro fn . . I. pl.onno-d by judio!..... MI.ctlon of _dlno u •• • ,.". nl"lti n9 1'1'<>tU •• ...Ill be cb.or.oct.er.i:te
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fbis ..ut w pponal by die National Scicnoe I'oIindat\on undu GrIllI DMR
(2,4051 ••• )
THE EfFECf OF SULFlDE TYPE ON lKE FRACnJ1U! TOUGHNESS OF STEEl. HYI8(I. J I. Naloocv Llaoite SlUl CompaIIy, LlIrOb¢ P.I~.1!Id w. M. GarrifOll. Jr.. Depanmcnl of Met-'lu'lical EnJineerin, . nd Ma!erials Seknce. Came,le MellOll University. Pial buJ'lh, fA IS211.
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In t~" Inn'tlgltlon, tile prop.g.itlon 0' In t,rgr.nul.r c rach IR .. tert,,, " l UI ustllt 1illy tva 41_510011 IIICnlStl1lCt"res hiS been ev. lulled . Sew'r,1 ,~t IIIt, rll ls , Incl ud Ing cOOPe r, slllcon-lnln, nlck,l , ud I nl'~tl .11.-1_ InUr.Ull1, line been procel5td to produce .lc nlstl'llCw~$ WltII ~Tllns possess ing IIrgl II I _ t,rs relath, to , hee t thIC~"'II. Irlt/l ",,),1"9 ... brittlellll!nt tondHIOIl$ I n Supporttd 11'4 unsupported fil . , the defo .... tlon 'nd Incture procenu II.v. been recorded . The resul ts daIIonstnte the IlIPOrhnce of n"~lt _ ... lghbor orientati ons of grain boIIndlrfu on crlCt pro~gUlon In two dl",nstonll IItcrost .... ct
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(l,40 51 ••. ) C2.AQ( ' ACZ WAMnoN IN TIll! IN'I'EItI~ Of' AI-U lIl'iIO s.-u.Irt.ES OONI'TtPI'!D AS A I'UNCT1ON 01' AmJED LOAD BY IN srru X-RAY TDNOGII.AJ't(JC WlOOSCOf'Y. A GO!QjIjr T.M. "-iI .. u . SIocl, ............ ~ Racwd. Lob. . . Sd.ooI ", No«rioIo Eta. a-p. boot. 01 T.......,., AtIooCo. Go\: J.l1. ~, DqC. 01 No
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IN-Srru TE~ CRACK PROPAGATION STUOY: W"oid ZillinMj. Willam W.Geroench, Dept. Chern. Eng. a Mar.rial$ Science, Un/versI1y of lllionesota. 421 Washington Av ., 51::, MiIlnNpois, MN 5$455. CfadI; tip dislocations int.raetion. play I INding role In the ffactur. miCromecharlies of seml·btltll. mlt.rlals. Ona of
the molt Lmponlnt phenom.nl determining the ductlla var.us brl"Le behavtor of luch ma"nlls Is dilioeaflon emiliion from the track • . Ln-ailu TEM In\lQ1!gation gives lhe opporlunlly for di~ ob8ervlUon of I propagation Ctack Ind tINt involved daformatJon procelle.. From the exparimefll pre.emld tJ.era. II WI. found that the number 01 crick amIIIed dislocations corrllatlld -.II ..." I tract tip opening rno6t L modIt. Ana/yIis of IIlJI trace. ~ the {321) JiIp plana type to be identified which ' ubsequaouy hu bean utillz~ 10 modal the Irad..... process.
TMS Fall Meeting-17
FUNDAMENTALS OF CRYSTALLOGRAFHY: A TIJTORIAL n Sponsored by ASM·MSD Strudures Commil!«
Room: 2CYl
Monday, P.M. October 21.1991 ~sion
Cincinnati Convention Center
Chaimum: A.C. Jackson, UES, Inc.,
(2 , 40 p .•. )
4401 Dayton-Xenia Rd .• Dayton, OH 45432-1894 11./10 p .•. , IIOTATIONM. PItOI!lLI:HS: 4 5432
A
G
lld.Qn,
II£S,
o.oyton,
ANOMALOUS COo\RS£I'IINO KlNE11CS Of COH£RE"T l' PR£CIPTf"res IN HI-AI AU.oYS liT I.CNI VOI.UJot"E nw::nOHS: A.. IWItthwan and" .I ArddI. Dt-pertrnent r.I loIalUUls Sdenee . Dd ~f1n«, \JnfIt<: ....,. '" c:'alllo". Lca~ CAIIOO24·1595.
Oil,
In crystall09rphy there are . "umber of not at ions u s ed for planel and dlr. ction s. H.. ",.,,0"1 1 and trl
Clt rrRACTIOtl, IL U80l
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coaS\allI _ _ bel ........ 10 and 160 MPL AI looooc, prinwy<:r«p C1II"VU displayed Clsu I ~ iuveAI: IrMlknl c:/IU"::Whlicl, bUI willi iocrusin, ~~ &r>dfor dccreuin, JIIUt, dtil clwttcd 10 ",,,,Jar SIIp I bcham. Durin, stUdy Wie ~fOlTllllIll;:ll 1M I!IIIcriil edtibiJed powtr law ClUp I1leS v.idt • WUI ClIponent 0I 3.S .nd acliv.tion tn~ of 28 kJlmoI. blilW steady I t.1e crtep r.ttl .... ere evenlu i lly aLtered by , he Olllct of dynam~ n:c:rystalliuriOll, .... hich wu CCIIIII"IUr observed to oc:cur by bullin, of the oriCiftIJ J1lin boundariu, IoCCOmpilUed by subpain fonnuion.. The =pt spocimt.nI displayed IICdlacc ~ for _ at hip 1t=Scs and low 1mlpCr&WrCS. eh&r\,u.Io at inm:asin, tempcnWre and Oeausinl _ .. .. a aniformly ra::rysWli:ood 0DU1IC &nined ~ v.idt ..... vy crain bouncIIrieI. The dyllimically I"CCt)"SllIhed pain Jiu ...... founcl lO cIocn=ue with incJU$i.nC ouns and wu hdcpenclent 01 lUI ~ .
ot Illinoh , IJrbanl,
Oltfuc:tlon by x - r.ys, eleC trOnl. "nd n "" trons is • eo-on _thod f or stUdying _ted a ls. Tha principles ot dlffu ctiOll a r e rev h ... d "ith an eye to .... rd the co...,nal1ty o t the thre .. type. o f 'Ource.
"""_run,
Iw>euc. of cohen!Dt l' INbAn ptUJplt.ta In Ihree IIh"l auo,.. COIItIIDIn,IIow volume tr.
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Prec:!p\tII~ .... tho Mmpteo wl!t'rel>\ tilt plItl<:\of; Iblilormed dur1njt j>Te-a£In( ....aa\Od and II'"' 101 dlaIocaUonI. wlUle U>o.s< lbat rormed at ti3D -C nudeitoil ......... _alr In tile IlDOCCUpied .... Im. v.".". of '" "'1M ~'l' pre<:lpIUItH _re eakulated II>tIependelllly USIn& bot" 1 " " " ' - - electron D>ICroIOCO$JJ IT£M3 and a tnq/Idlc tedlnlq, .... and ....... ill the ....... 0.02 to 0.03 far \.hi: ihr« allop. "lb. t.,.. dcpondo""", e{ the _.-.,. po.tttcle oIzn we .. """",,,red (rom dati< Reid TDI photOC"'phlI. The..,....DIDjf note <:onst1lilC. doafOMd WIlli Jncreaslng r.,. by about • rIdcO' 01 eliht ....u thil range. lhl . ...... 11 ts contral)' 10 tho p1""dldJono of all 0XIIt1ltj th,aHa. t . • . thlt tM coaracnln( rat .. alIould _ with InCTaStnc It. We believe /hIt tilts uou...w resull It • <.:OIIKqUtnct 01 clawc "ll.ractlOn& II!IOT\II til. preclpllald. whk h bo
(3,00 p ••• )
U I .~
MECHANICAL PROPi'..RTtES Of OUCTItEF¥I· BASED .... u.oy PLATE': Brilo CUR and V.I:. Sikb., Mdals and Cuamlct Division, Oat RidI. NIliQn&ILabonlofy, Oat Jtid&e, TN 3713 1.
nr.u
( .1 ,)0 p .•. l
P. • . I
COMPUTER
APPLICATI~S:
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Jack,on. UES. Darton. OK.
4 S432
rh i. ,..,,..ion 1s .. n inrOrlll'! overvia ... o r va do"" eo ,"p"t e r ao ftwar. ava n.ble for ery" tal n ruc"ure an.lya h p re .. ented br the creat or .. of t he so ftware. Li . it.d d . .. onstrlltions of the so Hwar . .. i l l b" aVllilabl • .
INTERMETALUC COMPOUNDS
TM5 GenenlI Abslract SUsiorl MondilY, P.M. October 2~ 1991
Room: 215 Cinrinna.!i Convention Center
&SSW" CfuUrnum: Alan J. Ardell, Department of Materials Science and Engineering. 5732-J Boelter Hall, University of California, Los Angeles, CA 90024-1595 (3 ,()Q p .• . )
PREDICTING THE TENSILE CREEP PROPERTIES OF INTEIUoIETALUC SYSTafS USING HfGI-I TEIoIPERATUAf r.cICACWJIDNESS: L..1la£wt G. E. vigw, Ind J. K. Tlln. Slratt9i: Materia:. R&D UborllIOlY. TIlt UrWriy 01
Tins. AlIs5n. TX18112
n:lltl1IIion ha:tInHs hal IoI'lg been 1$1 b ~ lilt plastil: titld PfqIII1its 01 a V¥ieIy of mallfitls. In iddition. tim. d~1 ritlcl bellaviol mly also ba tvalua!8d using Indtrulion haIdnes$ by varying !Ill dt.ration 01 IoId ~11on. Such hardrwss valUII haYf bHn shorMI by AI!iins flal II) yitId In lC1iYII~on ~y 101 ClHj) w!ieh eorrt!alfs well with Iht activilion fntlgies obtained U$irlg mort radi/iorIaI mdlocls aI aMp 1III!y$b. llis IeeIriQIoI is fSP'(iIIIy loISfNI itl lhII W!y 01 IIij,tI Ifm/*alull U'\lctulil IIIllrtrills, wher. the crttp ba/IaYkw may be I'fIlIaIId ina tiJn~ tashion usq odJ ....... qlJlll~ oIl1l1l1ri11. ti3AI an:!
lbAI ., SWtcllo1ln;l high 1IIJ'C)8!aIII' mOoinclfflation kI vabta "til (echique tor ordered ktermetallie 1)'S1emS. The If"IIIrSiS il lhel'llAlI"iId II) Cr2MI, • prom~ ,.....1n!emIt!aIc sysltn1. Tilt AufIoII 01 tlis paper 'NO\I1d lillt 10 tI1ank IIlI OffICI 01 Naval RtseW"I tor fI.n:Iing tis wm.1IIdtr ONR QIatII NOOO\4-90-J.1185. ( 1120 p ••. )
COIDaWIVE ClEU AND DYNAMIC RECI;YSTALUZATION IN NI)A I C. W, and D S QBUMMOO o.pI. r;I Mculluru, Mocharric;. and Materials Science, Michipn s~ Ulliv., Ii. Lansift, MI48813, '" O. OO"n"ST1iIN. lnst. fur AlIl"meine, Metailk. lind MctaIlphyslk, RWl1i Aacbcn. FRO Creep bcha'liQf and microslnlClUn.l cvolutioft 01 borun doped N"i:y\1 (lC·IS) ... ere invesripied far dcfarmatioollllempCl"llIat$ bctw«n 0.77-0.904 T. II
Fe,AJ-buecI iron a1uminidca have been of iniU'est for many yon ~ of !heir CIIcdlalt railQllCe 10 0Iidati0n ud IUlfldltiorl. Howevu, limited room 1atlpa1!we dueility and poor ltItIt,1h above 6IlJ· C Iwie limiled Ihoir \IX in IU1IdIIIal IpplIcatiOlll. Roanl impnmmalta in proptI1les ha~ resulled fn)IQ betta" ccntrol of com)X:lSilion and microslructun: and have lllowed produeliOll of ductiIt Fe,A1 in ~ablIl prOd\ICI ftImu. The tauiie, en>ep, and hiclt cydc fatip propatiQ of I 16.5 mm IlIit;k pWe 01 cIucUle Fe,AI haw been ~ aI 25 · .... 6Qj· C . A ~ ofthe:se~ is INIdcIO !be prOpCI1iO$ 01 OIlIer ma/.aWs dill cIucUle Fe,AI tniJld repIaI;e..
'Rex.n:h IpOfIIOfed by the U.S. Deparunc:ntofEIIcrJy, Fouil ~ ....RNTD Materials I'qram under f;OI'Itrae\ OS.AC0!5·14OIt21400 willi Mania Mariett.
EnaJy Systnr"II, Int.
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U.S.ao--.--." (J,20 p ••• J
POSITROK lKKIKl~TIOK STUDY OF HEAT Ta£IITM£NT OF TKE THREE MAIH r !;_AL IIL!.OYS: .llnqeh.. nq wanSlt Oajun Llu and Guoltanq 31.ng. Shanghai Iron • St.. alSllrch Inst1tuUI5ISU). 1001 T.. i_lI. ad, Sh.nglla, 200 91 0 •.• ••• CHI NA I Ka l j1nq Wing. Sh.nghli "niv. rlitr , 1220 linZhl Rd •• 811,nghal 2000tO. P • • • CHIMA . The II I lor' o f Fe-12 wttll. F. -I) . a wt'Al .nd F._ I6wt'll . ubj .o t.d to the sa~ proc •••• • o f h • • t tr •• t .."nl h .. v. be.n It"di84 by u.ing Doppl.r broad.ning •••• "r"..en t . of positron a nnihU.t1on . It h .hawn t hllt the IIOr. the con t ant of al".lnu.. the high.r thl v.. c .. ncy co"e.ntrltion r . tain.d by qu. nchl"q fr _ b19h tbperatur. ; vllel nci •• in re_ll.Bwttll .nd Fe- 16wttll re. ove out f •• t . r th. n in f •• 1 2.. ttll. wh1eh 1. conal .. t . nt with til. pra ct i cal proc...... of h.at tr •• t.lnt for control ling the propertl •• of the alloy • •
T h. aolidi ti cation . truct" rl .nd Bl ord.ring phlsl trandonation in F. -& .-tvtt 51 aftlr splet quenchinq- h "vI be.n 1I,..lyuld by u1119 optical and .lectron .1cro.copy. s.~l .. ra""l"9 In _... f.-- 5 0 t.o 5'0 -'i wer • • lectr-.gnetically lIviUted. Indl>Ctlo" _ited. .nd .lthlr ."perh."tMl UIovI T or undercoolMl below T with lin in.rt q... R"pld eO ridificatio n 1011. Icflhved by r.lOQvlng the . .gn. U c field anet splat qul nching til. talll..., drop o.t "'.n two c opper pl liUnl. 'ltI. relultirlq .terostructurl 0.11 Itroll9ly intluanced by both the napll ..... lind initilll drop U~ratur.. Rap id lol1dificdion
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TMS Fall Meeting-19 b
(,,00 p •• • )
MICROSl'RUCIURE
AND
EI.£CTRICAL
CONOucnVrrr-
OF
DIRECTIONALLY SOUDmED PI:t-CII AllOYS; Sbi!lWOO Kim, W.F. Flana",n. B.D. l.icbler, and R.N. Gru,el. Varuk!rbilt Un;y .• Dept. orMI.!. Sci.
and En, .. Na~h>
Lead·r ich CIt alkoys hallC b«n direClionally solidified wilh Ihe inlent of using them as ~ " id material in lud·acid bJ,neries. Composed of uniformly aligned Cu de ndrites in • proteClive Pb matrix, lhe Vid would ~ mechanically l llonJer. ha\OC enhanced eJ«triuJ conductivity. and comribule 10 . reduced t.ane ry weilJl t. Unforlunllely. !he nature 01. the system \u..dlto " ...il)' driven convcClion in the liquid and. $Ub$c:q.ItnUy. a 0.01H1D.iform ma<:roslrUClure. With lhe inlent of minimitiRl Ihis deuimental effect. and in preparalion for ~ udyi~, this process in m1cro&ravil)'. a stud)' has ""~ urwknlkcn which inveSfiples the role of iOlidifiu .ion panme!C1S on the subseque~t dendritic micrQ!.lructllre. The effeCl of I","", -;vi.tol.,. on the nUcrOSlrIlr1Ure is p,escnled in view of resullS from dircClionally solidifted Simples. In addition. a model which prediCts Ihe effectiYe eleClrical conductivilY of the compos.ite is introduced and compared with experimental findings.
,.... . . <>P~ .... 100- - . -rol..r_ ... ioIufItioI ...... B.rr· 0000Irid0 ~ _ . -r ~ - - . . olcopllaly ~ . . . .
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eo.... eo.... T"••;,., .n
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METAL SCIENCE OF JOINING II: JOINING FUNDAMENTALS B: Bruing & Soldering Sponsored by TMS Solidification and PhYSU:a1 Metallurgy Committeres Monday, P.M. October 21, 1991
Room: 200 Cincinmr.ti Convention Center
Session Ch4irman: F. M. Hosking, Sandia National Laboratories, Melting Research and Solder Process Division. P.O. Box 5800 Albuquerque, New Mexico 87185 (1,00 p .•• ) AlNPAMENTAU cw WE1'TlN(] ...sD !1'UA.O!t
._1_
SoI6orin, ;' 01"_ "'ruotd ..... m...... 1OChIooIo&Y _ fun4lmcntal . ..... _ _ ..... ..... y., 01" ooWui.. ...-........... "'" II>< _ 01 .. 1IOc~ .. " ' _ .. ... ...ait>a and ~d ....... ",. B.tl'·()ood,.,. - - " IOIhotMod,-it. 01 aopJl••, ;. utiliz
of
role ...
(a, l O p . ... )
FUNI».MENTAL METAU.UAGICAL CONSiOEAATlONS IN 8fIAZIt-tG ANO SOlDERI~: lol L Sao!tII o..Aidge NAonaI~. o.Jc Ri
"",..".
Bfawg a'ld soICIerIng are I~ ~ant pr~ II\aI h_ been UHd to join ~1I . tnce III'ICiMJI times. TheIr unlqutnesa ~.ms Itom Ihe !Itd
_-tighl_
\tIM rnoot.ru-gIc.c bOnd.... IormId cturir>g till pr_ by - . g onty a . . . meutlend not till pIItI being joInIcf. BondIng II ..r.c:t.cI through till meIIWIg.kIw..:l toIcMeadon oil flII( IMlllIO Iotm .. Of I
"""*'"
ULT RA ·FINE eOUIA)(E D GRAIN REFINEMENT BV HY OROG ENATION H V... ~'m" . ~ . K,_ ••• • Nil ....... .. \0>.". IN TIT ANIUM AllOVS; II.',,, ""0 Lob .. ~,_s...1 " 'kori . y . ........; HI . • ~ ~. T.h", .... HIoD!.ok Si._ 51 ... W,. 1'........ K._ .... i III . JA'AN
......... f - . T"Ioo r.o"o1*
$oIck<'" proIi......... Tbls - - " ; . 0100 ...... ID ""look ,n.." ....~ ..
lila maI1inO baIIMr 01Il0)'l. end Itla pI\tnoIMoII 01 ancIlow 0I1iqtQ on ~ ....-. .... kay ~ ...... Iot~ .. ~"'hpr_ »-0. lila hi«It .-.:I ~ '" watling and low SllDI'Igfy inI!uanca joint propaniu.
wong. AtudlnI bOnd.
(, ,20 p •• • )
~
N<-.na. and ........ _ all dcrioad _......n;.. 0 1 _ ooI
~.
Aspacrs 0111-. phil_ie- IIIal ... irnpclo't.lIlor
braztl; and aoIderfog
will be cbcufMcI....:I thIW ~ will be blrlllod with Ij).ICiIIr;: ~ ~ wOIIr: lpon.orad by till U.S. ~men1 of Energy.ll pari ollila Ceramic TechrloIogy!Of MYanctd liN! Engnn ProjacI IffICIeI" conultd 0E-A~1t!1400 witt1 MarlIn MIIIIMht Energy pIOO.ISMJ
""-n.. _
Wjt.
_ . .... Ioooa . - " " . - ofItooU. S . e o - - - -
Mo.D6-~I~ ~.ItooU.S.a..-.....
_
SyIt_.
.. _ _ . _d";"'...,..II)'""
.. p..t.I.... . . -. . ,..wioboool_"'Ibia~
... _ _ ID .......
U . s.a..--~ .~
p . .. . J CERAMlC'METAL JOINING: R E I..oebman. SIIIdi. Nltlonall..abonu:ories. P.O. Box ~800. AJbuquc"lllC. NM 8118~ .
( 2, ~ ~
be joined 10 metals by a ...new ~ methods. Somo ~ the oldcsI invo/vc mn.allitint !he CCtlII!Iic ....:I tbe>l1nzin&: 10 iI wiIh odilivcly noble aUoy:o. More nxem Ieclmiquoes employ ~ Inze alloys IhIr. O)nllin smallll1lOlUllJ 01. dements...:ll as n . Nt>. or Zr ilw 1CICI will> !he ___ 10 form !he bond. Ccrami<;$ al ... can be joill
00ndcd d~~y to lho metal by healing litem above thoir ""'" lranIili"" lempcmu~$.
This ~ntation will review different types of ccramic:·meuJ
p oilio,. cmpiwWngihc role of wctlin, and ilHedllCial reactiofts on adhesion. The discussion wiU hip""'" ~ and bonding ~hanislra for IT"ICR ad'v~ ccnmK:t suo;h At Plicon nitride and aluminum nillide. At ""ll as for k a IradiUonaI hich IIImnII ~ ~
W#'Ilc ·,,:~
IIltAL· CElAlIIC Itn'UJlACZI , l!.+.CTIOII COIITlDLUIIC 'HElIOl!fJI.\, C" IAyu4 • • nd ..... Cbl~~ . ~ ... C."tn f..-. IItldlnll .nd Jolnl.r, . ........11. Colondo I . _ I of IlIn... Colden. COlondo 'O~OI .
IIntll\& of . . . . I · u ••• le ".....,1 . . h .1_. . . 1"0,. «oo>t.01l04 b7 t4 .... tlon at tbt lnto.h.o . lot. tltt o~ .. ~d _toL· ..... I. "UU"I ..... ho . lo. un not ..... pro".'" . , .. tUh",,- .1 ... 1. IrIoU '''orw>dyft.o.le o.lu.I. . lit ...... t""t ... lOl ... n Ute Uta! · ......1. In... to .. 10 e onnoU .d "7 t _ h .... htld pbt_". : a ) tho ..... " ...., .". Odd. 10,...... tho "'1"" .....1 . u4 to) , lit .~ . . l •• l .... t1 .... ".". .n till .".fu l pM .. (nOt t ill ilulk phlo .. ) of th. . . . . . ," ond tho _It.n _ t . l . 10 ~ _ .. 10 10. .1... .o~ ... n t od"'. It, ••• , routl"" 10 1l.lud _, 01_ .atlon 'lff,.. I"" . 10r _toto fo. .lnll """ · nol.hi .... u.l. odd. 1.' .... utlon dlUu.lon h upld. lIb.n _tal l ona ......... U.bl • . • l u(Uttont .""dIU"" to. ",.tina 10 lllot • • ponton."". . . .etlon .. toh tb • •" .r. .. of ,be ~ •••• I~ occur. . Qu.o~Ut .. h. pudictlooo •• ro pr......d fo • • 1_1.... · _0.1 latur......M til. p.dl.Uono 0 •• • • lIdot td ~J data f .... lltt 11 ........... ... 11 ..
p"""
,,,.It,,
IJ , .~
p . o .)
THERMODYNAM ICS AND KINETI CS OF SO LDER·SUBSTRAT E REACTIONS: TlIEORETICAL CONSIDERATIONS '. A ChUI Uoiv. of Wiscoosin. Madison. WI. Ind A. D. Romi,. J... SlIlId'i Nltiollal u \lonloriu. Albuquerque. NM
r
A RacOOn will oe<:ur wlM:n I IOIda illoy is placed in _ t willi • mellllie subw.'e. An imponlllll fDlllil'eswioa of this rUt1ion is the fonnltion of ill_lillie compoIIIldJ IIIl!e lO\du·subwate iruc:rface. ~ formation of 1hc1C! Ull"llpoond.
....,nin,
20-TMS Fall Meeting
I
KINETICS OF SOLDERoSUBSTRATE
~:~~f.~ii!it~:'\if::;i , CONSIDER ATIONS ,A.Chane, p. Ramie Jr.. Albloq~crq~e, NM, 'I. ·A. Ua;v.of BoIc.vlle. Un;v. ofWilCOllsin. MIdisorI, WI
!l,GS p ••• ) NEW INSIGHTS II HYDROGEN R£Lt.TEO F'AlUlAO. H K. Bknbaum E. Sirois, Materials RB:s8ard1 laboratory, Unhlersity OUIIIOil, UIbana, IL. and P. SOironis. 08pw1m.m of AppIie4 ~ .00 MBIerials.
University of Cdb'nia, Santa Blrtlafa, CA
SOUDlI"C"'TlON S'nllCT1JRl; DEVE1.OP'MIlNT AND sVJ,Sn ",:l1i MU. ... CTIONS IN $OI.OEI AUOYS: , H f>sr .... 4ll lloi.-c, 01 Wiooooilio. DIp. '" MII
S
_
./0001
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IS ,OO 51'.') DI SSOLUTION ANI) ISOTHERMAL SOUD lrlCAT ION IN TRA NS IEHT·L1Q UlD PHASE BRAZ,IHC: I .U NQrn. Dtp .. I .... ' 01 10101011 • • " an. MOlt,111, Scluct, llnh... II, 0' 10'01110, T o. oa lo M5S IA4 , O~tI . lo, Cu.4a. on4 iwtlw ....1 JOIiditiclliOll d~ri~, Trlnlle~1 Liquid ",_ B,"i •• 01 ,,,,tcl bu b«a e .... incd uslft' I comblll1i ... of finh. dlff...... cc "'od.lIi~1 •• d .. pc.i .... n..,lon. The <_bin.,;"" 01 I Ilow ~UdD' ..... (bc,wun ,be fillt. mtlll "'thine poiftl Ind IlIl btld". . .mpe .. 'u~) .rid I I~;n finc. "'etll cln p"""OI. fOlil/ir,,"tlon duri •• lite butin, cycle. Tb~ Ulcul.,od .1" of tampl., lon of ,~. IJOlh. ",,"1 fOlidificluon proceu .. " . 10"0' tIIln in Ih. Ic, ..1 b... in •• i'"",ion. It h.. bec n conn"".d Ihl! Uquid pen .... lIon "' , .. in boundlry .e,iool Ic«I...... Ih. iJOlk •• m,1 IOUdificallon p.occn by inc .... in' Ihe effceli •• lolil/· liquid ialc.t-ciol .... Ind inc.euin. U.., ,,'e 01 101.," diff~o.ioa In,o ,be blK ","orill. .... In.lysi, 01 olccltOD cbnlllllin. plll.m, c",," ..... od 11011 ,."dam bi, . . .,le """ndln.. Ilcllillle liquid "".....110. d~ ri. , ~ .. o.inl. 1'111. dl«1 01 ,,"r ~ d.ri •• b .. boo. I.k<, i •• o I«OWot in lu"b •• ......roUiai 01 ' M TU··b •..,iu DinoM~
__
PARKINS SYMPOSIUM ON FUNDAMENTAL ASPECTS OF STRESS CORROSION CRACKING I: see Phenomena &t Mechanisms Sportsored by TMSIASM-MSD Corrosion & Entrir01lmerdal Effods Committee Monday, P.M. October 21. 1991
Room: 302
Cincinnati Convention Center
Session CJuzinMn: S. M. Bruemmer, Pacific Northwest Laboratory, Richland, WA 99352 12, 00 p ••• )
OnlllllG _IlkS
AlII)
U'fJIO'fJ: IItl'll>OOl.O:1'IO'" S .H. 8 n . _ . ,
NOrth ... n Lilbo.nory, klehland, WII, InC I.H. ru.,h, HaUond IuoU"cn ot llel.., •• and ... ohn~I09Y, o.1thotrollurq, lID, And N.J.H. Holl'O\ld, Ale.. Incnnatio... ' Ltd" BAnbury, United Un9_ . ~""lfle
pIt$I I..... ~rs it lias b8c0m. clear thai amoog lilt few viIIbIB mtd'lat'll$m, of hydr.n related lallure Ia thIt medllnism of ~ EN't1flOlld loeItru:ed F'IMIie11y (H.E.L.ft.). In 11111 I..... med'llW'IisIn, 1'IydrogerI. whIctI may rflU~ "om a c:orrosion lallClion, CatlSIIS • IoeaIlzId decr.aM ~ #'Ie re~ 10
In the
(4,J 5p .•. )
di$lOaolion ~ will b8 4iscYssed.
(l,U p ••• )
fLM-INDUCED ClEAVAGE, R, C, Ntwm¥I COnosion iItId PtOIeCtion c.ntlI, I.IrWtr$IIy 01 ~ .-.:hesttr, 1nIt. Of Sdtnc. .., TechnoIog~. ManetI"\e( M60 100. EIIQIand, iItId I( SitlIdDI. 0eiIt. 01 MaI8l1aIs SdenctI and EngIoMrIng, 'thtI ~ HopIdnf Un/v., kItImore, 1010 21218
DIsoonIinIIOUI prGpiQalIan 01 str'III-wroeIon aPt (WI be demonsb'aled In .. __ .yaI&mf and infeno«l in mart)' O\htlS. FoIIow4nO'~ by E. N. Pugh end olhllnl on cHnss 8IId F.-cr~ tIIoys, ali1rr'H1duold c::IHY9 tTIOdII was cIIr.-.Icptd In wNerl ~ IIfOI)ttIIM 01 dt-.-orlld 01 0Ihtr nanoporous 1a)'tlS _ _ InvoMd 10 upIIIn lie rtggemg of traNgIa"lllW mlaode.,.. In fIX: mNh. ~.~ on 8'tIn aIoy ~ '-"tI bten us..:! ID ~ ....:tt II!ICtI In • 'Itge shot' modII whare _ ...". ~ ttoougll Iht .mira bI I!IcIo:Mss.. p~ tnMIiYt ~ _ _ _ _ abtIIntd In ......"0 ~ .. wtI all II\IInfy ~.....nIS In eu.ln aIoys. ~ flllht nllflOPOfOlltY II I'OOtTI ~ralut!l ~ 'fie ~ In bee ty'$ItmI, mucn IIWu1tf H« ~ 1a)'8fl . . t.IIeIIed ID cause sec In ....,.".". N .... lind C().(;O, ........ ~. 111. . if II link, IIiI unresolved. with l!)'(tog.......1Id mk:roc:te..aga as diIcuIMd by Gerbetlch iIt !his s)'lllpOSl .......
01._
I',n
p ••• )
SUFlFACI! MOIIIUTY IIEQIAHIS .. OF sec. J. R. GaIve1e, Comisiott Nocianal de Entfgia Atomica, 0epI0. Mlllerialts, Avda. I..lbertadar 8250.
142t-a.- Aires, AlIII'f'Iina
AOCOnIing ID the au1_ mobility·sec mtehlnllm. MIYironmentaII)' inct.ooId cradt ~ II dut ID the caplin 01 v...oes by the SI18$SId 1anIot, " lilt lip of the cradI. The IMI 00I'1II'0Iing step is the .... of movement ot wacanclts along tilt surI_ rj Iht aD. WId thIt IOit of !he "I•• ".' '''''' is 10 ~!he IUI1act seII-diltuSMty of thIt metal ... aIoy. Ths mechanism pr~ tn.I ...wonmentall
Irnt:ritllcrlmMi should be obstrwBd on .,..... sua.ed mlltllls, aI templl'lIIuIes below 0.5 Tm (Till being tht "'thing poh of the metal in oK'). and In InvitDMlBf1l.llI 00Idti0ns 1h8II rIlaw t»gh surface mobility. CotIIIatiorIs betwHn the predictions 01 tIlll rnec:hII'Ism and stress 00tT0Il0n tlaOOng (sec) haw b8iIn ~1IId OUI In MlYllfai IBCef1I publications. A disaJssion ot the adYanIagIS and Ilmltalions 01 !he mlCl'la:nism wi. be maM in the pr85ll'llll'Oll\,
TMS Fall Meeting-21
PHASE DIAGRAM PREDICTION U: Data Bases and Prediction Programs, International Symposium
Sponsored by the ASMIMSD 'TherrMdyn4mics and p~ Equilibria Committee Monday, P.M. October 21, 1991
Room: 201 CincinNU Convention Center
&sSWI1 CluUrmm: Larry Kaufman, Manlabs. Inc., Division of ALCAN. 21 Erie Street. Cambridge. MA 02139; J.K. Lee, Department of Metallurgical and Materials Engineering, Michigan Technological University, Houghton, MI 49931
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Un~~ I'M'" _ ""uin .1Id tb. carr •• pond ln., tr .. 0"" ,'1Y eurv ... A e"""", tn pr",._ (6lkln "nl.r - .ol~t1on binary .yet_ . ..ittl ..Ucb 0"" un ... Uy prodict t ... <.....olUoa o f out.eUc to po r lUcUc ......ctic t.O ..,..,t...,Uc, 0 .. po eorr. . pondl"" fr oo .... ~ ..... f. c," boot . 100 hot.llo ... , .ection. of .. pho. . di.' . ... fo r • . - - l.r_oo l "ti...... ..... ..,. .,.t_ . ...ut .. of tho .........,. ph.." di'9""'" 1. ....1ud1"'i" _ ... tflbl. pl"Ia .. boWld.&r1e., " Ill be p ..." nUd. Tl"IIo vork ... . porUaUy u p portod by tho o.pt . o f t:>erff .. nM" 9,.nt N_1'C02_87 ~~' S31S.
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(2,00 p ••• )
ASM INTERNATIONAL'S PHA SE DIAGRAM EV ALU ATION PROGRAM: C.A. "".b., Allie
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'n tho lotc 1910 •• .uK jol .... d fo ee .. vlth tho lIotiollal 1nstitu••
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o f Standard• • nd r • • hno'ol1 (th.n IIBS) to b.,ln • pro, ... o t orltlcal evaluation ot .Uo, pho.. no. ,0.1 .... . to odi .... ., pIuo.. '11.' ..... nOl. ,..,1I. o..., occ_ • .,lod I>y
th ...~.... lc o.. o.. _nU •• _n . 6$11 h. . .Ito pubUlhod two • dltlon. of .b ~ ro f ........ _ . k. lin ..... .!oli n Ph." QI ....... ond
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"oopound •. S t .ble ti. line • • re .,al e .. t.ted by .,oopar i.on of tho. tr.e .nth.lph y o{ •• actlon of .11 pO • • i _ bl. reaction a bet"een four ph..... In tho. ternary. 1n the q"ate r n.ry all th. eOOl"t1 l1g two and th .. ee pha .e equilibria a r e eooopared "I.t h e . c h o ther ."d a lilt of .table equilib r ia 1. gellerated . In .ddltion, the Int . ... ectiOtls of .table two and three pha.e equ ilibria with a use r .pecl.flod plane in the tetrahed.on c an b. calculated and plotted.
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11i1JUfOOYNAJoOC CALCVtATIOHS WAl)& u.BY
a.....a... .... Boo J ........ Oil'!..... of Pb,Joi<&l Kot&ll....,.. Ro7-' bon_ ofT........" &-100 44111ooc1doo1m, . . . .
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U ,OO p •• • } 1'.r Ql,la t . APP ROX IMATE 'R£OJCTlotf OF TEl'lIlARY -'NO QUATERNARY 'NASE DIAGRAMS COMPR I SING STO I CHIOMETRIC '"UES, J. KlI.ngbeU and It. ScY id _Flt . .r . Techn1ciOl Un'" .. r.:l.ty Cla".thll, HetlUurgi".l Cen t e r. Jb:>OertKoch-S tr . 42 . D-3392 Cllu.tha l- Zellert.ld, Ger. .ny The Ter-Qua t "ethad . , an ea.y- t o- ..... l ool for I tJrBt pr .. d lc tion ot t .. rnary alld quo.t .. rnary ph ••• di.gra~. A nu~er of . i~plifl cltioll. (only . toichiometri" eO"pou nd., IiG to .... Uon can b .. appro>
(J,'O p ••• )
PSO _ A SINH PROGIW! FOR CAl.ClUtlr.G SU alUlY DIAGRAMS;
H. Alan I"i~, ~t. Of Met. £ngr. ,,'" Mit is. SCience, t.\1i~. of Kentueky. lexlno;tOtl, U 40506. and A. E. i't:IlTh, Dept. of llet. £ngr .. ItIh. df i't:I_ltolh . Ro1l4 , III 65401 •
A new algoriUm Is ducr ibtd for the CO!1stl'll(tiOtl of PSD' s • fhe FDRTRA.~ proqr,,' rl/I'IS on !n !M-PC. lhermodyna:rtic diU on UP to 60 species eln be entered Into a daUb-ne. The U$@r spoec( fies t he elelll!n ts and species for the system and the species to be plotted en tMe Y and X uls. The Pl'"09Ta.. then develops l>alaroced tlle",lc,( ",actlons for iii DOss lble condenSed plhlSl! ",actloni, ,II(! then ealc\llates tilt C1)Ordlnatts for DOlnts on the PSO which rtprtsrnt three condensed !)hIH equlllb-ri ... The stahle pOints Ire IInl'd In • t,bl., and tl\e dlagr"", Is plctted. The ultr lilY then "'CllII!st dUfe",nt I and Y scaln to plot an enl'rged DOrtlon of the dllgr, •. S"t_ . nd/or dlagr,105 "",y be sned for fu t ure uSl!.
,',00 p .•. }
THE INFLUENCE OF SOltmON·MODE.l COMPLEXrry ON PHASE 01 ...·
GRAM PJW)lcnON; Mid! E. Schlqjpccr IIICI Joseph W. Newkirk, Dept. of Met. En,., 2L' MeNuu lUll, Univ. of Misaoun·RoLIa, Rolla, MO 65-401·
0049 .
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ID the derivalion of pIwe diJ&rams usinl and liqul6-lOIution Ihn· modyn&mlc equilibria, thermodynamic modds aft oned KI p\Qplllaupcrimetl· tal data Kli ~ ranle 0{ eompositiolls IIld ternpem\l1a. Slid! models I\a~ hlslCIIi<:a\ly inemlsed in compluil)' from the n:lular'Soohllion formalism. with n:prd to both lempetlltun:.- and romposition--depaldenoe of parnneten. The ""ular, quasin:llu""" subsub.., ular, and quasiloosublqular models IIaYt been applied '0 ..... lIin' lhurnodynamic data for Ihree "simpk" rncWlic sySICms or diffuir!& types (OI' Ni, M,-
A lAIl(lAATO!tr TOO!. fOR CAlCUlATI OK Of IIIIARf SIST[MS . J. ClI.d.s. II . Motl., M. R, ..... . Ind J. No.tI . l,toorHo ire de The.-.ody"_lqu, IIUIII.'9Ique, UA.CIIR S 1101 1'239 . S.SO/i F· VI._.V~ l.s M,IICY (fdu IWICrtRI,
o.de, to ... I... Ul l ho (ob,.,,,,,, botl""" '117 ""' uperllllftl.l I1ft. . ..-,.,.It dtttral",UOll .lId u.. ,Ireldy _ _ , to
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lhe uperl .... l.l ln '" be 'fr7 Int, ...std to .," II lis dlspo"l I slll" t too l TIll! t_lt< lIAIICYlII Is .ble '0 Vlre In IftS"" to I~h pnlbl". It is , Ilrqel, IfturaoH.c Pnlll'" Int r l_nul dll' ,.'1 n! t ( IMtg rl!.<>d ,..n ll1 qUI"tltles of to •• ulon fo r 11 .... 1. In' soli d p.....S, tMnlples It.d .111"9 U.pt ..... res of (OIIgn.orn t 111111"9 e_lIds). Tlot ... ftrefl
''''9'''
DEMONSTRATION OF ~BINGSS· BY THE M,- Zii SYSTEM , SlIJ'UlI Frits' and Ilw Lm~, ·'DIIII. de Filio;a, UDf~. Federol do Rio Grade do SaJ, k,. ScIO GolI.o;ahu 9SOO, POrlO Alecre-ll lS\lO, Brui!; " Mu:- PlallCk- lIL1IIIDI r. MHallror1dtaq. hilt. f. Wethloff"tfiNtllKlL&f\,
22-TMS Fall Meeting 01 Iberm(ld:rDamiC epxerimenl dall. "'a1 be
, ho... 10
• •
METALLURGY OF INTERMETALUC
COMPOUNDS n: Engineering Design
'.'18"" .ncr Fuen •• &oho.. lo. of In • • ..- • • IUU . P J I/r 1aht. C[ Al.uaft tna1 ..... 11M...... " W.y , CSO. Cl n"' ..... U . OM U213
"ho..lo. of 1" ....... Ulc .Il"". vUl ....ul .... od • .Ina ,be ..." .. "".oct.,.. t .... cycllc deto ... t1on to crock t o crod pro""a,lo... hrouCh fi.o! f ro" o",.. ""' _ _ huh "tll bo 01> camport.... ha behavior ......0 dAte f or In ........ olUu .. lOh .he .0 ....Idoly k"""" .... dy of "ndo... . ndlnl for _tah 10 ..... tne .he utent to "bleh .... Ule concept. un boo appl1.d. lX_I • • will '" "t... f . . . .ho 1I'''.'''ro . . ... 11 • • fr ... prowlouoly IIDp"bll.h.d . .... reh. " ' . " _t>HI. will be on .he .1 .... I ....b ..o4 ."" olcul-bo ... d .o il_tnt" .110)10.
Tho< !alia'"
_
lnUhUon
01""" U .... "'"_ ..."" _
the TMS High T~mperatwr~ Alloys Tiumium Committus
·. IK.<._"'"'IW.....
AF Wright Laboratory; and Dr. Y-W. Kim, Metcut-Materials Research Croup
II
Room 2021212 Cincinnati Convention Center
Session Chai~" : Bill Troha, WL/POTC, Wright-Patterson AFB,OH 45433-6563; Dan B. Miracle, WL/ MLLM, Wright-Patterson AFB. OH 45433-6533 C~ ' OO
"'401, . ....UM.
f,!jf!l!t Brhniorot Nit\! SinKk Cmiab
I~;g~~~:~;"o,~. R. Darolia, GE Aircraft Engines; Monday, P.M. October 21, 1991
t
Robert O. F"ldoh..1
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ori~Cl)'Sl&bwen:pcfformNlitbolh_"ll!JICraILItI: ..... lotOO"F. T.aiq was ~ b3d11n fIRin CIOIIUd ond IoI t~ 01
IDadin&.
f~ofu.. IaiW spocimaoo maIN ___ ~ panUd to die u.is 0I1oIdint whicIl e....·liflked wi finally ru.!\1e4 in r.. ft1au1t. The dcwued \efJIptraN .. flli,..., bchaYior IOIlo>oW IhI: eopcacd ~())tIIa 1Uli... ]i!c bcharior 1)'picaI ofCOll"edional nidr.el·_ lU/lCralio)'I;. Thc 11_ we .. m,e. ttwrIpamilO R.....1«. lit hi", linin ,"""S beI:_ of IhI: bigllcr dllClility II l4OO"P of Ihc NIAl alloy and lhe 11_ we .. .ml\t. .. 1IIe ...... strUn
p •• . j
DESIGN Al'l'LlCATlotl OF TITAHIIlK aASE IlITelUIeTALLIC MAT'ERIALS '1'0 GAS TVR5IIfE cotIPOIIEIITS: R C . HAUBERT. GF; AIRCRAfT ENGINES. ,,",,11 Drop Alii, Cincinnati, 0tI 4 51 1 5
Joint indu s try and 9ov .. rnmant 90al. tor th. IHl'TET i n itiative call t or a doublin9 ot aircult .n9in. propul!;ion p.rlonlanc. by the year 1005 . Aehi.vin9 thi1;: 9os1 "ill require siqnificant advanceaentl in .any technoloqie •. On. of th . . . technoloq i ..... titaniUII bas .. int.rmet .allic .... t.rials. provid a a .... jar at.p to"ll' .. rd .. the r ... lil a tion ot reduced " e1 qhta in many dlvar •• ...... in. cOllpOnant applications thus providinq slqni tlcllnt contributions to the ov .. r a ll thruat to " .iqht 90al s. Howe v .. r. th ••••atarial. also p r e.ant many d •• i9n challeng"s"" re.ult of their r educed ductility and tractur. t01.l
PHYSICAL METALLURGY OF INTERMETALUC
COMPOUNDS: Poster Session
Sponsored by the TMS High T~mptralur~ Alloys and Titanium Committus ~
"Po.tu SeAlons" SectIon 01 U.a Rna! Program for Ab$In~.
Monday P.M., TuHday, Wednesd~y A.MJP,M. October 21, 22, 23, 1991
Room: 2021212 Cincinnati. Convention Center
Organizers: R. Darolia, CE Aircraft Engines; D. Miracle, AF Wright Laboratory; and
Y-W. Kim. Metcut-Materials Research Group
Cl ,lO p ... . )
ALUlII" UII u n UTlMHrtALt.1C "A"!"UIALS APPL ICUIOII "!"O GAS "!"UUlM! AI RrOnl , 0 a I.Ch ... 1Jo. CI lI,""nt~ 1"11". . , H.U. 0""1> A311. CIRC I",,"I. 01110 H1U ~I C Ut.
Join ' I"""",t.y .MI . 0 ......... , 0,0 1. to. u. !H~TE" I BItI. . ! • • ull for • _bll ... of .be .h·.,. d, • • 0 .... 1010. I>ufo.aon.c. ""' tho ru' 200~ . U~ l oYlo l ohio . _1 . HI A
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of "Ichl ol"ol.ld. Mo. ... lorlol. 1.' 0 '.rlol.o .Irfoll. can """. Id• • •dot " u l_.orCed .... bl.e co._e.' " .llh. . . .hU ••• ducln, t"rbl ... olrfoll lh ...... l ••• dluto "h leh I, '"rn I""" r thor .. l .t........ . _OY*'. th ... _t.rlal. , . . . ."t _ . , dull. "".ller.... du. t o .hu . ,n l.o,
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IRPTtI OPMl1I~ITIU AlID ClW.LtllGU mit IttC'S: ~ Fech. C"",ona .. t. lroneh, 1\0.1>1 •• [". I"a IIh1010n. Mro Prop"iolon .nd ~"".t 111 .. «0.... , Urllh. LAbo r a,ory (IlI../POlC),
PROCESSING AND MANUFAc[uRlNG OF ADVANCED MATERlALS FOR HIGH TEMPERA nJRE APPUCATIONS II: High Temperature Protective COoItings
Sponsored by TMS Structural MIlterials Dillisiol1
Monday, P.M. October 21. 1991
Room: 203/213 Cincinnati Convention Center
&sswn CMi~" : Robert A. Rapp, Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210; Vilupanur A. Ravi, Lanxide Corporation. P.O. Box 6077, Newark, Delaware 19714-6077 (In.ited) OF TEMPERATURE O(PEII(l(NT EFfECTS ()i THE OXIDATI~ PROTECTION Of C/C , £. l. cou~tt <,ht . PiCHlc No 't/Nest l,bonIOry". P. O. 8o~ lIeh ~nd, W,I, 993~ <~,oo
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\/I'AFI OM 4S4n AtSTlACT Sot AVAIL.ULI
RE~I[1j
(l ;W p ••• )
I.t.,.,.. t I" tllo "so of urton/clr_ fo r structu ~. 1 .. ppl 1utlon continues beCiuse Of tho! e~cellent streflgth retent i on exf1lblt~ by this cO'I'PosHe ~t high t_rltu"s. IIOwever. tM princi pII perfo ..... ne. lI .. itlng hsut, which Is oxidotlon prottetlon. hu yet to be soloed . C~tln9 de.elopment efforts hi ve been ute "slV4lly pursued Ind tho p,lnclpl] f. ctors thlt 1 fOllt the efftettventu of oxidHion protection systems hive been ident i f ied. Thi s pl~r r,.leos t he tellPSrltu~ dtllt'ndency of
ISSUES IN ntE DESIGN Of DURABLE INTERMETAUJC lolATERrAL
STIlUcnJJt.ES, Roben E dcl,..,cyril!c, I"r&a and Whi!nc:)' A~ WeSI
Palm Belch, fL 33410
m.
TMS Fall Meeting-23 ,,'o'er, I iooporhnt criterlt suc k IS the 1I.IUtlons IqlC'led \I.)' • nd the ~ I nnltl of ox idttlon for undldtte (otting . tteri. ! s. The In fluence of 'tt l-.. /pu sln trusltton • ..on Ion by eva_u lan • • nd tl\etllOChemk.l st-blll ty . 111 , ho be
'ijptn l1oYI, et c. Tes t ing of t hl ul d u t on , nd ~o t co rr osto n I'tsh UnCi of tkese coa ted ,11oy' I IIow Ilgnlflt ant I lIP ro~Yeflts .
-Operlt,d for tile U.S. o.-plTtlWn t of [nf:t'U by,.tten, ~rt.l [nnHute unlle r Contr.et DE-ACO!i-16RlO 1830.
DJ:rI'OSlOlt
o~9fn pe .....l!lbtl1ty •
1.,2iJ 1' .•• 1 ~'I'III G.3
Unl .... n ity, 116 P,lO p ••• J
Oxld . tlon Protec tion ofCISIC Cera mic Me ull, Co m poaU••. Peu l E. Gu y ; E.!. du Pont de N emou rl . nd Co. Inc. , Adv lllced Compolltel Divllion . Newark , ~Ia w .re.
U... of chemiully va por inlillNl\.fcd (CV1) SIC mlttic• • wi th u rbon libe,.
I, one melhod of ;mpro... ;ng eom patibili ly of SI.blud eoetlngs w;lh u rhon nber reinforced u frsctory oompoaitea. DuPonl i. uti lj ~ ng th e CV1 proce.. '" produce such CiSlC COIII poeil" on I II",e IeI le. The pe rfom'lllflCt of thne ' UMu..tea wi th uvers l o",idltiOIl prol«tion colti og Khemn;, pl'tStnWl io I v..;ely of lhumll env; ronme MI.
1 2,~
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CHUUCId. VlI'OiII DEPOSITION OF SWCA ON CAlI ION SUAFlCtS: U ~ Prlillill labotIIcwy. 0lAC I'\.IIIKFC. ~ CA 113m.5000
Trw ...... tcdoII 01 CI~ ~ .. 110m ooicWIon It !\loti I~" .. ~ ~ Iht&Io ......... lMgh ~ . Uuc.... l1l1\11eri1b "" 10 1>1 w,ttl In o.b ' inG """-'" It ~ -..100" C. H u _ diIt....c ptOItCIioon ~ n'IIde .,... 01 WItIIota, 1II'\ft. til(! tiIO
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--=
01".
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( l,10 p ••• )
OF CARIO~-C~nON COKl'OstTE US INC II . L. J"bu"," , Thloko l Co rpo rati"" .
OXlD~TIO N ~~OT~TlON rAC~
lID
COf/VUS ION: 1191 1.
Ca rbon _~.' bon ~_p.,"I ••
N" ~ R - SU R ~lkt<>n ,
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"it h . .. Id. va r to . , of IUU .""h •• carbon "Iodd. , ... te., .B
COnti1lllOU1 tiber-rein forced cOIIPOsltn Ire btlflt (IITS ), .. htch lleCOlJlflOSf1 to SIC Ind He!. ~ sUtlonlU fiber .... c"". IM red, .. ith the ruc t or In tilt vertiCil config uration. ... c _ rcill SOft" ",,, HU(MI (by crurt.~) wlS used to .1",lI te the fl ui d fl ow . hut I nd IIIS S tra ns fer i n the ri.ctor . The 111OO1htion res ulU wre t hen compAred .. ith results f rOll uperl .. nts.
(Inv i ted)
COO£POSITI ON Of H £HlKTS If( PACk CEII£/tTATl Oli OIFfUSIOtI CO~ TlNG S FOR VARIOUS AllOYS , Robert A. BUD , O.pHt.u t of Mn ert . 1s .5(1,1>(' _nd Engolflttrilflg, lite CIllo Sti tt University. ( OIUIIIiIS. 0111 0 41210 the....:!>",_ le ca l cu l.tlonJ of tlte e qv lllbri v. u por ,runrn for th e vo htl lt s p.e l es In kaIW.· acth'h d c ... nt . t lon pi c ks In tend e
r. ,..u. va
P.ICJI;
Ii .
19th "VI., Co lu!l'lbu.l. OH
4)21 0
The Intermet.llie eO~pOund FI",l ha . eKeellent corrosion resis t ance and i s being con si dered as an Itte.nativ. s true t u r,l material fo r 600-700'C serVic e In 10" Po, s ul f ldit ion environment l. Alloy ing wit h up to S wt. ' Cr i mprove s creep re s istance and roOm t,mp.r.ture ductility but a i iO .t.bil iz l ' nonprotectl ... r e ,Cr sulfides ,nd OK ides whiCh hinde. the tor~'tlon of a prot ecti ... e alumino .c. le .t high te. por,t u r e. . A diffUSion- al um inize d coati ng of nominll composit ion i n t he r eAl r ,ng. hl l been developed to f ac il i tate the f or.ot lon of I protective ,lueina se,le. Char ac ter i r't lon s ot coa t ing .icro, tr uetijres. coneentr.t ion profiles, and l",othe raa l .nd cyclic o Kidlt i on result s will be prlsented. Trace I~unts o f boron ha ve be.n _nown t o improve t he ductllity o f i r on , lu.\nide s . CJr.lrlCterlzation s o f boron-doped co.tlng , wi ll . 1'0 be p r esented. 14 ,40 p .•• )
MICROST RUcrURAL STUDIES OF VAPOR DEPOSITED A I I. ~Cx COMPOSITES • T CARSON ANDJ. I>l R!GSBEE
0.,-._'" t( /11_ Sci<.ou aod EItPw.u... V....." ilI t(IW...., . IJOO W. G..... So .. V,_. IUiJtoiI611!tJ1 WSAJ
All _xC. alloys have polenlillly ("Ultlndon, hi,h Icmpttalu,e 10... specifIC I " yjly, hi", Prenvh.1ow pIf1i<:k cousmln, rna, ....:I ...edlt", <:emI5ion!Uistanct:. DiffICIlIt;tI ,U$Cd by the oar IOIIJ ilU01W:riliry of C i. AI and the fcmistry ofprecil?' t.oted carbon rich pha_ before and aflO ' !>cal trulmcntl: will be discus.se
"".u
U u . ." 1~ '1'1' 11. .. 1"". tIIlb , .... ", . . ,u'. . .~h .n t u l proper. 1. . a . . . .qu l ...
13 ,50 P ••. I
rOIl 1 _ .u.tIIoU_I01
f , P celb , nd ~. A. ~IPP. Depart~ent of Materi,1 1 SClenee and &IIg ln.,r1ng, The Oh i o State
~.l &A'I' IOM :
STRUCTURE AND PROPERTIES OF METAL-CERAMIC INTERFACES
n
Sponsored by TMS StructllraJ MateriAls Committ«
Monday, P.M. October 21, 1991
Room: 208 Cincinnati Convention Center
~ion Chairmen: D. S. C rummon, Dept. of Metallurgy, Mecha nics and Materials Science, Michigan State University, East lansing, MI 48824-1226; }. Singh. G. E. Aircraft Engines, 1 Neumann Way, Mail Drop H-99, Cincinnati OH 4521$-6301
(Z,OO p ••• )
lM:rtUA(IAL tlACTIOllS 'E1'o'EP
TITAIII~
AUO'f ,"TRICU: AIID C[lWIIC
r llEU I. TIT~Iut< UTaU COK!'OSlT!S, ' s. II . L. Sa'UI .nd D. II . a-don, lIep.,.",.lI DoIo,1.. t ...... h LoNrnorl .. , r . o. k x ~16, $t. Loul . , l'IC 631 6 6.
Tho .uoUon p. . llI oon ..,bI4••• 11! c.,ft n1t r1 d~ , .nd oIua(na Ub.... SI.nlfteu • • dv .... Hbor·. .tdx Int •••• tto ... . 10" • • Io... tc~ , .. c""Hld.nt of tI,....... , u pa". lon b.t.... n .... trb .nd fib . . , and U.l .od . .. . Ix d~cUUt)' ,rod ~ ~. Ut..,..r! ... c ud.l ... 1ft tho _ _ It... n.. h .. i UH t )' 0 1 p,o;I".lol tho . .. h •• i " . . ,tau I " . ...., ..H . ..... honl. .l p'op.. t l . . w•• In .... UI ...1 .. Itb th ..... .,t ......ad ..nrb. t_iouy _,UfI ..tl ...... 'Thlo ..... rth ... . . """"ctod ,,104•• eM H.cDofU.dl _,1 .. Co'pout\ on IRII. p
IZ,)O p. I .l
ST RUCT U RE AN D BEHA VIOR OF META LICER AMI C INTERFACES IN Ti AI..LOYiSiG METAL MATRIX COMPOSITES; Emu1 I, Hal! and An n M. Ritter. G E Corporlee ReM" rcb . n d De~elopment, PO.Bo18, & b en..:tady . NY 1230 1
24--TMS Fall Meeting
TUESDAY Al\J COMPUTER SIMULATION APPLIED TO PHASE TRANSFORMATIONS In Sponsared by ASM-MSD Computer Simulation COmnUtl« and TMS Chemistry and Physics 0/ Materials Committ« Tund..y, A.M.
Room 214 Cincinnati Convention Center
Odober.22, 1991 inn I I . . . - ~er . .ic _ t<1x ..... 1IlVcs<1IUtd, and vh~ " poOI<. . .a. attdhted to the puu nc . 01 0« 0"3 bondln ~ ..... "un tloe e""ponent ph.oo. . of tho: oY. t .... Chanlu in ,he faihu ..,de oburve d . . devoted <1 :Ino ( n devaU d , _ Tuureo l Iro", the IIOtrl>: .. u p<1 ... rlly r u ponaibl. foc the d e,ud a t1oD of ,ho IICchanical prope rtie. of ,he ribbon.
;
::;~::: :;
(3: 20 p . • • )
Bru t
():)O p ••. )
II
T...,.
R• • ctiono b.t .... " liquid . e . .l a nd cer . . i c «Info .....ent Occur du,l". ooUdlfication procu . l". of .et a! . . Crl>: c","»»o1<. . (~' . ). The In to,f" . r union. ". . . bUy cOnU ... . he r d nfordns ph. n . IIOdify tV ..... h <_pnotr.lon. ond yl~ld u ac tl<>n produc ts a t ~h ..... t a l-c. .a ..!e iRterf a c~. In th lA . tudy. aquuu c.. t lIMe ""'1'1", ... re " .."" ud £roo> c _ rclal purlt1 .l ..... in... aod l Op. ol11con ca rbld~ par tlcu l .. " . Th. 4AH3S1CII I~Cl"3Si In ... loc l o1 rue ti"" kin" U<:o w.re . . . .u . .d by a DSC
uchftiqu • • a nd lh. r uc tion p4.
l
(3,!>(J p ••• )
II
t..ELiKh'. W.A.K,yuu·. l.oOi"ma." ,
!;.Gu,""'....... fI
J. K Lee, Department of MetaUurgica1 and Materials Engineering.. Michigan Technological University, Houghton, MI 49931 Session Cluzinnan:
(9,0 0 a . m.) (Invited)
PHASE STABILITY IN DRNEN INTERMETALLICS
G
~N,P. BEUUON.F.SO~N. F.~ER"
Section de Re~herdltl d. M'tallurgi e Physique, CES, 91191 Gifl ur Yvette Cedu, F'raDce " Univ. ofG(]UiI"\&efl, Metal PhYlica. RFA C~;REM,
When intermelallico .... o""..lina: under ronditions wbe.. the otomic order io ""rma nlnll,. dil lurbed f ...m iu thermodynomical optimum. phaM equilibria m., DO more be p.-.dieted frotrt the d_iaol he Intlro runelio .... N. v.r th. l.... u .. de r . implif,..,n, ... umpliono. one mOJ conl truct • lie .. fUllCtion, ployina: • oimil.r role for .... e ..ina: the reopcctive ot.ehilil1 nf v.......... p ...... : IIuo I.tter i. hued on mieraoeopic d.t.o .ucb u .tomic jump froqueuciN omd in"''''lomio: bindipa: e .. eqrie •• bul don not impl,. om i .. ternal entll"O. Vano ... meant for COD>putina: the obove ltocbu tic potential (direct .,Iution of lhe Muter EqWltion. Kubo onuto) .... p .... n ted . Eumpln of dyn.micI! equi librium pb... diqrem. with unupmcted tulu," .... linn bolb for FCC . nd Bee lI"'du..... Th. . .lev.ne. of Ibe Ibeo, ,. 10 pbue equilibrio ulldc r irradiotion or durina: bia:h ..... ro boll millina: will he ullNll
(Invited)
ATOMI STIC SIMULATION OF RADIATION·[N1)UCED AMORPHIZATION OF ORDERED INTERMETALLlCS . " Ngbj 0 1 1m, Argonne Nalional LlIbonloty. Argonne, lL 60439. and Michael I. S.bochick. Air Ftotce In$l.ilute of Technology. Wrigltl-PanmOll AFB. OH 45433 . Recent ",orren in molecular-dynamic •• imu ll tion .. udi .. of ' 'Y .... Ui''''-I.... lmorph<>ll. transition induced by irBdiliion il discussed, focusin& mainly on ordered intermellllic: compoun..1$ 01 the Ti system. 1bc effca of ;".\iarion was ,;mutlled by IIoc generarioo of Frenkel pain.. which in both \he fotma.ion of ilable poinl defects and chemical disorder upon defeel munaal n:cornbina.tion. 1bc uocrgcti¢", thennodynlmie. mcchl>licaJ. and _on! responses of !be compounds during irndillion ......., determined by mmilOrina: the clan,..,_ in the sys!t:m ent:fJJ' .1O"'gC, volume ex"",,;,,n, pair-«lrn:lalion fu nction, Structure I"¥tor, elas(ic """."tanlS, Ind . Iom projec.ion •. I, i. {<>lind 110 .... allhou&h ~hcmical disordcrin& i ",,~ 1M sy_ cnet"iY I nd ..... Iume, the amorphizin, tn.nsfonnalion is only initiated by tbc addilional buildup of poinl llefcclS. Dmin& inidi.tion, Ilani~e JOficninll occurs; 01 lhe onset of amorphiZiIion, !he War clastic constanlS dccn:.~ by I faclOroi -2. ina~menl wilh cxper;mePIaJ observations. ·Work supported by lbe US Departmc:nl of EnerJy. BES-M.terials Sdcncc$, under ConInlCl W-ll.I09. En&- 38. Ind by .be Air Fo:rce Institute o!Technoiogy
c..-
{lO:OO ... PI _l
..,,,,It.
(Invited)
THE ROUl OF POINT DE~ IN 1llE AMORPHIZATION OF IHreRMETAUJC COMPOUNDS'. D,f. J'edm... Metoll aDd DMoioll. Ook RId", 1'11.;0...1 LabOnotOoy. Oot Rieltt. TN 31831-6069. USA; JA C:ot(l, hul Seiler,.. I.... i'ul. ~DZ ViUitt •• SwllZed .Dd.
c..._
"""'1'0"_
(4:10 p .• . )
lIOtFtCI.u. mtCT or !,o. IISl'BSIIlIII .1.1,0, COATED WT-lIESlstAJT WJ1fS l!J.Lil.tU. ltd IIUllorl Yotl . '"UOIoi iUeoTC~ lulll.U ror !letals, l-S-12. JOh.f,U'O. 1I... rot •• Tot,o 153. J.pIO
y,o, dl.perttd ..... 1- r.. hl •• 1 .Uo1t I. 'fell lao ... to be b1,blr "'Olecth. I ,.io.l hl'~-t"l't .. tu. oIJdUJ ••. Our ,r.. lool \IOrh ,boll tb.t tb, .,,0, co.Uo, 1'10' 00 Y-JJ, dl.perHd allou I. I l ••• dII ....1 .. d p!"Oltelhl . '" 011,1"'11 Ibis btDlritl.1 Ilhe l of I,D, to t bt rollowl .. two lottrbcJol ob..,ntlops: lb. SUPlltUslOD ol Ilu,fleloi IOlrel.lloo of S ..d lb. lo ... \loo or dHru lop border d lbe cDltiO' 1... rl .. I,lllalerl.cl . 1... 1,. tb, ..&ll1.lcoi .Io.tro. 01.,...s(Opr bOl ,erlol,d Ut tr.ppl .. or S IIr d!Jl'trstdl-JJ, pl'llei., .nd EN! 1104, abo., tbol Ibl dlfluloo. of 110. .nd C, 1.1. sa AI,o, oo.11nc 1',l r 1\ lW~1 II IUWtfUfd by dl sl'trsllll-JJ, . SOIIPDrU" erldeoco to, tb. Iitto, ob..... Uol ~., beel obtolntd IIr t bo slMlotion upo,l ... t uslll .. 11,0,1,0. cIoabl. CDlUII Il1f '. Tbo o.ldo 0<.11. rot .. d 0:0
1.I.trO............. of o:bo: ..1. " ""' ben proposed 11111 """''''Y.lt!tasliUoI pol .. onkr ca. lII~a~latl!yud..:cd roo ""'lUll<, l<:aoIi., to (I« ... t>o".'iat poI>t. okfecl buildup '«jui,ed ' 0 dQlabilize ' K ,h-oClWc. Tbt .I.ttiilily 01 "nCI"'Y Inren,I,lol poi .. It! Ni,""a"", NIAIII .. ""10:1 loy """'pUI.. 'Imulo' ioo. no. ....ul.. lo .. ' ,e COJ>dllClcd 111. 1 I'" DYNAMO mde .Dd .... e_deII _tom poIeDliall
101,
'.pc...
".t<
"""m...
Sandia. Tbo: dkaor .... de"a: Ol(I« .. icol onSe. OI lh. " .bililyo'o I'ICI1>CJ'.lll,emi.ia, pllr 10 ... I..,ed. aus[C,;n, of poln is .Jonuloted. • R....,
Ene' I1, .nd<:r Con'''' DJ;.AOll-340R214(llwUb M.. li. Mlrlelll EDerIJ ~I."'" 10"... , IDd in PO" loy Nllional Ene.~FODdoa.,-fO"'" u _ N... i l l aDd 'I« Fond> N.. iooll Suisse ok 10 Rcch
"'.'na.
.... _ No. DB-ACM-IMOR2I'Oi). ..........,.Il00 U. '" O " -....Iab • _ _ .... ,.".tIy.1ho U - IOpobiioIt or . . . . . . tb. poW_ ron.. oflhio -'bIItioa. ... .uo. _ 1 0 do .... ror -n..OIItoonDod~hoo_ · --.lbf · _ofIhloU.S.ao-
U.s.a..-.... P""P"-.-
TMS Fall Meeting-2S (10:30 a . •. l (J~v l teo") UfIIOERSTANO!NG THE LIGHT· INOUCEO DEGRAOATION IN A-8tH WITH MOLECUl.AR DYNAMICS SIMUlATIONS· ~. U~ Fle3card"o Cln, ... 10.. , SI'~ U..... ... II~ . A_I. IA 50011 : I. Kwon. o.lJa,\""!n l 01 Phyo.ic:J. low, SlIIle UnI"
r ile S'"'*'·WlOI\SkI , "KI Of " " IIghl-indl.o:ed 6e9radatjon in rry~1tId .mo'pholl' lllicon (• . $i :Hj Invo"'-. ..."..Ii:I'- Itanlformllion Ifom a ..... ~ cItnIiIy ph... 10 a pnaM MIll Ng"'" denIIIy 01 gap 11111 delem
alld low.. pholOCOnducUVlly . Alome mecnlnisms IIndetlrlng 1M IOgnl· be ...".,td ...", moIeoI .... 1fYnatnicI cali:l.CabOnS. A IIIIW
Inr;U:ed eIIecI will
Si·H ~S$bI ~ ....1DInIr; po\enUl "" """ deYeiopecI. n .. SHl ..-.:I Si·Si potlflial . - I I have beln "ti;led 10 descri>e a-S;:H models c:onIaining bolh ~ and dirry""de ~ $pIde1. ~Iions 01 local lJiCi1alions In lr..S. .~ netW'OII",rlmlllt&1 I"tu,n 01 i91'l-InduoId devradalion.
p."n,,"
pruenlild fO( !he do:fomu.tion of pu~ Cu, Ni-270 and stainless JIeI:I poIynystals . • wort pcrfonnco;l under \he IUspkts of the U.S. 0eperImcn1 of Fncr&y
ca,so ..... J I'tI.E.CIPlTATION HAR.DENlNOOF A 8ETA mANiU M AU..OY 8Y7HE Al..PHA . TWO PHASE.: b S OuiI[l'Dtthj+ tnd O. A. Koss. Dcparuncn, of MawrialI 5acro
Mow mcwcablt or near·btca TI oIIoys .,.., ol_w 1ipiJ'icanc:c IIo!auk 01 WI ~'" capabi~11 ",hid! ckpuds 011 1M bmaIion 01 aIphI.pItaK ::~1a. IlIIhc. pmenllllllly. -.e fqIOI"I ini1ial ruuIu: whidt indicate tIw iI is 10. hanSen. beta 1'1 al loy, Ti _23Nb· II AI (II"), willi ....,.. . .-..0 . precipiwn basal 011 ny\1. The Ice hardmin&. wbio:b is quilt ~ 0CCUfI IM'". wide ICrnpCnIln .... ce willi maximum Iwdn&w ~ .. S15"C.. Bodo TDoI and mechanical Pf'OPC'I1 obsavoUons -..ill be prqcnlld. The~h
(11,00 a . •. ) MODELI NG or CONSTITUTIOHAL LIQUATIDIf D~THG RAPID THERMAL PIIOCf."SSlIfG: a . II,db.tri&bDu and R.G. Tbomplon, unlveralty o f Alabl.. at 1I1noln\ilham, Universi ty Station, 9Ir. in;ha. , AL J 5 29 ~.
Tl"Ie ,dcroltruc turlH IVlnt l that occur In the Vicinity of • preci pit ate durin9 ra p id thernal eyell n; con sist of (a) partial dLs ao lutlon of the preci pitate In tne lolid Itate, (b) l1quatl o n at the pr ee lpltate-n"trix Inter fe ct on heaUnq above I). criti cal tell.peratulCliI, (c) e ll.lnetion or th • • • ta.tebl e concentration <) radl e nt. eft.e r comp llt. liquation of the I n the liquid prlcIpit.te, and (d l tn t l olidific atio n of tne liquId during t ile coolin; cyc l e. TII •• e aicro.tructura l . vent l ar e sod. l ed r or an intra9ranular preciplta t.e by num. rlcally solvl l1<;1 thl bounda r y vIlul probl ea involvin; lIeat and dittusion equat i ons usinq a tinitl dl It e r . nc. t.Chn ique. Th l aodal re s ults viI I be used to qU ' ntl fy the pheno •• non o t consti tuti o na l llqua tion a nd i t . r e lev ance to hot cra c k lnq d uri"9 rapid tll"rm.o l proc.slill9.
_
iIIpPOI1fd in pan by Il~Offoc:e of Naval
~
(9 110 •. • • J
T IP EFFECT OF NANOINDENTATION· Chyn. Wtj Sbjb and June. C. M. I..i, M.teriall Scicnu P r<>yam,
~l.
of
Mech~ial ~inee,in,. Uni"" .. il~ of Rocha,"",. Roeha1.t:r, NY 14621
The blunt tip &eomet'~ of lhe 10 alled Qanoiodente, il modeled by • cap of v.... iou. radii. 1'k relalion bet_n . re. &rid ~etralion deplh of the iod .. n,""r ii C01l\~ .,.blll with experim~nlll ....... C!:I if !be .adiu. il aboul 1.1) !I,n. Simu lation of in: of nidel i. obu.ined for • ti p ,adiu. of l.0 I'm. Th_ findin p , ,,""I the Deed of a ,eoJ nanoindoonter for mechanicll probi", of eJrt
'Work IUpponed by NSf throu~ DMR·8819816 l 'hlO •••. 1
(11:20 a.a.)
1I0MTE eAALO al ~TlotI or GMIII GItOIrTJl II( TIlt PRESENCE or DISSOLVI HC SECOI(D PHASE PARTICLES' L. r . JohDson. B. Radhlkrl l hnan and R.G. ThOllPlOn , Unlv.rl i ty of Alabama
at 8inil\9h •• , 15294 •
Unl v. reity
Station ,
lininghas,
AL
Mont . carlo tach nlqu . . for Ihul.tlnt;! iaothe r . l '1ra1n qro vtll I n 2-D and J- D ar a v e n d ocuaented. Thl . . t achniqu.a h .... a prevloualy bean applied to ei.u lat. ilothe~ l ;ra!n q rovth in ai"91. pb.a • .atarials .nd tvo MUriall in "hich the sacond phe s. part i c l • • • re In.oluble. In thll paper, t h. technique has been Irt.nded to include alloy ¥Y8taaa sUbj@cted to tb. nal cyclln';! and In vhich the aacond pha . . p a rticl •• are aO lubl • • Tile Objective ot thi s re. earch I I to . illul a t . th. lIicro.tructural . volution in the veld heat afrectad lon.(HA Z) o f the. e alloYI.
ph...
DEFORMATION MECHANISMS I TMS General AbstrliCt Susion Tue.
Room: 2.06 Cindnruti Convention Centu
8111k I,,·SII. C. a(k Tip Dislocation E.oa iS$l nn ObMryatlon, in Alkali Ihllo. S,,,,I. C '~ltll. T . Fouke I1Id W.W. Ocrbcrich Ilepinnwnl of ~""cal fn,il'l«rifIJ and Mllai...b Scietoc:e. Uni_lily of
Min_
Minneapolis. MN S$(5S
'*"
Thm has a JIW cIoIl of _ I iIr._ in d>e ~ oil kIIdtd CtK:t and aar;1r.. !ip em,ned diUocaI~ l'reYiouiIy. we I"qIONd tho: u.,etto< ~on of dillocation Ioo!> ~mlasioli in bulk N.a """'" crylllals. aDd icltntifiecl Ito! ailio;a) IIIOdt I IIr'ftI jnlellSity (go emission. In d!iJ Wk. we ";1/ lIft.s all ~nonl of !be nillc.l e-millioa puarneten and II!IOII\ttty of em,tted .hp for. /\limber of other alb/i hal ide IifIJle cry... lyilCmS. The idefttiftcation of likely aar;lr. tip nucleation !>ira will be dilailltld,. weI/as ObJa"V1Uionl of in!etaClionl of cnc:1r. tip emilltid dislocation """1" willi """lures IlICh all _ d philli pulicle$. Comparison will IlIIlTIadI: 10 rfIOentiy developed modell.
"d,
1~ 'SO •. • . 1 SIMPLIF!EO PROCEDUnt: TO OUTACN AN ORIENTATION FUNCTION fOlt FIBER 1'EXTUlt E,' n aopina H~ ud C. R. Hou. ka. O':p .... lmcn' of MA' l~ri« I. E,,&l neerl ll!. ViI, inlA Tech, 81 ackobur&, VA 2~O(iJ; Salj,h Ftao, Wri,ht L .. bo'Morie. , W PA r D. OIl.a.l 33
A mcl hod il , i'""o 10 o~lain lire oriUIIINm (unction Cor . ~bl'Cmion.I x· rlY powdo, dilfr..,'omele, will>out . peciat allachmm ... An ~umpl<: ;1 Sivon for u u '1uendoed C~·Be ~1I0)'. The ' '''lui.e.I n"mbe, of inle,raled in,""",it '" hom of diff,ent orimlalion i. ,d.. u,d 10 the dq,oc ol lh • • p _ of ,"" orienlat ion f\Ln~lion . A llit CO
.,t",,"
with Ihe pole filII'" "'.... u,ed by . CO
Session Chaimum: Donald A. Koss, Dept. of Materials
Science and Engineering. The Pennsylvania State University, University Park, PA 16802
' SpoouoraI by NS .· 0, ....1 No. DMR·8SI80l l .
(10 ,10 •••• 1 (11,10 • .•• )
HIOH-TEMPERAnJRE PlASTlOTY fN FCC POLyOtYSTALS ' $bult'!!!l C!ca and U. F. Koc:tl, Cauer for NaIr:ri&I.I Sciente, Mlil SlOp K76S, Loa Al&moJ NI.Iior,aI Labor1Iory, NN 1754, A
pr!XIeII~~ for
lellin, fI'd JM.IYJiI is deJcribed
~ dicitl
!he maIeri&I
~ WId 11 ItrIiIl nle$ biJII _&II to mUz diffusion WI ummporWlt me<:hanisrn. As a finI 1Iq:I. I limple tcaIin& prooedlUe i.1IsaI on oontinllOUl _ atraiJI CII1"Yea 10 raluoc !he dill. 10 eucnti.&Uy one C\II"Ye: \he diffcmlti&ll:o:l. 1IOrT1IIlU:ed IIardeoIin& c!iqnJn. A ~Rique
panrneIa1
foe defomWion It dcva10d
,~of /!lis kind iathen UIIWmed It 1M "ainalevd; i1 reIJec:u!he meclIaniS/llll of batdenm, and d~ R!OOYtryi IUIU~ effeo:ll follow from simlli&locl in1CrJ;nlion _ I plIycryllll. TIle depcftdcIIcc of ItIe ainl puamettn 011 wnpenture WId linin nle follow. IhennaJ ktiVlOOOn rules; a wUq\le c:urve is obCained on a diqr&m of norma/iz.ed 5UW ~U1IIIIIOrlIWiz.ed ktioalioa mcr&Y. It ana-., c;1tapOI&tioo 10 wnperatura ItId w.in rates 0Ulside \he nnce of ......... mnentl by ;nle7JlO!a~OII 011 ilIe tacllICed diqram. Ne'" daca ",ill be:
TEITIJRE !II DEFOIII£OI ~" ~~!~!;,~ Unlwerslty. Scllool " 47907.
J. a_n, Purdue
, West LAflJ"ette, i M
Te~t"re denlo~nt durillg sll p-bned defor.l tlon of stnl,hrll un. les such u A1zOl Inri "'" hIS been Investlg l ted . The ' stlrdy IIK1udes two puts: (I) tIltorttCul sllllllu ion of te~_ turt «v..10j)lllMt t.l>f"O(,Igh dh l or:nCon- b.ned lIIOdeh • • nd (2 ) v.. rificIUon of $C .... litlon rtsulU thr"Ollgh experll'!ents. 80th exper illenul Inri SlrrlUllted results suggested thl t dlsloo;ltlon slip ph~s. phOll1 role Cn tf~tllre deYelo~ t. Further. resul t s aho ...... H\ that dtfOf1ll6tCon IN)(Ies Ind dopl"9 el_nls cia h• • •• ".,u on t ..xtu .... de.elop!llt!nt In H IVC!Ur.1 cer . .. lcs . Th is project Cs supported by the Matfonll Sc\tllce FOIInd,tlon Gront No . 8819186.
26-TMS Fall Meeting I IO,JO •••• ) !"~rl . . nt.l ~el"Y.tion.
.ieromeehanicI analy.e. lI. inq in .. itu of a train in • ...,hanieal - .ic...,a copy .y. te. s t eHn J, Cgyey, scott Ifoapler, aden Xnou r r. and. II . Jayaraae n , Dept. of Mat.rial. Sei.ne. and ED9in.erinq, Un iv.r.ity or Cine in ... ti. Ci nc ln""tl. 0lI ' ~2U -0012.
novel .ervOhydraulic ten.tle/ faeiq", • •tlq . in.telled in a .ca nninq .. lectron . 1cro_~ to r in-.it", o b.e rvationl of d a.aqe with point-or- inter es t a tabillty On the I p.c im.n is to s t",dy the fu ll -field I train. Thl e b .... d. pou ible by quantita tive iaeq. analy .... or • ~ • .,rids etched on the .~ci ... n .",rface . Se va r.l a"allpi . . of the s tr.in • • ppin<;l, includinq craCk tip in a .onollthic • • terial, contin",ous tiber reinforced composie., . t c., will be pr. a.ntad. This novel techniqu.'s pot.ntial for nl.tinq .icr o -d.. fo ...... tion at the qnin l e vel to thl< _ c ro d etonrootion pred icted by mechanics will be dbcussed. A
"'. ad
(10 , SO a ••• )
Pt.Unc now AND D ISUXAnON STl.UCTIIUS IN T A.."I'T AWN CUIIDE:
OUOaMATlON AT LOw AND IN'1UMEOLATlTENrnAT\1U5 C. KIN. and P $ Olu uMoN Dept. of MouIlu-.y, MKhanics wi M..,r\als Sc:icncc. Midli... SII\e O.i •.• E. LanIiJt& MI .... 23. 01: O . O OTTn!ll'I , iJUL fur
~_ine.
Mewlk. urw:l MculIp/lysit, RWTlI Aachen, FJtG
(9,20 . . ... 1 U TiQ/t cuel C.OIml IDlAY IOI. or A ~ev SIItGU ClIlST"'- IIICUL WED $UrDALLOY: Sudl I. Pu t . ..,IIdI . 4bblJh SeDl\lpU, WI}"I
a1.,.
Sc Io Mlflc 1. .luch Labont"~1. ,,,.4 11000 . Co. , too • • loo .... , III .auI; bo MI"U , Cln ...... "".tol"" Co.p .• lIu. kel"", III 49443.
to_.., ,..
, .. 1,... t . .ck ,<_.b bol... 1or of • ""'1, dIYIlOlH'd 11",10 cry • •• 1 ftl <: ~'" ba,04 up ... ll", (o!sX_I>C) IY. bun . ,!ldled I n botb . _ ".porot" . . .nd .l e ~lt.d IUO·C). CIISl- 4C if a ,"u". I, 4.~.l o pod ...... Id onod ~ ...... Io. aIo."".. I . 0" dl<>rl", d.M" . . Th • • 010 of Doonl,," h te P'CIIOU hl.h t u pon,u Tl e ddl H e" and erup ... h',nco. TM, tl on Id ll l1 , . "Ued .. , .. l al for "'"1 c d.lcol hl. b ••• p.... uro 'pp ll catlen. 1nc ludl ... tu.bln. blado • • dhka. nd ".cloar reac to ra . Tbc ,,,11'" "rod, , 0.tlntl<10" "u bun .. ..d104 In 'he th.,.bol d " l i on at both ._ t~ ,"" . . It ".o In.d olova," • • .., • • •• "... In ooddltlon , .ho lofluonc. e f . Iuoo< n cturo on nUt .brubold lnl.uo cnet • ..... t h Uti, .. ..ell II en t ho , .. IIU' t ~r .. bold . .... . n.lold. n.. .Iet_chant_ of uoct • ...,.,tb pr .... e .. hi• • loo boon
ACWAIITAC.l Of IUoPIDU SOliDIfiED TITAHllI'I·8ASE IN JOI NING Of TITAHllI'I AllDYS
nun HfTAl.S
A, RJb!Oklo , lletglu Prcd~cts, All hd · Slgnll Inc ., 6 EUt."'5 ilold. Parll pp."y. NJ alas. A f .. 111 of npld l y501 Id l f led U tlnlu.,tz l ron blS I ~enIO. 1 uorphous str-ueture IOI!lch rllults In Id .. nhgeoul .l101 .... tUbll1ty, .IUng chlrlctl r tstl es 1114 h'gh Itrer>gth of JoInts. Tht detailed ISlu_nt of tt.. .. ne. N£TtLAS. IIU ·SOOO strlu Illoy Is 91v,"" ",n"dlr tll9 sPIC"'cs e f brll lll9 "IId_nUh and pr.ctlCI for such u t l.e ~..e _ his IS " • Ind ul t lhnl.·bue .110YI Ind other s. The Inlu.t!o~ .ad (holel of pot.ntlll fll l .. r _tlls "nd the Jell'c t l on of t l. ·t~rlt~ ... brul", p....t,rs IIftdtd to prodUCI opt I .. , bru~nU Is ..dlllith Ntflrel\u to rele .. nt rlnilly, patentl.l Ippl1utlens of thut .. terl.h In the nur futun I Nt dlsc uut
.ll oy phul dllgrws .
DEVELOPMENTS IN ADVANCED AEROSPACE MATERIALS III, Nickel-, and Titanium-based Materials Sponsored by lhe TMS Non-Ferrous Metals Committu
(10,2 5 a . ... )
TuesdilY, A.M. October 22. 1991
r...., ..1 (TI · U I · 4Y I nd rt · lAl .t. 5VI IIId otlolr t lhnlu. d l oys ITI brazed uslr>g new r apidly solld l" tg. , be JOint struc tu re/propert ies relationship Is dlsCuUed us i ng b.u_" t _ tall"'i1ra p~y lad phIS' Inl lysls dlti .
Room: 2.11 Cincinnati Convention Cenler
Slssitrn CMirmm: J. Andrew Walker. Advanced Composite Materials Corpor ation.
1525 S. Buncombe Road. Greer. SC 29651-9208 (8' 30 •• •. ) DEVF.E.OPMENT OF A Ni-Cr_AI OXIDE D(SPERSION Sl"RENGTHE!'JED ALl.OV . J M PMIc [nco AI\o
,esi_
·· INCOI'IEI. • a , _..... 01 .~. Inco ramify of CDOIIP"niQ.
BRAZABlllTY AND NWIAMIW STR(NC TH Of TITAHlwt AllOY JOlffTS PRQOOC(O USINC IIEI/ RAPIOl Y SQlIl) lfl{D IIETGl ...S. H .2 r. BASE
" .LiES METAtS
S,G, pounds ,ad ....
Rlb! n~ ! n ,
IllitgllS Products, Allled 'Slgn,1
11K., & Eutaafts ROld, P,rs l pPlny. IIJ 01DS4
(10,5D a.II.) uncr Of MYDlOC EN ON KECIlIJi\CAL PlOpanES 0' OXYCEX-StllNCTIlEXEll
TIfA."I\~.
r. I. nonD( .nd I. II. !IOLdhn. lie. tnlv... I< " M""" on . n 11H'-1191. Two .1<",1... aUo,-a. 0'" """ ,",nl... 0.0bIi! .ad .~o otll. . 0.IS11 e~n-' ...... "b... ~ wlth .pp r onl ..... l y 15 ~:-J.,t o ~ ~ydro'.n. 11>1 effec, of hyd.OC'" "" thl fUUI- nfOtn curve., loopact rul ......,o . ""'eb ""'"ltlvity. tr.e'u •• 'ouaM.... and f •• lqu. p. "", proMa •• e r ",d,ola" ... e ... l, aUee .. ,,,- ChIrpy V-lIOt~h 1""'.0' on'''IY p •• tlculI . ly to • • lMt O"Ylon-bu r l. , 1110,- . ¥hila bavtnl I1ltl • • H.e, on .~e 4ue olU . , d.....lned In I ..... U",,,-fO"
(8:5~
..... )
INC k EASINO THE HIGH TEMPERATURE STR EN GTH AND MICROSTRUCllJRAL STABILITY OF INCONEL 711 J H Howard . P.L,
Smz. and I.K. Thn, The Univcni.y oITeus. Austin. TX 717 12
lntoDe'l 71'. I nicltel. • bue IUf1Cralloy. ';urralll~ ICCOUncs for ~ 3'''' 01 all wrouJh! f/lpmJloy Iisqe. lIS IHeS aD,e fn:Jno rotIrin, dhb in rhc boc II.Ilcs 01 jec enJinel.1O fUW"lm wed in Do,o;Q ructon. hs widespIud 1JIJIUI.1Iowcva. if beia, jcopudiud by dx: demand for mM
.h_
"'pc.
run f ..... Irnbicn.lCmpert.ure up 10 14SO'F __ linn ~''''''r "",",til and. SO'F cellin, Improvcmem 0>1(. 11'0'711. Lon, term Il~S ' uplure lUIS an: bein, conduCl«lIO eon tinn or oXny ... improvemcnl in lifclimu as woll as enhanced miclO5trucrunJ l iability uDder s~n ' 1ltmpcrllurel Il:oove 1N7II's oper.uing cei lin. tcmpefl,urc unde r SlreSS. We wish 10 think the Statc of Tul$, Prall &; WitM~. S abcoc:k and Wilco~. Speci.1 Meta" Corpon,ion, WymlJl Go,don Oxopany, Jnd!be !'Jippon Mining Oxopany. for suJ!POf1in,this work.
(11,15 a .... 1 UIIIlt.t...,.D rlUoCTURE TOI.OCHNE$S '_EllTIU or I'M Ti-tV_5F._I . .lA1 A.IIO I)j;jjIVA'l'I~IQI, C.V. yoU ..... CruClbl . ""tIs. Corp .• Cruciblo l1li. 1'
..... P.O. _
no.
'l'1_1V_~._1 . .lA1 oUoy I. ~ _, . . ubI. beto U~iOtO,_ ~IlOY that can bo hea, u .....ocI to "'<)0 bl9b .U.... th.. St.... g~h. ove. 100 1<11 III", _ n .hovn with _ . ., . . .I d ... l ductUity. 0'1 9ino l ......ch ....... rfe...., on i ...... ~ _tollu . 9)' II'" ... oducu . l>u~ ..,.. p......t1l.1>q .uul.. . _rfoeld " Ith .h. powder Mtoll u.qy apP ..... ch. Th. 1 ...... ~ dd i hon 10 an oHoe.lva ...... g.h." • •• l>u~ Mg_ ',gulon ...... problo .. du~i"g Ineot IOlIdltic. t ion. A PM ap' proach alllvlated tho l""'I" particl... Th • • blll ' ~ o f . lMt FII 0W.OICI> to ollow
IYln gu.to .
~d dIHon.
of i.on .... odd"...ocI wIth live d.tlv.traUG", "I' W 10
u .. ao of till bode e<>oopoatUon ... Itl> Ir ....
<"""...
f._..
_t
,,",r".nt. _ . _. ",bui ... d th<'00><11 ,nut 9"1 .tQaiu~ion. atI
(11:40 a . ... )
ffiANTUM·BASED 1N-STJ1] COMPOSITES; A M BUlg!! L S. Chumbley. Ames Labonl"'Y-/lowl Stile UniYftSity. lId Wllh.lm Hall. Ames. IA SOCII I
1ft t«<:n t run. in oit.. COf'PC' ''ISc:d "ompoti"" .. ith .anofilamcntary mj' lOSlI'II<:fIlrCli h.~ been formed by hcayily def_iII" • t_phase ca,t IQ\ICIIR.. Thuc CII.-.posiIeJ llave. be<; ~nia, plwe eNb. Cr. Ta, or Fe) in !he rcc CII matrix. Allhcir loi~ Jeo.d, q/ defOlmlDon pmceIIi.nl. these CII-bucd alLoys' ultilTllle IeIlSiIe slA'ncths ~ 2000 Mh. In this stlldy. titanium 01...,. have been cait. utruclcd, and ''''"'&Cd in .., Mtempt 10 ~ such hi,h ~Rllh. DUOfilamcnwy stnM:lutQ. Sc~UlII alloys hav. be •• studied lndlldilll ti .... iuID-ytlriulll lJId th..,ium-<:<>pper. Tcm llc lelll muwred the 11ft"lth lJId ductillty of the al]OYllt vaJ)/inl degrees of deformation ...d found thll whik Ihc I trength incrus.ed. the amount of IUI:tIlthffil", ...". leu than ~t would be expected for in-liN StftnCthcnin,. Scannin, .IOCtn)ft m~y and tnnsmluion .lectron ~opy were used ID .QrnIIW. ~ rniI;rosInacturcs 0( t!\ese heavily (!<'fonncd n . 'lOys .nd revealed that the fillment J1n.ely,. de.e~ durin. defOfml~on ..". diffennt than in the Cu·bI$ed com,posit. .. This dirrerence in mofPholon il bcli~cd to be lhe nolson for the lower -phetli... °()pmttd for !he U.S. Dept. 01 Enc'l)' by Iowa State UniVU'li()l under ~tna No. W·74QS· En.·Il.
KIRKENDALL EFFECT SYMPOSIUM ON INTERDIFFUSION AND PHENOMENA THAT DEPEND ON NET VACANCY FLOWS I: Historical Signific.ance of Kirkendall Experiments on the Understanding of Diffusion Co-sponsored I7y JM ASM-MSD Alomic Transport Co mmitlu and ASM-M SD History and Archeology
of Malerials Committee Tuesday, A_M. October 22.. 1991
Room: 207
Cincinmli Convention Center
Sc;siLm CNzirmm: John R. Manning, National Institute of Standards and Technology, Gaithersburg, MD 20899; Martha Goodway, Smithsonian Institution, Conservatio n Analytical Laboratory, Washington, DC 20236
TMS Fall Meeting-27 polaodly by ttl. actIon .. r latel_ .sefoct ...... b ........... i . . .nd/or 10..... 1.101.. ro . .. loudy u. • •• boc..orc . • he .ppe.ra.... of _ 1<1. _c.""".ny ' " .... t lIrhn4all .hit. . .h ...... d .ho prod.,.,l nanc. of u.. voc .... I.. . fT_ tho .boory .1"., the laporc.ne. o f !' o f Sd '% a" .nol0lo", In~ .. tl . . t{on ... . . . . rl . d .... t for. fr • • ·. I. ceron .....1 >'h.nln It .... de .... n . . u d that tbo • • " ..... y ......o{o. "-Id III 111 p.",b.bll1ty orr.. _ I .........c. tv.t lon for dIU .. do" ••
t._..
(10.20 " •• . ) URKEI
~!
''''''ta
Tho or u.. Kl Ok .ndall uparl.. n .. "onnl c ..d .. Itb tho \>altaf tlu. uy.
...... 1.... le cryotd. . Other ~on flt c <1 th . ..... . . I'... lon . • tc. Molt 01 tho q""n t lt.U"" ..... e ... wltbln • d.t."" •• nd the now Ide .. O.Uphd; th . . . . . .. .d to h.ve \>a.1I • p ...... tlc "" . d to ""co pt cM. And ta .... n dtlen -
w."
(1 1,00 . . .. . )
Slnt. rln,. C•• ln Cro .. . h a nd lIt!fuolon; J E au tk • . Con,uttan'. (C[ Co.pany COrpo. . . . . . . . . rch . nd n.. .... l o_nt C.nt ••. S.honecudy. KY. lo;l nd.)
At .ho tl_ of I(\.kenda ll ·, ... 1... 1 wo.k. ncry.u lll uUon o r d.fo ...d . . ut. h.d .... n ..... 11 afor, I . .... d . .olll ....od thac dlff ... lon. "thor .1'1 .0 pl .. tl. Ikfor_ tlon. v" the _ ch.nlo. by whloh . holnI
COMMENJ'ARY ON 1l{£ EVOLUTION OF VIEWS ON DIFFUSION' IN METALS. !ID.kl.llII::ulIlIIL Division 01 Applied $dr_f. Harvard UaiveTJil)'. Cambrid.c. MA 02138. AI the time 01 the Kirl
wU ~rr~tCd prWomi • .."ly by n"oJ>C)' Iftipatioa ~od _ in the plIylics. but IIOC in the rllel&lJurP:&!. oommuni()l. The ~ prior ID Xlrt.ndaU for the pbyllicl view will be summ.ariJc:d The KirteDdlJl u.perilDalll proved thai ncancy or jgl<;Qtirj N-M!C mcthani_ ....... ODRCrib.".. liJllif'lCantly 10 di rrwsi~ rn.IIlpon. The dcmonstnuou fol]owiJl, these Uj)(rimellil. thll dirru;on ill 11Gb!.. and ]lle lnrllilion _1111 oa:WTtd IIC'Cdom1IwltlY via YIIC:InCics, k&d D &&I~; the ~VUlIiooW wiJdom boc_ tIw diIlusion 01 ",bstilUlionab: in mctlll OQRIIS by vKIftcic .. Only ]11er .... s it ~iKd tUt IIIbstitution&I trulSpOf'I.in I 1111",. nwnbcr of alloy SyllClIU iii .ff~ IOOl lIy b1 interstitia) mechartimu Ji~in, ri5C 10 !he pMlIOQlCnon of "fiSI dirrusion . Indeed. in SOITIe 0( the5C 'Ylle"'S dirruiiQII ooc ..... by the neIr-«/llinlcttt 10 dinlct intm:lwtge. Q~t.b
p~valent
au
(9,.0 •.•. )
,,,,,.n
'*
WLY USEAAOt 111! ~1U;£ItOAU. UTtC'r ; \I "lIl1fH . I\.o .. ~hu .. « , I",tlt" •• of T.e",,",lol)'. Dotpa ....nt of Kat .. lola Schnc • • nd Ent,' .... rn • • CUb rln t~. ~lrb"""lt !tr.t~.nd ... ...,I • •• d ph .noaeno con b:pnl .. nt.1 r .... h • •nd _11 .. III ......vl .... <1 fro. .n hh.<>rlul "" ..p.ceL ... .
(10:00 ••• . ) VI,WCID .o.liD lIl'IU STITI~U: II Pply!Ocbnlc loltity" . Troy . 11'1
,..hlp'
_n..
tho lOOn
.. n . .... tho
u-.o..
"'w.on Darbn' , t hoory .0<1 oxpo
1>"-""1 . . . . . . .h ..
fifti es. ' M .o..... p •• of phydcal _toU ..
o" hid beo ...ppll . d
t .. odd • • ylt. . . . . nI!. p• • tio"b
(,,00 a .•• )
nobk
doao,.
I~o ... nt
D JIuoUoJtoo !!;cnud .. , 12110 .
l'pUcatlon of the I(I
(11:20 ..... )
T\IO MlVIES ON DIFFUSION ANO THE KIRl((NDALl [FF(CT IN SOliD I'£TAlS: Th~or Heuunn. l)ept. of ~tallurgy . Univ. of ~nHer. and Yolhr Ruth, Physi cs o.p •• • U,,;verlity o f Oldenburg . Gtnllolny Tile t wo OIOyl ts dealing with .olld .u.te d lffu$IOI'I in b; R,Jry s ingle. phose Ind .. ltiphfost s)'StetlS ue prodlKK .t ~ In st itute of Scientific Fl1 _s OWl In Gi;lttlnsen . TM first "'Wlt ,urts wi t h In in troducttOl'l to loll d sUo t. dHfuslO1'1 In Single-phis! systtllS ind iso_tit p"Un tlt lon of the Kirtend,o ll eff"t ...... , Hil laUd phellO!lfOll. In I ts Nl n "",rt U\oI ~Ir~e.dtll OIO~_nt Of.~l d \"9 I nurfitfS Ind rftlcrohlr
$)'stM Cu/Sb • •,., I ....... er af peculi.lrltln un b. OtIserved 1""I"tlll9 tNt It is anI)' the coppl'r .«-s th.t _1 9 .. t, thf"OU9l! the inteTllled l Ue pl!ue Ilye ....
28-TMS Fall Meeting
-. ... 101
METAL SCIENCE OF JOINING III: JOINING METALLURGY A: Micro.lTuctures and Analy.is Sponsared by TMS SolidifiaJtitm and PhysicJd Metallurgy Committ«s Tuesday A.M. October 22, 1991
Room: 200 Cincinnati. Convention Center
Session ClWmum: 5. A. David, Oak Ridge National Laboratory, mdg. 4508, MS-609S, P. O. Box 2008, Oak Ridge, TN 37831 (' ,)0 •••• )
INTUMETAUX COMPOUNDS FORMED IN SQLDEJI. JOINTS
PltEPAltATlON OF SINGJ..E.PHASE SAMPUS " : JtJ . SdIIefer. F.S. BilrK:aniellD ancI 1t.0. )1ucUs. MeulIutJ)r Oi¥ilion, NIllcNJ INtiIUle of ~ IW'Id T~, GaltIIonIIIq. MO lO899.
meuutelllClIII of !he irRnneUIlk ph-. which occut In solder I I but tlnce _ of !he impanarI pIwe. lIII'4liu ~ be fI.>nrotd dircaly from • by r",,1d IOlidificalon u melt _ 11dalion
OINCLII!'O .....
0ICdIInIcII ]II
·Wore. JIfUO!*d _ """",.
~
\oJ'" u.s. Annr
10l0I_ ...... ""II ...
_~
()I'f;co
_GE Ai¢n(t
ClO :10 •.•. J F\JSION WE.1.DING Of REFltACTORY METALS: C Y Bobino. Physical
and JoininJ; J,kwlqy OiYi$lon 1131. Solidi. N:uionol Laboralories. P. O. Box SSOO. A1buqoxoque.. NM. 81 115.
The ~Ii'aawy rnctaLJofGrouPI VB IIId VIB and!beir illoys
won.
r;bano;lf:riMj", ~ the!C IIIIlfrills Rlndida!eS for seven: scrric:e and Ipecialiud applielliol'Ll. Howcwr. lhe", 1fWCri111 . Iso IR"'"I' nriely or r;h.aJlen,a .,..jill fUPC"'! so both fabric: .. iOll wcldabilil'!' and the in-sc ... iec bdu.riorof wddmmlS, I11III1 of .. hiell an: ~l&I~ to !be dominanl .ff~ of iDlmIilW iqNri~ 1lIK wort reviews ClllTellt ulldeJt.wdinl of the p/Iysic:aI. and joinin. meullu'lr 01 theJc _ lib and J-lloys .. i,h cmpllaf.is on fusion ....klln .. Of ' poemr;: 1II1II:1'tI1 in theK ....!erial. arc IlLe role ofimpurities IIId alloy c:bemi$ll")' In fabrication and servia: .. ddabi~Iy, !be .... ltriaI proceuln,
_Ie.•, . n cu,,", mcllin, ... powder mer:.lluTJ)'.!be imponal>l:C: of weldin,
l)I'OCedu~. and ¥anlblel. and .. eldmcnl mcc:lwlkol properties and m.:lun: behavior. Spoctr..: e"""piea fl"Olll Ihe v&riovJ alloy ' Yilems will be used to il]nl1lue lilt: ,eneral rnellllu'.ical t /lataCteri Aics of Ihil ell$.! of rnltcrioll. Thil w«t per1"0ITTIed I I NaliOJllI Labonuories lUpponed by the U.S. Depan .... nl ofEnerl)' under eon,nel Numbe' DE.A0)4.76DPOO789.
JIIOCt'u
Sand,"
UOIJ~
•••. )
IiONeO\J\UBRlUM SOUOIFI(:.t.llON IN .t.VSTEIfllC ST.... N\.ESS STEEl. WE"\.DS', .I.!!!..Ytt'!; WId SA OM:!. Mel. . and c.ramicI 0MII0n, o.c ~ NaLionaI ~. P. o. eo. 200e,IoIS e::I7$, 0111< RiOga, nl 37<131
_Ion
TlW prmary ~ of tOIIdIIieIIion dLmg """'*'9 of ~ ,,1;IinIIss _ plays . . 0t0p0nM rOIl in _ ...,;ng m.l'IOIoCraclLing ~ of m . _ ... _ . m. IInII _ _ 1I1icn;IIoI1UC!\.Itto. RIIPkI_1on con II..... _ _ ~ _ -.nil, in aIaft _ • pri1Iafy !«I•• uncial' ~
"""*""" "". .
~
~ will til' _ 1'* !lito ~ II
tq..OIt)rIutn ~
...., ""!....... Io' - .
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PHYSIC.o.L IofETALLtJaOY TECHNIQIJIiS APf>UED TO w:6l.DINQ 0"1* _ _ 1MIoo:-io1Olito. P.O. ~. AlbuqIlORjllO. NM
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HYDROCEN AIISO RPTfOro' fro' ARC WELDlNC,
1ft"
Oep.,uroul of Mellllu,,, U " h~,"hJ' of ro ron.. , Toronlo M5S
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MII .. 111t Sclonn. 1,11'. Onll,i .. , Con.""
Th il pipe ' .~.i~_, ruurt~ OD hyd,ol.n IbJorplion d."nl O .. · Tu,slu· A.~ ... I' i" of nic h l. ond Shidd< f~.i<>K lin •. oro ,i>< .p pl'~'" I~",pc'.!.n: 01 In: ",.I!U niet .l .. u .,,"m'!>Cd.
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TMS Fall Meeting-29 to be In I"""rhnt ~.rt of tile growth proceu on thi $ facet. Growth on (100) f.cets OIIIY occur u growtn sPl r,ls. s t l!"PS or flat surfaces .nd need not ~roduce t .. ins or SUcking fa ults. Dislocations 4nd pOint de feets .rt found In (100) growth loneS. - Riselrth Jo i ntly sponsored by the II.S. Ara'1 Str.teg ic OI!fense Coalland under Inte r.genO Ag . _ t Ito. 18'J06_1562_ AI .. i th tnt ~ r tment of £nergy ; tnt Ex plor.tory Stuctles Progr4_ of Oo!k Ridge llltiona l l.bor.toT)'; I nd thill Olvl ,\oo of Haterilh Sc iences of tIie U.S. lIe94r"Ulent of £ne'l' under contnct OE-ACOS-840R2 UOO WIth M.lrtLn Klr le tt.l (nerg, ystellS, Inc.
NOVEL PROCESSING, DEFECTS AND PROPERTIES OF DIAMOND & DIAMOND-LIKE THIN ffiMS I Sponsored by £MPMD El«tronic {:; Photonic Devia Matuillls Committee Tuesday, A.M. October 22, 1991
Roorn201 CincinruH Convention Center
Session Cluzimum: 1. C. Angus, Chemical Engineering
Department. Case Western Re;erve University, ' Oeveland, OH 44106
- n . _ - t p < _ _ . _loy.
_oI0b0U. S.a..-...-. _ _
No.D6-A
0..--,..,....
(10:45 • .•. )( Inv ltea)
OIN4OMl SYNTHES IS _ AM OVERV I[II: B.B. R.Jth, 111.. 1 Research l ab . •
CodI! 6000. Build ing 43, IO;wII 212, WU"ingt.On , DC 20375-5000
(AbStr.ct not IVlllable)
(8:JO ~ ••• )f lllvlt.ed)
OIN'\ON() AND OIN'lONOl. !KE fI LJI S; POTENTIAL HEW TECHN()UIG1ES; John C. Atlgus , (,-leal Englnurlng !lI!parlJ!o!ftt . Case WfJ$~m Re ~,...e universi t y, ClfYtl ln4, OH (41 06 The abili ty to deposit crystalline (lIPIOnr:llnd
(!nvHe
ADV.l.NCEO PROCESSING. STlIOCl\IRE AND PIIOI'ERTI ES OF DIAI(IHD 1'II1~ FIUIS: J. ~ar.y.n. Depart .. nt of "'urlalt Selence ..,'" EJop .• !!o rtll Coroll.,.. Stan ~ I .. ni t y. '-Ilel.lI . !IC 27695_7919.
_.Ia..
t. l ~ raUnt ad"....,,, 11\ . ""thui •• , 'OCU' ;"I. ""d c .... ucu. h.tIOll of dl-.l thin f Hou. "111. toplu l .uas to
11111
(lidS • .•. 1
LASER PROCESSrNO OF DIAMOND ON METAL SUOSTRA TES
V Manoi and J. Narayan Department of Materi als Science and Enginuring,Nonh Carolina Stale Univers il y, Rale igh. N.C.-2769S. Laser processing of mu liilaye rs of copper/graphilt/coppe r has been employed to sYhthesi7.t diamond films. The multilayer paramelers; the thicJcness of the graphite and copper layers were varied by the number of laser pu lses used in !he ablation.5im ila rly, the laser pulse energy density and the number of pulses is va ried to determine !heir influence on the formation of diamond films . The films we re cha racterized by SCUUling Electron Microscopy (5EM). Transminion Eleelro l"l Microscop)l(TE M), and Raman SpedTOSCOPY. 1I1ol5 ......
DlMOllO
be cove r ed Include .... d.ulon and adhulOll o r dl..ond. rundOUf1t&i
upKu of . pludd JrOWth. no,oIc nruc t uu of d!aloeadon • • t.-\n.. and ot.ckin. r... l n ••1Od at ..lc U""'tu . e and propeni.. or lraln bound.ri ••.
O i _ and Cea"Mt. ~I t lon
bot a-ica\ YO()O<
~itlon
_No
R. Got. T. SuzukI! P. IoIUhlock. J IC • .tong... , p . Pi.C"QtIZ 0i0pArt..nt of tt-iCfoI tngi,-dng, o.p..d t'.....u ... ion alKtcon .ic.-...oapy (TO'II _ 1 . \ld ...... UMd to depoo: it "ilOlllOrd fllM and .-'tiel .. and ",n phl to wniwca. The .s.poe iU wee. cl>acacuci ud by T9\, Aug" £l actcon Spectco.copy ar.d ~cy £lectcOO"l lIi c.cOooCOP'i . ~ to c IICIdallir>;) c.au l ta on t~ tcanapoct, \lAMntion &nd c _ I ..... Uon of .to.tlc nydC"09"n ..,a to tile upaci. .ntal reau l ta.
c:<:q:IiO'' '
I ~,~
• .•. ) DI/oMlND HutS ON (100) S ILICON'
••••
taue., ".
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E.
dl • ..,tOJ • • 11lcon ~tl>1de • • n.d . Iu.' ... , vl, I". vlth .up~ lta povdu; .nd .p l a co.Hnl vitI> rlC\A. TIle .....!t ln. dt.a.ond <:< ,.'.1Utu \leU .,.'_ nucl ... uOD ;'ad • • ""tl> we.. u.... H ... td b, 0"7 of t l>a other .".bee .. Mt.."U, .. c .... patad an. c"""antnUon .1 ... Incuuad t M """lo.tlon •• te, a .. ln, .fta. "u, 1_ dapo.1tion ' lao,. ani, , . "".10 "".ured. ... .ad . . of d1...,nd fn .. van "'.poah.d varyln. tlla d ~ po'ltlon
STlIlI ES
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0 1 _ nucl. .t lon In • hot~fl1--.t • ...::u.:- " U .tudi~ by """"IU01I~ ' q»t i_ta on ditt....nt aubatnt.. (di..:nl, . i1l- . , \I(~ lto and 61_1lka CMtlOI\I end l:IIcougll aut..tcat. P<'et.raatMnt .. Ith ..l..,ud oevanic ..,Iecul... n, ..ult. ""'A'DCt • nucl..t lon -.ani_ In ""'id\ _ t i c Igc"", ltic) .ecua...,. ace ~teeI to . . t...,ateel, .... I Uply tvinned pncu.-occ.. Coolp>tac" IOOdallt"9 ot tile """INtion aro! \lCCNtlo peoceN pcovlcIN 1.... I\II>ta i nto the c.lati"""" ip bet._ stecklng ~coca, cry.tllIl ... _phology NOd ~rCJVth cat.a.
(11:55 ""I.) HREM of pI.llar 6dtdl and their hutrloCtloMt in CVD Diamond
X. S. Nin" J. YIIII. P. Pirouz.. and J. C. An",,· of M.ICriIlJ Science and En,u--inl- · Oepattment of 0!emlcIl Ilncinccrinc, elSe Wes~m Reso: ... e University, CIevdand. 00 441 06
~t
were DOwn on IDOlybdcnul1l and siJiwII subSQ1lItS by cbemical ~.por""pao.I~"" leVD) .... i" ..... sci"'oed by variou.1Odmiques olttansmi..ion tlectron mitrO$Wlly (TEM) illCludinJ hip moLuliooo TEM (HREM). A Ill,... demity of pla/W (lUI .. (c., . 1IlCIUn, flUlu and twinJ), twin iIIcse models. DiatIIOIld films
TH t [ fFtCT 01 SU~F"'C[ T RE"'T~"TS ON TIl" NCCL[/ITlON "'~"D GRWfII
or , ...CVD
M.1Cl.v.Tl ~
J.C. AnIjua, A. At9<>lthl' 1.. ~1. II. 5lIrIUca. and J ..... !!ann , J c. !lapKteM>t of o-tcal rnglMec1~. c..... IMI""'ait7, Cl .... ~, C»I 44IOfi
by
"onc." ,ntlo,,"
Jnltrrup~t''*
or
Compvilon oIlIIe I;"",illed ;mlCU"';1II 11K e>.perimeft.ta1 ones pV!: mu:flin. proyidin. c:onIIdcocc in the ~ cI die aomic madds.
PARKINS SYMPOSIUM ON FUNDAMENTAL ASPECTS OF STRESS CORROSION CRACKING U: Environmental Aspects SPOI'lS07'e4 by TMSIA5M~M 5D Co"osio,.
& ElloironmtHtal Effects Com"ull«
TuesdaYI A.M. October 22,. 1991 ( 10 .1 5 UI . ) (lnrIU
STRIJC TU!W. D€VElOFtlfIlT or O[NtOIID FILMS :· R.E. Chuslng, l. f\e,therly. l.l. Horton. LO . Specht. ,rid l. l. 1/,I"l00, Hel.4h
o"k Rldc;te !l4t1ona! llborotory. P.O. SOx 2008. Oak Ridge. TN 37831-6093 Tile structures of dlalll)nd fllIl$ gro,m by .cu.ne
iood
Room: 302 Cincinnati Convention Center
Session ChRinnAn: F. P. Ford. General Electric Corporate Research &: Development, Schenectady, NY 12309
3O--TMS Fall Meeting
..,..... .... _
CI ,lO •• • ·1 ELECTAOCtI[MICAL En'ECU ON EIMROHME/fT...,...... SItT£D CI'IACKINQ . ~ and P. L Andrewn, General E~ CoIpOfJll ~ & ~
set.neo::t8dy. NY 12309
......... '" _icI iii. _
, dioI 001 ........ , ... triIIlemeaI duria&
~"""ioo -.
(lO .SS •••• l
For cIIo::d. It hal _ ~ Ih8t ...wonrnenlaly-auiltlld ~ ... varIow ... oy~ systemI ...-oIveII ... ~ tdIon 01 IrMrvrment and ~teriII corditions. Incfea!ingly~ q,.IIIitItIYt rellliullon I"IaI ~ III ~ ~ capIlbIIiIIn bIf;;IU$fl of I\.orOdaIT*lIal ~ of !hi VarioUl rnctiont 00I:lIrr\ng In !hi cr"" I!R ~. In II"1II ......... ,h.,.tion ~ glwn 10 . .. . - IrI IIno
'''est.
eIectroctoImIcal Int.ractions ~ !hi cr"" tip mat."tlll WId IOYIronment. Spec:;tic attention is given 10 \!Ie thermod)'rlamlc: and kinetic Imitation. behind the (lennition of Il8 crack tip ' rstem, and how the ..",1Wlt cr"" tip potential, pH and IfIionIc IICtMty ...n ,Wed lIMo OiuoIutlon/O)(Idation and reduction wIIIch mly drtYI !hi CtadI tip kIrwW.ThIs cbeuI6ion of the fIIndamental mtterItIIenvirorment 1nlel'..:IionI Is expiIf"(IIId 10 00¥IIt !hi Iltua1ion wIItor, ~ may be roo. oonttd~ In IhI Ares.l corrosion or cotro&Ion laligut ~ procH$.
"1IC!Ion.
~TRE ~S COMOSlOll CRACKI NG OF All At!IMt-..LITlUWl-CQPPER AllOY I N CHLORID£ SOUITlOIIS , R. 8.lliSYltr_nl ... In" O. J. ~lI
Tile I t..,,, co rros iOft c r'd l n~ (seC ) susce ptibIlity of . n Al-l.ll tl-o.n Cu , 1I0y. In O.!>II ",e l So[utloM WH lnvestlusing. ton .tont elong.tlon rite technlQII
9't.".
~)"1r l 6e .
111 ,10 •• • . ) filAI'll), ANODIC OISSOLlmON l ASED sec Of 2010 (AL.... H:U) .,. ISOLATED PIT SOLunoN S, R. G. Buchheit" J . P. Moran', F. D. WaI, G.
Stoner; center lor EIedrochemieal ScIences IrId Engineering, UnivlfSiIy 01 Vwginia. Charlottesville, VA 22903
E.
sec
re_
Alloy 2090 :speeitrIons olhi!)il \I 100"4 loilute rOIO when remO'ffil inlo ambient lIIboralory air aIIlf 7 days IXposur. in _.Itd 0.6 1.4 NaCI whllt Idlr1tlallfy treated !ipIICim_ r.mOY&d Into Ii" Ilhibit 0% Out results indicate that tht ph_non Is eonsis\ent with an anodic dissolution bIstd sec m~ 0I)tr1\WlQ tIong ~ bounl:IIIty pIdhs initialing 11\ pits wI"OttI lerm t:UIng tilt pr....llpOSln period. ThII Imbrillling natur. 01 !he pit 5Ok.rIion ~ ~ bv _ _ II IIClorI inWding \he llid \he Lr ~ dillla.oll 10 hyltg/yze resUting in an ~ ....... sOOIiort. ... lormation 01 • Ll,fAl,(OH)J,-co.l1H,O passive 1m! on tht cradl walls wt1ItI atmosphelic COl IS prlSlf"ll, and the rapid dissolutiOn rIItt of !he T, (AI,CulJl phase ~ !h, prevailing lfIYironmentai conditions.
co.""'"
!1iI""".
·P....nt addre", Slr"6a NaIiDnaI
~orIes .
Atluqutrq ..... Nt.! 87185
'PreHN address: AIooa TIIChnIcaI Cerrtlr. Alcoa Center. PA \5069
very strong K
Model eeIo.olBlions
~~~I.~~~~~~:~:~~i~_~. ~~~~~~~~~~ AHQrdo IUI)pOI"Iood by !he Division of "-I lIIeriaI. Sc:iIncH. QoIfK:. 01
Basie Energy Sc:ienoH. U. S. AC08·76RLO 1830.
0epI. of Eneroy- undtr Contrlld DE·
C10,03 •. • • 1 OF M;TAL MATl'Ill COWOIlTU,
Tht sec be~ 01 aloy 2OIlO was irwestigalld usng both stalic dme·104eiIufe (TTF) end s!ow·ltIIin-fate (SSM 1ectriques, with ~_ ItnsiIe spe6mens. ~eoh wtrt per10rmed in 3.S w/o NaCi with end wihlut tdcitKJns 01 u,co.. ITF ,x~ were perIotmtd In both ~ immersion and c:Dn$UInI immlfSion _onmems. Based on !h. . .~irnlntII .-.;"encl, , mechanism ror inletgttnuitr sec wil be proposed incorporating 2 key S\ePS - anodic dissolution 01 tctiYe precipila1.ts a1 ttl. tnCk flp n passivation 01 cr"" ....... by , C8Wb0nate·based rim. In IOddmon, it will belnUS1rtted 1haI mechanistic in1erpretations of the dall from bolh leehniquas (SIalic TTF Ind dynllTlic SSAl) are corrobOrative, with DOth suggesting a consislenl mechanism tor seC.
1.4. Ltlolnlsiorl. Dept 01 Mat. Sd. • Eng.. of Technology. CambrIdQI, I.4A 02139
The corrOllon 01 metal matriJ< composil.. (MMe.) pr..- an irltern*'9 ptOIHm. no.r. .. m...,. conosIon mlCharilm. whidI may o~ In • eorrosiYI eIedroIyte 10< f"IesI For mtance, gIIvInie. pilling WId Cl'1'IioI corrosion can (limullanlousty operale in ~ber D'aphitllakimiru'll (GIN) I.4I.4Cs. Besides thIY. there 11"1 proon.sing p8r1llTl1t1ll'S which can also ~ • drllTllIie et!ec:t on \he c:orrosion rlol of these malerlals. The /.Ii.1Id Eleclro6ll Model !las been used 10 delermine the experimental eorr05ion rnistance of GlAi I.4MCs. Commercial malerial lias been SlUdilld, and oompared 10 lhe prtdicled corrosion resistance. By cnanging processing condiliOns excellent COI1'osiorI resistance has been obtained. O1hBr studies will be pntsenllld showing \he elled 01 certain alloy additions on corrosion resistance 01 GlAi I.4MCs.
mal.....
(1 0,15 • .•• 1
.
EFFECTS o~ ,"YIIIONU£HT ON TItE DUCnUTY 01' 11 ORDEIIEO IliON ALUNINlOU: U . L,od•• W.W. Mil..... Mol ~ o.s:-- of_rial ... ~~-..T..-paI~.~ MI 49931.
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PHASE DIAGRAM PREDICTION m, First Principles Calculations, International Symposium Sponsored by the ASM/MSD ThermodYl1llmics and Phase Equilibria CommiUte Tuesday, A.M. October 22.. 1991
Room: 204 Cincinnati Convention Center
Stssion ClurirmDJ: Dimitri Papaconstanlopolu5, Naval Research laboratory, Washington. DC 20375-5000; 8 . P. Burton, NlST, Gaithersburg, MD 20899
.. AQ •
...... IJ ....... . . . - .. 01..".. '"'" ioaaoinI 1\1 ~ 00· ' ' '1..... _1iIity ..
....:I _ _
....,.~,1oirt-11oto "'
obopljonIloo 011 ......,"....". _
f"",,",.~"
(11") hod low
of i...wic _ _ of "'" rrP boundarin.
""bri_
la _ 10 10. . .,.. do< dfocu of w..... whi<. it btl.,,,,,, 10 bt tooW"1 ....".. willi n .. AJ _ _ in ... whicto""".......,4irr._ ...... _ . Tk_~I;" _ .......... to ....... . 110&_ olmoiolve 111 ....... " " _ h _ .... doIIonl,.
*1"'" _
01 .. _ ; ' _ ' " _ _ • • , .. ro
i. d .. ~li.,. . _
' 1,]0 •• • . \
fiRST PRINCIPLES CALCULATION: THE ELEMEI'i"TAL TRANSITION METALS AND THEIR COMPOUNDS, R Ii W!o.t!!9n, G. W. Feruan"", M. Weinerl, u.d J. W. Da""nport, Brookh.y~n Nat;Qfla! Laboratory. Ce· pa.rtmtnt of PhyoiCl, Upton, NY 11973.
TMS Fall Meeting-31 I( done ..i.h l ullicicn. e..,-~, ~ Iud! d.ta ""iI. ....d for which """ (1')'1t&! ItruUure lit""';.. oit. of ..... 1)'1tUl>e1.r)'. Two Olbe, c..eo will be CIOIItSidered for wlUch then: iI 00 direct uperi .... nta.t data, IIIe linl bei<\! .he llruc:t",a.t stililit;';' of tile 46 ~km""IAI metall. The oewod i",,01_,"" diltor.;..,. mer&in ......a.ted .. i,h rna.ki<\! 46 adJ .ytt1I 0.- m.. l· lilayoen which c:onfonn '0 some py .... lubotrllie. Tb_ llllet ..,-., on.... ,he CO
in"""...,.
,':00 A.I.)
FROM ELECTRONIC STRUCTURE TO PRASE STAB iLITY OF INTEJlM&TALLIC COMPOUNDS: Aaiil!.m:. Solar Eatr&J ~dt
iAliJlllte. GoIdeIr.. CO 110401.
D de EourajD<. M. A.... C WoI""non, G. Ceder InC! PnblWar P. Sin&!>. Dept. of Ma\eri.I. S,knc:c and Mir>eral En&ineerin~. Univenhy of Clllifomia. Bernley. CA 94720 . • nd Material, Sdenee, DiYI,ion . La'. 'ru<;e Berkeley
"The approach to phue diagram oalculations h., ~ hanted drastic.lly wilhin ihc
Previously. mean field modt:ll (Refullt Solution, Bragg.
...
PRI NCIPLES PRE DICTION OF AllOY PNaSE STal lll TY : L·~.
P.O.
of n ol1oy buad 0" H •• • prine1pl" .. , boda 11 '0 ".l"ula'. '101 Srou .. d . .... , ot d .n.rn l or y.. ioUi o.der.d ton U , .ntton• •
'Of
f . oe ..101,,1> _ny-body 1... orae,lou un ... u t u"Ud ."'" " ud 1m It b Chat .10. . .nY-_J l "u ..c t lo... dod"".d Ir.,. • CooHy .owl 1I111i... cI .... , U p.OIIOD . . . hod d'foad ..... U IYoly 011 .b. 4 0 " .... d '0 tAl .... 1..0 ph... dl ~. r ... Work porfor_d undor Ih • •"'ptcu of .b. U.S. Dop.. r_.c of Enorsr by \..ou,.nco LlVOT ..... NoHonai LoboTO.or, uod •• contro.. n"mb . . W- 740S-ENC-U
• ' '''''-yn••d. _ 01.
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ell: IImlIiIoe4 empiriclll!)'.
(9,40 •.•. 1 IJn'O/CVII .+.l!I) nArII/cYII BASK!) "All l IlIfIO· c.u.cuu.TICIIS OF ICC· BASED lID
10899, USA; A. r .. turd. CIflS. Cunoblo. Fu"".: J . l. OObo .... . c""",l.. 5)'oe..... n...>ty Ir.",,". IIRL. U," hl~.t .... O. C. 1017),5000. USA .
o,n .......,.. 'n ~ ..h... ,v... " •• " •• 61', of ........ 1 acc · b• • 4d NI .... I ....TI. ".ro phal. n.I" . II t ......,. nu ... lon or .ho calt"lation .. H I"'" p . ...... . 4 . It "III Incl""," : I) T........,. ECI 6oriYod f" ... lI.I'. f or ICC-l>ud ~ I" ....,AI..TI . or.urod ............. : 2) A ~lA l ·"tTl p.. _ b l ... .,. pha .. dl . . . . . t".t .. colc......d In 'ho lCC·b...d o... h.d ..... . pprod ... tlon of ,100 C\I!f.
"m
p".....
On. p. .. itul.. approach t o uteubu d •• coh... nt phau dla, ...
Witti.ntS. Concenlnt;on Wavel) wen: used alnmt exc: Uliydy . These models tel)' on IWO ""ry I":""" appro~;mations: luperposition of "potnr" probabilities p.ir probl.bilHiu l<>d &II ;&.1 sol.m"" model the confi,uDlion.oJ ent"'P>:' Today. efrecli ve dun.,.. intenr.:l ion, tilll be. "k:ul.~ from fi m· princIPle, eleo:tronic SlnlCrun: rntlbodl. "'" ,upt
fim'pri""I p!e1 CompuUlion Or Phase: Di.,tUll. I M s'OCtcl and J.D. Becur. Ccntcrfor M"e riall SciC
n.. t.llu-odyn.-ic at.lbiUty of tM bee and tce 11. . .<1 or~rad pba ••• 1n IIi -Ii and IIi - A! II •• I144n .t.ud il4 "' th • IIlqllly . e...,.. . t. firat-priDe!,.I • • _thad. n.e oCcurrence of . . . n...,eitl~ tran.foc.ation in Ni-A! .2 ", r da .. ed i n ~e .... tel U~ .Uoy. " ill ba dhcu •• ad and ... lated to t.ha co n ~apt o f intu·..l4iat. • • t. .... ~t."r. a bat " • • n bee .....d f~~ b aa ... rt " il1 be . hown t"'~ doe. ly ... htad .. .. "'" ..14 et""e~ur. . c .n ."iat on f~e ..... d boe 1 . tei~ • • in t h. e..-poel.t.ion .. ~ "h.... e he t .. ",.f"' .... ti"'n oe=e . 2'ha ... tI. ... un".ud .ppa.r"'~. of til. Nit! e2 ",rdar'" . t""~~" in tIM ph... 41.9.... .. ill be diee"uad . WO" Jr. ,."f O...-d unda .. tba . u.p ic •• o t tho U.8. o.p.n._nt .. f tt:nar
111,00 ~ .•. ) " Ut nl~CIPLES CALCI!1.ATlON OF PHASE nUlLITY or NI-V ...,.0 , ~ -v "",LOYS: J. Mhdop.. . M. Slul'", 1. A. Sit ,,,. , f . [.A. Turd l . Lo ~TOD CO LlYHOO.O N . tI ~nll L.b~ ... ory. Ltvoroo . ~. CA
Lat>on.tOly. Belblc)" CA 94720.
ClO,oo •••• 1
•.•.
Worlt perlormld under the auspic.s oI1hI U.S. Dep8l1men1 01 Ene'llY by the Lawrencll livermore National Labora1o!y under contract no. W· "05-ENG·48. and b~ I". Oak RiOg. National Laboratory unde' col'ltrlC! no, OEACOS·840R214(lO with Martin Ma n.lla Energy System, Inc.
PREDICTION OF ORDERED SUPERSTRUCI1JRE PIIASE EQUILIBRIA.
~dthenburB.
,U.LOYS: H. S!uii'" . . . .... ",.<>hi, t.a .. ~ ...
Lab.. Oak Ridgl TN 37831061 , • . The briel ovelView 01 ou r reeeol wolk It Interrded to demonstrate the va~dity and p redictive pow,r 01 our rec;,ntly devtloped methodology 10 p,t1orm a boiflilio calcula tions 01 alloy pha$' stabilily prop,nies. Th, study o l lh, interpla y between 'Iectronlc propertiltl. crySIIl I~n' sl rliClure ,tlacts a nd configu ralional Older will be iIIus1111ed lor vanous elloys. incWng Cu·Zn. Fe ·C r (or V). li,Cr (or V). V·Cr. F.·Ii and AI.a.. It win be shown that new concepts and prediction 81e ' Ianing to ,mtrga in ordar 10 support 1he u penmantal effort in designing and processing llIW class. . oIlIdvanced materials.
19,20 •••• 1
l!iupp. NIH,
IU - Tl
80. 808. liY,rmor, CA 94550. and G.M. Stocks. oak Ridge Nan
I
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~z 0 . .... IDI, Li_~ ... , CA usso, ~ . ;J • • inaJr.i , tlnh . o f Cincinn.t.i. ein~inn.ti, ON (5221, ...... ";' IO! . stoc:Jr.a , OIlJr. I U . lIat. ' l LIb .• Oak IUdogoI. 'rW lUll .
e E A Tyrehj M . SIuile, . Lawrence liv,nnore Nal'l Lab .•
~
oaDD.11IC 111 TIll nSTrll lil -Al · n
A UlI3f 'IUNCI't.aS STUDY or ,1t.Utt: I'fU ILIT'f I II NI -AL
t.i ..~ ... N. t' l Lab .,
f iRSt
realll
'Of
•••• 1
1i0, t O •.•• )
Socae .ppr()&l;~et to plwe 1I.,bi.lily ud p~ dil9am alr;qJatiOlUt art illterpo!.'1.iw ill .atur~. ;. Ihl ..lIat )'011 le\ oat ieeettl "'fOII~y .. Io&t J'OII .... P~I II ; l !>ere ill', m~cll 01 , tlua: lor , raJ ' '''!",1Ie (e.t,. predic:iJ nC IWUlpel:ted plw5 . The 11.'91'11. of lhil approa.c1l. Iiea ill I e l1lIi.bilit)' willi .. hic~ ~ proptrliet are predirtrtl. A oetOD.d , oomplillltftU.ry approach t hat will be dilCuued bue Iw Ibe ~vene a n ributet: II II UDbiutd toward, kllOW'm proptr\iet to It tall predicl .11.1)' uuuJ*ted reaulu. ~. sioce no empn lcal Inpul II used, iu ov~rall qUIJIIIII.\lye precision can be 1o'IrtT. Tbe a pproach is ~ 00: ill; pmolmi n, lOla! eoerl)' talcolalion. on ~IO ordered phUH enersiea. (Ii in, IItt retultl onlO I multi-cite bin, model (iii) RlrCbi~ bit T.O c:rouud 'Ule ItIUcllUi!I of lhil ".tisUcal ...itiltolti.., (ofte:Jt adi"" IIIIUlpected pouad IIlle pl!asn). This approacb "iU be be briefly iUullllled 101 (i) Cu ialtrmetalliQ I (ti) PI il\ltrmetalli.;s, ud (iii) Ni~AI. W e g)fH(tly prtlt\irt lhe "Illili l y 01 1111111 WDr.~-' lad ideltil, also ptlNiWe ~ pllueo, Iud> .. C',PI) PdP~ (Lio AI,Ni. (GIIJP,,-liu). AlNl, (Ct.~ ke). RIIPI (N"IIP-like ud RIIPt, MoNi,-liuj.
lISt fe'" )'CUI.
u o,~o
111 , 10 . . .. . 1 ,lIAst StAJlLlJI UlIDD IJIIU:SWoL stilUS AIIlt tUll'!It.OTUlUI COMDIll0ll5 IYAWAT!D IY COIlPIIID. SllI\IU,tlOM II!TIIOO$,
,Ie"".
P , tart.. fo . "", .. l.h 5'-111<1011. l ... tltu t e ot "".o.let. SdUlCe . U-1J6. 1»1v.nity of COoulOc:tltu<. Storn, C'I 062"- 1I36 1'1>" • .. , ba """J' "".ec"",Ued e.... of r.pldlY roy.nlbii dl&pla.elv. pbu.o. l .... bilUt... ...,Iell """". I t blab attl" locotl"", ...."iq 1>&&.,- <10 ' 0... ,1"" or fractu •• • thereby .lter l,.. the .. ,.d.l·, plaltlc
1."",,,,
In
n_..
Jot no trac. tho po. . _.... . .. . I o f o~l .. ot I U." iodueed _ .....,.i tle
e_.or
t hul will be u•• d to IUuatn •• the pcint (vi. _101) • • ne! 10 .... tHn • • len ••• l ."r""cll for predictl ... dilp1.dvc pho. ... In,abllllY In &QY liven .. terl.l.
t . . po.ot"....
I U, . O •••• 1 All mlCIEWT A.l.£(altHII fUl IIll1UtU l 1IC TIl! CVII JlINCT\(WLl. V t . tuttI I .r. Iu"toio Lobor.....,. for Itot.rhh Sclone• • nd. En,I"".rl.... ~ I n Caltllonbo.. s. lID 10.. ' USA
and
that .I ..... h .. ,ho CVII r ......
..... o1,o
32-TMS Fall Meeting 1>e 1 "",1~ u I t. OVD . . . bttlc • • Thl • •ppro.e h. _ ...... . II. . 01\& .1I .. olvonoo,. o r ........ I ~ p"'rl\&lo. l ul ool ... l on. tho. ou Innl""l. to , 1\& cYII ; tbo •• "Itl I>e 41..,,,,, •• 01 .
... y....l lIIoJs. Tho"'aof _ _ ...... w1Il be _ _ _ _ .. _01
.... __ ....
_do~~ ""'_ ~.........e.""'-nlir)'d ~ ... _ . , . . " " . . . , . d . . .iflol ....... IIIt_lilYof_ ......
( 9, ~ 0
PHYSICAL METALLURGY OF INTERMETALUC COMPOUNDS In: Titanium Alwninides 1 Spmtsoru by tM TMS High Temperature Alloys and TitJu,ium Committees
Organizers: Dr. R. Daroiia, GE Aircraft Engines; Dr. D. Miracle, AF Wright Laboratory; and Or. Y-W. Kim, Metcut-Materials Research Group Tuetciay, A.M. Octob~r 22. 1991
CJIIlirmm: Y-W. Kim, Metcut-Materials Research
Wright-Patterson AFB, OH 45433; Dept. of Materials 22903-2442
Hall,
Cui .In\mI.ba!cd tiWlium Ilumink\ea h.~ IlOl rtteiv«t iht; SI11'II: de~ of "'l(nl1Oll as wmuPI pmma al~,. A JUdy o(CUln· 4SAI·2Nb-2Mn (al. 'JI,) wu undmalen,cul ;nl(l 518- dia. X 6" lon, bars. hoc isostalically pre$$Cd (128O"C/170 J'Ah/4 hI 10 close in..emaJ microporosity. IIId hcalllQlCd (IXlO"C110 hillS fan cooled) 10
produtt a mostly cquiucd IlITIITIa JIr\ICI\OI'oi.Thic m~ has produced amplible room lempent= dllCliJiriu (lOll) in ~vious 11IIdies. Tensile ICUI ~ condlllClcd II room and clensed ICmperlCuteS. 'reM was II"SCd 1O.w~ 1M 6cfonnabon ~ in the "",Jile: IeSlCd specimcm. The microslrua..-u w~1 be. pnslllcd and COllpIriIOtlI will be. made 10 -JhI pmmII alloys.
RooD'\! 202/212 Ondnnati Convention C~nl~r
Howe,
•. • • 1
ROOM AND El.EVATEl) 1'£MPERAl\lR£ DEl'ORMATlON mUCi'URE3 IN CASTTI .... 8AL-1NB·2MN· ; D. S Sebum" and B. Loo>cIorIt. ··McDonneII Dou.&1as ReKar<:h LabonIOriel. Bor. $16. Sl Louis.. MO 63 lt\6.0S16. tHo"""",. Corporaaon. OperhaJl Rexan;h Ccn!el'. Whilehall. Ml .946I.IS9S
T
11
""'$
ItiCIIdI wU IIIPponcd by Ho_ and McOoMell 00u,1a.J InlenLal ResnrdI and ~voelopmenl proa;mns.
/10,00 • .•. )
THEMECHANISMR)RTIm'lltANSPORMATIONOFl'"nAlI'ROMTI:y\1. B. K. Kad, ~ and H. L. Flue •. ~panmeoo. of Mll""'!' Sdence and en&iM.erina. The Ohio StIle Univenliy. CoIIIITIbu$. OHIO 43210
1\e formation of ')'-1\A.I r""" 0.:. Tiy\l in al+-yIWO-phaK allaya is imporUnl in .lew 0I 1lIe improved doctilitica obwvtod in ..-ch .JIO)'L The prubIcm of nude.li"" 11\ 0I"den:d phuc f""" 11\ ordetecI puenI ph.e ...., ia¥DI~ lwo distinct - .: _ ahcarina; moclwIi&m 10 IcnenIe 1M c:off«l atackin& and bulk dirr\lllon 10 f;aICnol6 tlIe«>rm:l ~_ and ordcrin&- II is """lear whr:!her .uc:btlon invol_ tbeoc varioulaep.or _ siJI&J. ~ ~,., SlUd, hal bcca .....rct\okcn 10 ddaminc the ................. oIlhlt lJanaformotion. Thu$, l Ito,sofn-4Ool5Al hove boIen solullon uwed II I2.SO"C lOr 7S hours and_ quenc:hecl. followed by low lMIpcntin &IIIICab 01 1(lO".9OO"C 10 caase the r......l;..., 0I1hin ribbo>r. of incipi..... nAi. n- uw.f_tioa producla h1~ bcca char.cierized by \IX of 'reM tcchniq ..... The faults oIthcse expcn..-u uv<:bcca 1IICd10~ .m«1wIlsm (/lflhe ronnotiOfl 01.,....m i.FIuthcnnore, thado~clopmcnl ofllletwo-pbasc lamellAr mlclOllJudure will bed~ with puticularlllention beinlP..idlOthe~ollwin.liuderoe<:ll in the')'-TiAI btha.
11 /10,21) •.•. 1 ,IIAU 1V.JISIOlMT. c-S I II 0 2 (PO,,) #JID 1 I Llo) tlY#JI1i1M ALUlII Jl IDEI COIfrAIJlIMC 10 v / o " 4IIo\Dlllf" · , . . . It I. a..oodhur7 . 1MI I. J . .... ck . IHp. n_M of ,,".b.nicol "'lln•• r l na. CIo_""
110>1 . . . . 1<7, CI ... _. SC
19, 00 •.•• )
Tt.:;-:;;g:
S11JDIES OF PLASTIC DEFORMATION IN A TWO-PHASE AU,DY 8Y tuOH-II.ESOLUTION EUl.Cll';QN MICRoscopy·; . and 1. M. Howe. Depar1men1 oIMaicrial. Scienr:o:. Thorn_ Ilall. UIIi"" .. ity of Virlinil, CIIarIouesviIlc, VA 22903-2442.
The plastic dor_ ...... of. awo-pltue (,.. ... ) 'riAl ..uoJ ..... in_li.oted b, hI"'·~.ohnlon dtcU'on rDeroscopy. Specill'll:lIS ~ deformed in comp-clSion al room tcmpenl~'" 10 ~ariou. suain levoelL Plutic: dcJonnarion in TTiAI ~ by the fonnaion of allne-planc - . .udcaltd DOl both aicIeJ of ple-CxiRia. twin inlCrflleCL The fornwio:- ur.in 01 this ~ i.J Ibcwe tile )'kid JCJ1.in of !he IftII
4)4ll.
__
TIot~-""_~""'JoPoI . ''''''''11.I_~ oI ...."-oI .............,,... .. ""' .. "----. . TiA~
noo
_
t h. 0 , . ... d .11 01 tunoro ... to "nllo ph. . . I .. ltho~t d lo otd .. ln. o r the 0, ph ........ 11. oh • blOod 011 0' 10. . . h.o~.h . .. n .. o f .... n.lo ... t lon. HtOro .ronl l "nlnl 10 .tn.le ph. . . I. ' In.I1,. 0 p • • ".o -bl .... ' •• c tion vlth 10 .... 'l ~ v111 b. P..... I •• • ",
+VOr. "',p<>rtd by DAnA Ihr .... p C- l coa tutt "0001.-89-J-31"
(l0'40 • ••• ) O!ISDV"n..
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sa-.
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Thoctfecl dtaoiiOJ ..... microouII .... ovoIu ...... AI oIloJs if oq>onod. Atc..fll< nIio:r-..:.wa ..... euoninod by opIioal. tcanni", tIId ........ itPooI 0100:_ mkroocop,. i. pot\ieIIW. """'1UreS. ......... "'1*- bowMIaria. aadd", l,.. perpondicoIor IWins. ac: .. _ ""...lCriwi. IA "'" "I 01...,.....10_ cooIi", ...... lilt 1 Iomolll< ~ obocnotd 10 Iino::IIy _ lilt .. by. -'rio.c floIi·1ike ~ tnd ~1111o .. """"' .. "2 .. produce lilt ..... ~ 0I1amdIoo u obocr
dor"" ron.
1O~' ..... paiN .... ""'~
<.Iee_ ,.~ ~
......... _
_dIonclCrire:l . IkIIiIIIJ_J'i<:aI ....... ~.Iho_d-a. . . ...h.• it.oon:_. _ ...... ..". ......
10 0 ploolk ..,.10 or ' .0...1.$" .. ....p
~..,~ io. ~
15"C .o IOO"C""" II>< yield stress _ _ . 1'1It""""""*'"d~""" ....liplinawllllo _ _ d l ..""""'.....
r..
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- ........''-ooaOllioo AtIlip"""""' ....,., .........;.. "MJt-w,.. _ .... T i t - . n.tl I..t ocame
..... $EM. COOpIod. _
by
. . . . s1oe_
dispaIi¥o tIId lEM _ _ _
c-.oaw_..- ..... perf_ .. fIInhor ........... _ _ _ ...,...,. .... ~
.....,.. . d _TiAl..... ..""" _ _ ... fl._:10 wi "nca 1evoeII .Ale· -... . ..., _, _lSO -100-1000_. -'I "..'" AI wido II"",...... __ _
296)4 .
Ph,," "..,%...,U""o of t .... t lt •• I_ . h_lo I4 ... ~ • ••• "" 02 nl)4l ) .104 1 I tl. l) . 110)'0 .. Uh 10 v • • 'l V. hnl ben Inwu U&II" I r ... 298 - In) K. T1roe H. ~tfo .... t l"" tt.per.tu.u du.lnl h•• HOI of each . U oy h"" M U '". " . . Iud ulln, In .lt u hllh te.pou t uu .- ray dlff . . .. I ... ( IIn.D ) ..... dlff • •• no h l u onn '"' calG"_' " ( DSe) . n . , .. ,,1< • • h .... th., the pr.uoc. .., V to both .1107' . nh.ftc .. oh • • Ubllt. , of I ...... . t 1_ ... p.... ur. . .nd ~2 ph . . . . t hl,h ,eaper.turu. In ." l
-a.;,. - - - . 01 "'" ~tnd
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~
IIId ~ ....... y. 1'- ....... _ _ il ...... ~ .... fIwt ..... ~
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(11 ,00 •.•• j
....
The Efftc. of Chromium on MicrollJ\lCNnI ~Y~lopmen, in Ollnml TIAI Alloy.: P M cOu'Y, D.M.Di.miduk . Wri,h, Labora.IOIy. WPAFB. OH; H.A.Lipsitt. Wriahl SIIIe Universily. OH; S.L.S~mi .. in. ikllClle Memorial IlIJlilUIe, Columbus. OH
(-1SO ppm O' n"') doy....... compared _ _ 01 tho """,WI po,ojly (-300-100) ppm
TIl< dreen or Cr additions on !he pha", i!lbml, and Ihe kinetic. of
"-
""',cd by opIiaIlRI ....."" deetroo .. ~ INI 0.. no.. _ .... 01 disl
cwoo; .. rioled io dellil by ...oaI::·.... m i"""", io ,... Ir_iss\on eloclrQn " iI:"""",,"" In adc!itlon, ..... pIoo ...... ""'"" io bondi .. .. Itmpo_ 1_ lS"C 10 l000"'C 10 _ . I _dllltft.Cllltnde~..., .... dUIocMioo._ ol""' biP~I'
be
TM5 Fall Meeting-33 ~lunI evoIuDon
(j\ ,20 •. •. J
TliERMAl. PROCESSING OF l ·TiAl EX1lI.US ION S: C. M lpmIwd. R. M. Nekkanti. WlJMlJ..l'I . WriP I-Pa1ttnOll AFB. Oft .~3J-6533111d v . ScctJ\arlmaIt, UES, ""' .• 4401 o.)'IOft"Xcnia Rd .• 0.)101'1. OItio -4S.32-1894 A T·nAl bIKd a1lo)' (Ti-49.SAl·2..SNb- I.2Mn) .... u ulnldcd in badll and po... flddl (l0»- 11SCl"C).. SEM ruultJ indiI:alf; W I o.l is distribuled he lCtOle~y 1qII(1in, in !he formation of ~unl bandJ ill Ihr: u· ClIa.ocIcd matcriaI.lUuaUn, !he roced b" f\lllbel" hocnoCUtiwion. SInoplc::s fn:m the e~ _ Ileal IrWcd II dirremll ICmpenlWCI ;. tlle ran,e 1250l4OO"C and cumiMd f... micromwcrural III'Id chemit;al ~IJ'. Heal _ It In Ihr: siA,1c pb.&se 1 field resulted in JltnirlClllI COlJ"KfIin l eI. thc T macri.l. SuinF IU\II;IUreS cont&inu., 6cformcd lamelLar pain!: undenrooenl paniaI rt:ayltrJLiutlOll 10 yield YCI")' f"", equiu.ecI crylllli of T and o.~. Treatments in \tie \WI) p/IaK field precluded coarsenin, 0( Ibc T .... aix arid thereby produotd • relatively uniform mic:roIlnlCftR COIIlisII", of cqlli ....ecI T vain. arid lamellar T -+0.2 lI"al nl. The mictoSIJuCl\lnl bandin, persisted afte, both linIments. In COllUI1I. Iherml l processin l . boYe Ihe 0. lfaM Y. elimiMte1 Ihe biUldod
1 + CI
mi<;rO$II'UtlUR:
it, however. leads 10 c:oanc IIId uncontrolled prior a vain size .
TheM: f'tSOI lII arc cIisI;Iaued in the ~lhl 0( IdditionIJ t.hcrmomedIIlIi pro<:eIsiG, Ilqllinld 10 ao:~ miero&WctInI rdmemenL Ub~ O
•.• . 1
AS PECTS or MECHANICAL Bt~VIOR or TWO CAKMA Ti ALUKINIDE BASE INTERMETALLI CS. M. Nat~X , M. Staub li . AlB Pow.~ Gen. ~.tlon Ltd • • CH - s401 I.aen. Sv itce rland. and D. L. Antan. Un ited Technol091 •• Re •• arch Cente r , Si l v. r Lan a (MS 22), Ea. t Hart fo~d . CT 06108 - 1096 G_a titaniUIII a lumin ide baae in t .nlletaUica po.a"aa • combination of a ttr.ctiv. ~chanic.l propertle • • low den a ity. and good oxidation ndatanc,. . !
PHYSICAL METALLURGY OF INTERMETALUC COMPOUNDS-Poster Session Sponsor~ by I ~ TMS High Temperature Alloys and Titanium Committees Sea '1'05t.- s-I0II5~ Section of the AMI Progrilln for
Tunday, Wednesday A.MJP.M. October 22. 23, 1991
Abstr!I~.
Room: 202121 2 Cincinnali Convention Center
DrgQ71iurs: R. Darolia, CE Ain:raft Engines,
D. Miracle, AF Wright Laboratory, and Y-W. Kim, Metcut-Materials Research Group
".lO •.•. )
Orwtted )
noout"TlOil 0 ," CttAIIlC !lATlIl ~I." S. N.,db. r •• AU S. ' . . D
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n".
C.... t c ... r lx coepod . . . produced by .be d l.lI<:ud oxld. U on of ...,I.en .. <.11 uhlbl ' u ull.n l pr O'p" 'I'" fGr . ppllc.,lon • • < d n .. " • • .., •••• ur... th. kel lutu .... of Ihe . . «h Ir "" . ~ proc ... lind I n vOT u tt ll <1 <0 fo r . . . trlc . . witb • • Ho,.I>1. pr ove " le. .nd to lnco.p<>u
n.'.....no
"10)
19, 10 •••• 1
MECHANISMS OF OSCILLATORY CROWtH DOlUNC Al203/ AI COMPOSlTl! FQRMAnON BY MELT OXlDAT1ON: ~ k.c. Vlach. C.C. UoYI, Univenity ot Ca.liIonUa. Santa a&rbar.. CA 93106, V. '. yaracn,. IruilaA iNlitute 0( Sdence. ~. S60 012. 1nd.ia. ...,;I R. Mdu"~ ~ Mellon l1nivwslty, PitubwJll. PA 15213A)2<>31AI COtn.posItei can be produced by dinded oxida lion 0( II\Olten Al-MS alloya. Proc:esJl nS I I !"~. "ThenJIOJfl viinetric analysl. of lhe oxId.tion kinetlct Indicated U\ OKiUIIion in the growth rate wiltt frequency ooneIponciizIa 10 that of the banda. II it . ...&rI1ed. that band formation resulb from • f1 ~ uroount of MsAlt0 6 preterit In the . w1.ce oxide layer, whoae dblolulion pro¥idet the oxyp. neasauy for growth. The Valiltiona in rite
.r.
I nd volwne fr.ctio n of AltO , rel.ted 10 the ~ in .lOiddotnetry U'Id dissolution kiMtiaI toetw.r. M,o and MsAI~.·
KINETI CS OF TH E OXIDATIVE G RO WTH O F ALUMINA_METAL COMPOS ITES. KtMtl b C, \II!dt aM CarIoJ C . Levi, ,.b teriab Dept.. Univenlty 01 CalUotnl., Sanll 8arbat.. CA 93106 HId Robert Mehr.bl..... Carnesle Me llon U nlYerJity, Pilbtwsh.. PA 15213 RHU)b on Ihe effecb of Ch preMure. lempen lure, alloy COtn.p
.no,... are abo discussed. (9 ,SO • •• • 1
R EACTION BOND ED SILICON CARBtDE COMPOSITES, K L PUldl I nd V.-M C h ilD'> o.PU lm.n l or Malu il l, $cleft« u d Eo, io« . i" J. MIIU~~ "SCI" tnllilUle of T
""rt
w. ",ill .. 00 Ihe p ll... .. i•• of fibt • .ad whilt .. cOD ll i. i • • l ilieon •• rblde eo",poo i.es yi. . ca0 di1<"Ul1<"d ..4 eOtllp..ed 10 t~_ p. .l1," ~di ed i. ue, c i.ro.ced .... 1• • i.1 (Ch i. . . .' II • •0 .pp", I. $ei. Cq . ,~
".,i.cd
,Jli""
II
lI',.
1-1.,.
(lO, I!) •••• )
( Itt'lited)
PRQCE$SI NG IoND ArnICA"n!lllS !)' tlB
ItrCltr CUA/!!C K.l.TUX COH-
POSITES, Vllup,nur A. It.ovl . r.rry~. Cia.. , nd Wllll u B. JOhnl on . !...onx1d. Co. "".. ,"'". N. W H~. OE 19 1 14~077.
PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS FOR HIGH TEMPERATURE APPUCATION ill: Reactive Infiltration and Related Techniques SptmsoruJ by TMS Struclurai Materials Dit1ision
"".ovoryle w of .he proculln. ud p.op.. U .. of Z. B1 -ph.d • • •• !~lo ..ed t rC .... . rb eoepoll, .. « ~ lIloPlld I. 1.o~da. Corpo.. U"" vi II " p r • ..,ot~d. TIle "n ot til. . . pla.d" • • tnfotCd U , "1c. In .11IY.I.,d ,,,_u,,, •• ,,"ylron. . noo f o r .hon
, re"Med.
tJo,so •.•. ) OrwIW)
Tunday, A.M. October:u, 1991
Room: :20l1213 Cind n nall Conven tion Center
Session Clulirmen: Ala.n 5. Nagelberg. Lanxide Corporation. P,O. 80)(6077, Ne wark. Delaware 1 971 4~71; M. Barsoum, Drexel University. Philadelphia, PA 19104
In·Sitll 'nc:Uli nl or Ct ramidCtramlt Composlle$ by Solid /Soli d RUCllons, M Banoum . Dre ...1 Uniwo,lly. Ptoibdelpbia. PA 19104
The in·silU formation of oeramkJeenmil: eomposila by eilha- n d"nac
metal-c:eramk rcactiotu 10 yield r"le IIId uniform "';cro
34---TMS Fall Meeting near Dd·v.ape foraina of \lie ,reen compacl and a COIlcomiwn incr~ in the II«n dtnsity prior !O reaction. The appliQlion of this a~prNC:h to form !heomically dense, ceronic-ceramic composita .... ith cu!eCtk. III nu.. of 2600 "C al te mpaahm, as low as 16OO"C in tho: Ti· B·C, Ta·B·( and Zt·B-C .ysttl"lLl will be detailed. The resultina mat£ri.al. are cxcecdin&ly hard and wear re.silWll but are easily electron djsdwle mllChinable as a result of their electrical oondo>c:tivity. The *hnoloeiul import of the.., novel mat<".rial. and poIenti:u app]iQtions will be discuw:d. 111, . 0
~ .,..l
PRESSURE ASSISl[[) RrACTIn SIIlHRI~G OF "iAlITtBZ' W. Z. Mhlol e k, ".0 . Sopchl k, R. M .~ ... n; Moterhh En9In~"ln9 ileJ>l,.t~nt. Rcnurlur Poly,~e~nk In s tHute , Troy, HY 121&0 Rcoctlve .Inl.. rlng t~chnlquCl phase for the fO"WItion of • betn .uccessfully Ippll cd to
.. teri.ls, such H borldes ,
lntenoct.llics and cOII!IOsltes. focuses on t he Ule of relctlve to flbrlcaU. the intt.- t allic
NE AR T HE DUCTILE-BRIITLE TRANSITION (OBIT): W ,W. Gqberieh, He Hu",,(\: ""d W. Zielinski, [h,pl. of Ch"",. E!IlI." M.t. Sci_. UnivenilY of Minneoot., Minneapolia, MN !>MM. An intc ""d 40 MPa· m'lt by <% . ,-/" TEM ""d ..lech·on eh"",..,lin,;, respectively. In additi""" the cI_ "])prouh of di. localiom to the <.Bek tip in tom~ of the . tumeo .. oppo&ed !O <>I.hers suggest. that lar,;~ ditJocation rr"" zooeo (DFZ) ,,",. Ihin film artif..,l. However , a f&ilu,., ailen.", based partly on th~ Riee·Thomaoo model i~ hoth <;ami.lenl with the .. b$enee of .la:r,;e and observed fr""lur.. tOll,;hneo. v"" .. liona with teol Ielnperatu,.,. Thi. i• approprio.te to . i!llllc crystals but t<1lUOU, lor polycryst"' •.
oi..ye ""d
on
19,1 O • . "' .)
(lIl'l'ITEll)
SOME C RITIC AL EXPERIME NTS ON THE EFFECTS OF MIC ROC RAC KlNG ON THE FRACTURE RESISTANC E OF BRITTLE SOLIDS: ~b, Diyioion d ~"', B..... o URi .....
.oily, Pnnoidenee, Rbodc
02912, USA .
A otudy hao been carried out with Ihe ohjecti"" of ""amini", ",hether controlled mkrocra.cki", r.bea.d or. tenolle aack CI.O lead to apparent en· h.r.occment. in the qu"';·ot al.ic f...,turc ....i&taaoe d brinle solido_ Thf' mo.\""o.1 cbooo..s:. . . . model 0r-km i . .... Al.O. -SiC ....hi. ker compo.i\e. The app.-o&eh inool_ dekrmillJt.tion 01 room tpy at the cr..d.·tip dam.ow: __ The 01>oen-aIioDo u-e uoed to c-taluaic ..vailable thcoric. d ~ ~. lmplicaIioDo ~ ...... Iip rmcrocrackiQ(!: 10 fatipe f.-.c..... .... addre.ed.
h.""
(l.O,lO a .... 1
(III'I'ITEll)
ENVIRONMENTAL EMBRrrTI.£ME/'(f IN lNTERMETAW C COMPOUNDS, " CJ.J.Ju. Metalsand Ceramics Division. Oak Rid,c National Laborarory. P. O. Box 2008. Oak Rid"" W 37831 · 6115
QUASI-BRITTLE FRACTURE I: Fracture Mechanisms
Sponsored by TMS Medumj~l Metallurgy CommiUu And ASMIM S D FlDw And Fracture CommiUee
Tuesday, A.M. October 22. 1991
Room: 300 Cincinnati Convention Center
Session Chairmen: K. S. Chan, Southwest Research Institute, 6220 Culebra Road. P. 0. Drawer 28510. San Antonio. TX 782284)510; J. E. Hack, Departrnent of Mechanical Engineering. Yale University. P. O. Box 2157, Yale Station, New Haven, cr 06520-2157 (11,)0 • . • . )
(III'I'ITED)
MI C ROME C IIA NIS MS OF BRITT L.E FRACT URE : Aolbooy W Eng. and Maler. SCi., Camc~ie Mellon University. Pitl$burfh, PA. 15213. and John F. Knoll. o.p1_ Mellllurgy ond Ma'erill$, Univ.o Birmingham. U_ K.
llulQlP
Mechanicil Ppe,,"inB in .... teri. l. on ,he SClle of 1M mic..,.lruc,ure have come 10 be cilled "microrno:chlni"",•. " The fundamenlal micromechanisms of brillie fraclure are ",viewed. witk patticular emphasis on cleavage and on inlcr&flInulu fracture. E.o'tnsion. KI Ie", brillie modes • ...:k .5 qua.ioCie.v l ge a", also di$CUssed. Th. elements of tile$< micromechanisms which,..., emph3
CRACK·TIP DISLOCATION, GRA IN BOUNDARY INTERACTIONS
X.,.-,.,nl "!ldies l\I~e demonsmlted that tnviroltmenlal embrittlement is. major cause of low tensile ductili1J and briule fnoclun: at ambiertllCmpmllu",. in many 0I1kred inlc-nnclalli(:$ with hi,h crystal .ymmctriu. For bee materials. iron a luminidc$ .... i' h FeAJ·Fc,A l compositi""s are found to be in' rinsical ly quite dllCliie al room lernpcralure. and their low duc,ility commonly ob$erved wh~n lested in ai r i. d ue!O an utrinsie e£ftel - environmmlai embrildemenl . llIe embnlllement involves tho: reat;tiool of aluminum at <;raek tips with ....ala npor in lir. resulling in the formation of .tomic hydro,"" that drive. into lbe metal and promo"'. deavlr. fraclUre . FOI fox Ol'Ikred ,nlermetallic.. Co)Ti (Co,Fe)}V, NilSi ·.nd Ni)A .lIoys,..., also susceprible to lell cnvin>ftment II I mbient ltlllpertlure$. In polycryslalline material$, environmcnlll embriulemenl involves pencll1ttion of hydro~en along grain roundaries. resulting in brinle intefJf3flular rraonm: and low duct,li'y_
"R ..careh sponsored by the Division of Maleriab ~iel\Ce •• U.S. Oi:jlJtnrnent of Encrn, under C(NltrACl DE·AC05·1I40R2 1400 wilh Martin Marictta EnerlY Systems. Inc. "Tbo _........,.;p hu booot.--.. ..,. ~ _01""' \I . S.O.....- ....... _ N~. Dll- M:XI !- IIo«lItll«(l. ~ y, Ibo U. S .a..-......a _. _ ... , ouyoJ'Y"_ lhopohllohod _ ~Iblo - . . - . "" 011 _ _ "' . .... lOr
.-.."']IItbI.. "" ....... U.s.aa-t ~~
(10,40 . ... . )
(Ul'o'1Ttn)
DUcrlLE ·BRITTl£ BEHAVIOR OF POROUS METALS AND STRESS· CORROS ION CRACKING: K Sjmdzkj MId Rooi: U, Dept. of M,!eri,ls Science and Engineerina .• llIe John. Hopkins Univ., Baltimore. MO 21218 Previous work has Iihown a s!ron, rorrelatioo bot .... ..,n selective dissolution in .lloys and Iran.granubr stteI$oCormsion cracking (seq. For al loy composi1 ions above the tk·ollo)'i"8lhr~.lwId selccrive diuolution ",sulls in the formation of a porou. mo:lallic laye-r oomposed altnOSt entirely of tho: more noble elementl l oonSliluenl. We . rflle th3t the mechanical properties of such porou. layers bchaviot- in many sySleDll_ The ligament and pore: size distribulion delennine of I~ layer is ",Ialed to the inilial composition of the alloy, tho: e1ecTrotyte rotnpo
sec
P I,lQ
~ .".J
IINVITEO)
A MECHAN ISM FOR TRAi"lSGRAN UlAR S'ffiESS-COR RO$IQN
CRACKING': W F.Flan3ian, P. Baslias. and B.D.L.ichler, Vande rbilt University, Nashville, TN 37Z3S.
A model is propmcd 10 explain lIansVanular Slre~ corrosion cracking (T·SCC);n f.c_c _male rials, whcrin seleclive disrolulion at the being disrontinuous due to crack arrest by dislocation blunling. and grovrth a .... ay from Ihis orienlation being
TMS Fall Meeting-35 For t~ former ~, re~udution of ~Ied cracts ifl\lOlves ~C!iye dis!.olution of slip pI~ocs ;1 t~ cuck rip. which ehanges rhe Siress Siale at Lomcr·CoureU loeb. causillJll~m 10 fail by cleavage. Howe\'Cr. the illSranl~neous nack'l"OWIh ""Iocil)' is ~nti~11y independent of g'owth dirc(uO/l. TIle ~)'§Iem ~rudied _ Cu·1Sa/v Au in o.6M fllaO wlulion al potenli~1s between 300 and 400 mY (u.e. ), which precludes hydrOlcn embtinlcnw:nL oo~tinuoul.
"ThIs work ;s being supponed by lhe NSF (U , 4 0 • •• . ,
Tho MIcrOrMCIIfOll_ '" ttydrog ...... nduc-do/nllfQrln...., F,.CI .... In • Mod .. Allo, SIMI'; M!ch;Io! J MorgaR. WesIirqIouH s....w.h ~ labcntory ........" SC
NIII08.nd CIIMeoJ. ~ Jr_. ~dP~. PIlla. P.. '8104.
The l>oICoOO'_ ...... d .....:del Sb
~ ~
. Tho a*:II _
lor .....
_ _ • 9Iuo:ied In. d ... ~
~
~_........,1n_""'~~011"*'11~·
...... The -... .,.,.. u.. h boG! ... ..,., IIjOOOtn QIIIl. *",_od .t • a*:II __ In IJ'In ~ ...w. IIw Itrgt.t IN TM a*:II _ _ """'*l by 1ncraMd c:oo~. d Sb _ I\ydr<>gtn; _ . 11'11 ~ d IN . . - __ - . d by lit ..-aIy lor ~ ..... . . . . . . IUIIc:IotWIy Itrgo lor mIf;:
""'*
poh._
~ ~ ~
..,.,
hIghttIlmpIriy~
-
"'C"....
1rI~
1M -.
_YIIueId~~~~~dis/IIIIaIcnI,"'"
!he .... d I'II\fff 9I,IItMd fIOIcn- ThI ..wt. ,.....-t.d no! adt !hi ....,. d !hi "Yd'flOl""1rnp,rty _ _ bU: oISO !hi ~ d ~ 18$11 In ItUcIyIng
,....
'1loIo _ _ _ .,. ... _ _ • _ _ II<... .... DWA . .
'a''''
RECENT DEVELOPMENTS IN THE ANNEALING OF SHEET STEELS I, Continuously Annealed Steels: TechnologylProduction SPOl15()Ted by TMS Ferrous Metallurgy o,mmittu
Tueaday, A.M. October 22. 1991
Room: 210 Cincinnati Convention Center
Session Clulirmen: R. Pradhan, Bethlehem Steel Research Labs., Bethlehem, PA U!016; S. R. Goodman, USS Tech Center, Monroeville, PA 15146 41,)0...
OPDI IIIC _
IUIS
C. Bru9nl. l , Soll.c, 17 AVlnue dll 57191 ,lor.nqe Cedl~, 'tlnCI.
ACA'rlI..I (IIOLLAC):
TIIIIUl"
TIl. eontlAuOUI annelll ln9 , prOCII.lnt line of ~inte M.thl (SoU le ) loin bu ilt tor both t n pilltl , Iheet pr oduetion. Thl' paper dilcu •••• the t.chnolQ9Y u.ed to produee coil. vith excellent unltoraity: clelln l nq lection, hllltln." p r ocell, roll COItlngl, coolinq t echniqul, t..pe .... turl control IYlt . . , t . .per .ill. lidl trl_r , I nlpection Mthodl. Properties of the Vitioul productl _ Ill 11110 biI1 pt.elnt l d , 00 4SOLREC), DO-DOO incilldinq IF, RSLA (SOLD01I) a nd hI9h Itrln9th deep-dr.wln9 (SOLPHOR). 41 0010 . . .. . )
uv.1\
••• . l IMPROVDlDfT I N PRIMARY COOLING 'rttBlllQUZ ( ROLL
nO' ~ ~
QlJEHCB , W"TER QUENCH) AHO 1'Il£ PROPERTIES or '1'11£ P1lO00CTS, It. Okuril, B. Ma kino , Y. 'l:an..ak •• J. Iv •• ,. , B. Ma""', .. obil1 Steel, Ltd., I, lI.n.1;1w;lcho . .... ko-
9;1wa. Bf090, 675-01 J'plln.
A eontinuOllI ilnnullnq !lne wblch h.1 t va typel ot qu.nchinq aethoda. Roll Quench , W. tl. Ou.nch, tor Ih'lt Itelll .tllrted oper.tlvn In 1982 .t Kakogawa Work. of Xobe Steel. Cold-rol11d al1d I hl.tl arl pro· due . d by the roll-qQenchinq IYltem. vhill yarlous type. of hi9h-Itrenqth Itell l IItl .v.illlble by water-qulnchinq technology. TIll. pllper dilcullea (1) rvll-quenching ~hs r letlri.t lci th.t .re .flected by th' lu r f,cl condition. of thl quenCh ro l l, lind ( 2) iI1QUipalnt modlficltionl , iaproy.a.nti ot Ope r lltion.l conditione of the wlltlr-qu.neh inq teehnoIQ9Y tor ptoducin9 dUil11-phl.e Ihle t. ~vin9 I tren9th level l 9rl.tlr t hlln 10 00 MYII. (la,$(! • • • • )
OUTLII!E 1 •
... . " ....H, 101. Corpoutl.Oft. "''''Y''' !!O.kl. ' o"'n-"~o
A II. . . .
I ...... ~1 . . . lll,
a...nc~
SYlta_
J.p;t~
ltao "'u l noull*
. t Nn .... kuY .... ""r~. for tho PIIrpol. of Up"n,U"9 . . nuhc."," of t h ;c•• , , .. ldo. '1.9" of Mgn t . . . II. nn",'h nlli. "oil Ou.nc~ IROI • 1110 ) ey.'''. h.~. ".~ " i " . t d l .d <'Ontlnu ..... . ly on t h l. II • • o lu r f.c. tlut,....t . .cOu t C\1tth9 . . . 9. trOll 110 to IIQ ... Il y. v. d..... v . . ... C""<>9. 1,1._ "'.0 .... n nt ..... ted. ,.". ~y . t . . . tOl.ad p,oduc. l o" I" h"._or
".t •• au""n
tu,""".
'no-
_.hl,.
In, .1Id n.. bOO" """.""" I t hAt" ... ,b. p.ooketloR of • " Id. of o;old - ,ollo
""'i.
Ol'
~, / oq._)
.. Uh 110.
,1, lS • .•
RECEII'T D!II£LOPIt£ln'S IN 'l:H£ K£TM.LIJRGICAL 'l:ECiINOLOGY COH'tIIftJOUS ANNEALING I'OJt COLD-ROLLEn MID SURPACECOA'l:ED SaEET STEELS: B. 'l:.k.~h I, Nippon St.el Corp., 5-10-1 P'u~hlnvbe, SI."all.i.lI« r l, Ken'9."'I-k,n , Jllpln
or
R.c.nt d'vl lo~ent. to be di.cus.ed wIll in~lude the f ollo"in9' 41) in clee of AI-killed et,.ls, nec,. ellry condition. to d'~relse collin." l.~r.tu •• , .nd I n, ,, h,.t cycl. for .cc,l ••• tin9 th. pr,c i pi tltion of I r on Cllrbide. du r in'll over aqinq, ( 2l fvr IF Ite,ll, II new t.chnoloq-y to uUne hot-lQrltin9 ellbrittleMnt, (3) propertie. ot hot- dip 9'lvloi, ed IF lIod to~bility ot lurtiel cOited til. . , Ind ( 4) production of .ott gr.dee o f tin pillte by continuous IInn.allng. 49 , 20 ••• . 1
TIlE ElJUIPIUNT i OPERATION OF Nn: rolUY4MA. No.2 CONTllflXlUS GALVANIZING LINE: A. Nlka-urll, K. Tllkll9i, N. TII9uOhi , N. f.no. NK~ Co.po r llclon, FU kuyaa. Workl. "okan-cho 1, Pukuy;lma 721, Jllp;ln IIIIK con. trllcted a nell hot-d I p 9.1vanldn9 Hne I n the rukuyll. . Notk. in April 1990. Th ll No.2 C;tlvlnizinq Llnl val Ln.tlliled for the purpo. , of producin9 I_POled pln ll. tor auto.obil,l. In o rdlr to .. tiefy thi l deaand, . . ny new t.chniqUII vlrl introducld In to thl dll i 9n of the No.2 CGL "'cill ty .1 follovl: III A virtielll-type .nnelll ln9 furn,cI ~ith ;I redllction type dirlct-fl red fur~ce p.ovid.1 qood aeehllnlc. l prvpert'l' • l urflee qu.llty. (2 ) DrOll dlfect. li re Improved by tll ndla pot e , 43 ) Induction h.lltin9 equip•• nt of 9.1vann•• 1ed fuentce II Vlry u •• lul In .u ppUllin\! powdlrin9, ( 4) An Fe-En all oy Ihctrop lni. n9 equlp-I nt I. ~Icful to producil doubl. - I.y.r cOited pr oduetl for .utOlllOtiYe exposed P
CONTINUOUS ANNCALING , PROCESSING LI NE 01' SAINTE
(11 01) • . 11 .)
Nf':W TtCHl«lLOGT I~ ~·c.o.L 11n SHEtT GAC!, T. h lbo... S. II. , • • Y. Id a , l. HtrQ.oto. T. N. k.,.vo, h" ... kl St u l Co r~nr.t1"n. T. Fvku l hl .. . ~i u ubl.shl Huv1 IndU l n y. Jopn I!ony cont i nuo us onn . . Una Unu(CA" ) fnt I hu . , . , . hov . bu n 'ncr . . . h "y I n "".ld_v' d . .. . . . p.oduc... . In h .... . k t S. u l, thO . . ,10 of CAI.- p. oc .... ct procluce. . 0 . n .nn. . lod p . odu~ .. Ita • • uc h. d ' 0 . pp. o ..... e!y 80% i~ 1990 . In "rd' , t " . . "" tac h" hlt h qu.1I 11 a,.... n .. lo fo r Nl nll 'U' _ U n u •• • h .....k\ Su d hu d.vel"". . .-.. ..... t.chn iquu to • ....· CAL. ouch .. (I) T ~ . . ... l eon « " I. (ll C","nu fr ee
,",,.\L.d
c._
h .. ~u . 0) ol<:cd
{4J Kllh ' n cln St r ip to""... , u
Coollft •• • nd
. . n to will b . 4 ... . lb.d.
36--TMS Fall Meeting
SOLID STATE AMORPIflZINC TRANSFORMATIONS I Sponsored by TMS PhysiOll Melallurgy Commillee Tuesday, A.M . October 22,. 1991
Room: 215 Cincinnati Convention Center
Session CMirmen: W. L. Johnson, Dept of Materials Science, Keck Laboratory, California Inst. of Tech., Pasedena,. CA; David E. Luzzi, Department of Materials Science and Engineering. University of Permsylvania, Philadelphia, PA 191Q4...62n (8:30 •••• ) Dr>o nln, Reaarks, D.E. Lunl, ~pt . of IDU. S~i. , EnCr., ~ivenhy of Pennlylvuh, PhUade lphia, PA 19 1(101_6272. (1,40 • .•. )
SOLID STATE A MORPHIZ INQ TRANSFORMATIONS , THERMODYNAMICS AND KlNE11CS, ';nrdp B Srbwon Cenlcr for MaIcrials ScXace. t.... A~ NationaIl...II:ItrMlwJ. La! ~ NM I7SU
ArnoIJIl\ous
melaU~
allo)'1 an: thcrrnodynamio;ally mcww,le wi lli I'UJ!"CI to
one or _ crylllJ linc p/'Iues. Formin' ... .morphaus alloy by alOlid IUIe 1JIftIf00lll1ion rcq~ swtin& from an encrplCld .... oe (fIw encrp IUJher than Ibat o(!he omorphoul awe) ancI ctlooti~, a ruetiooI pldI thaI ~1I1ho Iy.... from ~in' the c:rysWIine IIIIe 01 Iowa! "- CIICfJ)'. EurnpIeI 01 solid'ltale 8IlIOfJ'b1Wl' I1U$fOl1ll&lionl low:ll1de: (a) hydro,en·driven nnd_tion. in catain lntarneu1lic: COftlPOIInd:i; (b) intaditl'usioll driYaI lriUllfonnationl in Ihln film muhilayen of lfa/uition metaLI; .1Id (~) mechanically-drinn nnlformatio'" (mechanical alloyin, and baU millin, 01 ilMermelllLic powden).
W. /'tv;' .... varioul .~perimcntal IlIodi., 0( IlIese IJ'aDsformationl and disclW IdvllK'ft ill our un6enundi1l1 01 ibermodynamkl and
=
kinrics IJlIIIe pheN:lmellOt'i.
..•.
)
dimibucioa f~ This rrateriaI il bqod ... work: IIJIIPCI010CI by !he National Scia>ce ~ under Awu,S. No. DMll.'31002fand DMR-'lliom. n.e re&can:~ also be""fined from ~ use 01 the IntenK Pulsed Nelltron ~ al AtJoftIlC NoIionaII..abotIIory. ( 11, 00 ••• • )
nmRMODYNA.\ilCS AND MIDVJo.1SMS Of METASTABi.£ AllOY FORMATION BY HJGH·ENa.GY BAlL MUJJNG:" IUda.nd M. A _ Depe. oIN.:"'~ The Unl~ oI MidIipI. AnI! Arbor, MI48I09.
..u
Zr·ritb meWIIbIe ht .•Al. a\kly1 hoYflIloo:ll r.:..m..d by mLUJrw IJI elemenlalZr and AI)ICIWden. In &peemcnl widt OIhtr aIIthon' 1Wrlll, we obtained llIpe1SItW1Ited HCP solid soilltioni for d iS, ond ImOrJlhDoa' aII(1)'1 for ~ 17.!1. The Janic:e pnmtW:r 01 the Pid .oil/lion ~ ~:.a function 01 AI ~. su~ Il0l.... Ther.n!IWPJ durinJ die
"'uatiaa;
~~olthe.~~.~.!hen~lJI~
.. equilil:lriulll. hi.. been ~ by ditrltmlliaL ICanrIinS eaItrime
(11:20 ,.11.) STRlJerolAl. STUDY OF THJ SOUl) irATi TIWISYOP./IAflON III QUEIICH!I) AND ANNUUO c.·n At.l.OYS , W Slnkl.. _ 0 . &. "'.. I , Dept. of ~. 'f[llh S~lonu .~d &1'11 ', I1nI...,ult1 ot '."""11 __nh,
PIIIl.o.lphl •. 'A 191010 .
n..
' · C...TI .. .... n ..,lIod WlI", A ...... In din.....can • • I",
~""h.4
dhtrll>udon In t bo . . -q .... ""hed Nurlal la .hovn t .. bo _ b ... k dlraetlono.
.11"""'.
to 0
n.i.
\a prob.bly ••- . . of cey •• al '111. eoh ••• ""o l.",tb .. ! .he dlo< ..... ~ Itruetun 10 on tho o. _un.blo oq .. Ulbrt. . . t .... "ltl_te ly pr.,.,...l", • oubh e""illbrh.. of .. . T! _ Cr.T! . Tho ,-,"pllutl",," or thue ..... H . . . ith rea,. .. t.o _ ch."I ••• of crl ••• 1 hu lt. br.. k ....... lolld · nata _rpMution vII}
typo of lo • • l1ud ,h...
1. . t1~. t .... In Into._tolUe c_ttd. .
h
••
Uruet .... or _ .........1.
. - uy UotI .'otnon dlffr • • tlon .
"'tl",
411,,,,,.4
Thl. vork 1.0 o..,pcorud bl tho NU · ML throuJh ,unt . DtlR.81 IjU, .
(II:UI •.•• ) DI K un ion !'tri ad
A.tIdytical nec t.ron Mlcroac09Y (AVt) vaa _ployed to fo11_ U,a . t croat.ruetural avoilitlon of ....::tt..n1<:.lly .Iloyed pllra Tl and Al povdara. The powdera we r e Mi lled tor v.rloue .iIl lng tl ••• In • we viAl. The .pecIMen. t or AEM were prepared by 1.11 tra.iero to.y. An e"ten.Lve dUtu.lon ot 1.1 into the TI - l'Icp oc:eurred during the Urat U hours. An IIIIOrphu aUon n a ctIon toot place aftar 20 houn . UUng. Thh reaction ia probably triggared by an elaaUc In.tabillt.y of th. dhtorted TI-hc p 1.tUc• . Th. aao rpho". pha.e v.' n ot the Unlll on., a .tabla ho.o
IiflJio>otrioo"
5,,,,,. Ill. p'lI.to,IOI work on Ih. fO .... li"" of _o'Ph .... 11Io~. I»' Du .. u and co-work e .. a.i •• lipid ~u."ehin " I "umbe, of diff.unl prod""i., ",.llIlIc ,llu" bu..... 'Ied . HO'lll1' •• r. Ihe problem ..r p ..... uio. bu lk ODIO,ploOU' olloy. rem.i • • on ely,i •• ,001. We hve bee- OI,la,i", lbe pollibi lillu of uin, • uJIOpbuc fOl' doll P"'PO'C- T1Ie ptOCtU i.volvu ,... COIl6e,,"UOD of ulilliiae _orplIOIII pllticlu, • Sa.. . 1110, .UI ... _Pleled la .. b.lt fo"". ia .il... We bu. ued bol~ jo.l< ~u.i.. 'Dd ""'DClro. lpull.rio, ....11ood. 10 oyothe.i.. I .. aopho.o, IlIoYI of Ni.Ti. Ni_T'b. Uld AI _Ti. no... .1I0y. . ..... . h .... l.. bl . . .., diff,«lio •• diffe/co , ill lU nDin, u lO'imeUy. Ill d acul,oa l co ".,in,. p •• Hmino'y 'Cluhl On . i"le,i"" c'~II.lIiulion. Ind mechlll iell propenie.o of Ibul ol""phue ", ... ri. 11 will be dOse"lud . 11111.,1.1 rOI
,"'"'1IiaJ:
,.ed
STRUCTURE AND PROPERTIES OF METAL-CERAMIC INTERFACES m SptmSOTttlI1y TMS StrudurtU Materials Committee Room: 2.08 Cindnn.. ti Convention Center
Tue.day, A.M. October 22. 1991
SesSU)I'f CMinnen: K. N. Subramanian. Department of Metallurgy, Mechanics and Materials Science, Michigan State University, East Lansing. MI 48824-1226; J. Singh. C . E. Aircraft Engines, 1 Neumann Way, Milil Drop H-99, Cincinnati, OH 4S212~1 (,, 00 • .•. )
SEGREGAnON AT METAL-ttRAMIC INTERI'A(:a', J. Romero, L Wan, and R.J. AIlellalJII, hkfalll1rJicaI MaleriaLs Lab., Dept. of Mucriall and Nuclev Enpneerin" Univ. of Maryland. ColLe," pw. MD 20742·21 IS A noticeabl. lep:,alion of Si I! the TiB,INiAl interface. the 1OIIn:c of which is the Si in the AI w! Ls used 10 pro;cll the composite , Iowm the lende""y for • ~rtIIl interfoa: 10 be formetL The Al,o,rNiAlln!erlace. on the other IwId. lbows I tendency for fDllTlinJ a ~ 1n!erl1Ct and tills is faaliwcd by the ~ of My R~Prioft. The AlJSiC inmate an be affCC1ed lluoo&b IIIC procellin, muhods ured since IIotse mi&ht tauS!! the po:s.siblc: &nOrnI1orJ1 diffusion of AI Into SiC. The controllin, fOC1
ArOn,
,
111is wort: _
IYpponed ~1 the Ofroa: IJI Nlvo! Rete:ardl under
Contracl NOOOI4 ·15·k-0007. (9:lO •• • • ) INTERFACiAL SlRUcruREAND PROPERnESOF NitA! AU,(lYS AND OOMPOSITE$: l Ao Horton, C.T. U ... oJId e.G. MeiCamey. Meilll Ind ...a DMsio
c...
TMS Fall Meeting-37
recaI'
no.
paper prowicIcI ......I'«'beIIoiot IC"iew 01 raarch 011 duo:tjk Hi,AI ....1Crialo. H,,Al ~ .....1Icit _pooiIcs life ••• ractNe lor bi&h lempeno.ure •• noeI ...... ~ ..... OxI.rvlol.be imerfIciaI HnI
......
Rae-.eII ~ by.be DMIioft 01 Mataia/s Scie-. U.s. Dopac ...."... 01 EM.". """'" "",,"ICI D£.Ac:tl:5-MOlUl400 willi Monin Marie111 E-:,I)' s,."""" lilt. "'I1Io~"""" _ "" o.""" loyo _ot . .
o.S.o..-- ..... _
No..l)B..Ams.I4OIUI400. ~,.IhoU.S.a..-....n""' " _d"" •...,.tty.. . Liccpo 10 pQIioh Of .......... !Do ,..toliol:..d. tom. cl lbio ~ Of 011".- ..r... II> cI£> .... '" U. S. ao-. ,-.,-.."
(10: 00 •.•. )
CHARACI1!RIZATION OPINT1!RPACES IN
~vn~
COMPOSTTES
W.A.T.Cluk """- H.lJ'tNer. ~ of MalaWI Science and Enlir>eerina;, The Ohio S\AIc lIn'Y
TUESDAY PM COMPUTER SIMULATION APPUED TO PHASE TRANSFORMATIONS IV Sponsored by ASM·MSD Campum Simul4tion
Committee and TMS Chemistry arvI Physics of Mllln'iIlls Committee Tuesday, P.M. Odober 22, 1991
Room: 214 Cincinnati Convention Center
Stssion CMinftlln: A. F. Voter, Theoretical Division, Los Alamos National Lab., los Alamos, NM 87545
~
SlmplC50f 0 compo8ilemill"",ofthel wo phases"""'l and'TtB:! (in 0 ",lioof9:]) I\I.ve b<>en prepamd hy HIP·in. blended panicullte.t 980"C.1 140 MPo for 4 h"" ... The _pb _ he,ol·I .... led II 122'"C rOf 2~ hwr1. The rcsul1inl inlerfaca bet .... """ the intermeuUic .... triK and tlw: ......... k: pIItkJe5 haYe been (~ri_ II bas btcn dettrnUncd 111M diff...x.. 01 Fe inlo!he pank:1es oI'J'ill: bas oeeo.ured. andthat IlIiI isaceompUlied by achan&ein Ibe$lfUCture (ddaminod by CBED) of !he =-mk: pank:1aI from bexqonaI '" IIIOftOC:lilIic. Dilfrw:tion
tIIat • telative\ YhiJh density of disJocariona is pracnl in IIIe ylcini.y of.he illterfoceand ill addi.ion, _rs 01 mioJ'n dlalocat;"... ha""
conu.st experiJnents leYeal
been i""'led.t the in.mlCC5. This II ..... obse ......lion stimulaled lhe application of HREM iludies ....";.,h ""ve~vQled OW tlw: inlmacCS.1e in fact focelcd.and (here is 50ItIe eYid...ce of orien(.(ion .~Ia(io'l$hips (hat rnay exift bet ween lhe lwo phaseo. e.peri"""'IS""'w~y .....ently .;""",j.ol
12,00 p .... )
GXSS Releud CellI«, 0--2O.W, ~1t.1 , Gerllluy.
A lIO'I'eI duler-dynmia IIIOdel Us bet1I dndoped il Ofdel' 10 limulat.e tbe kiaetia' of deeom~liOII ill ~. willt. ei lher porit.iye or IlePlh~ 'IOmic pair uclt.&D&e e.erpa n . Tkt dUlI.ef~,.&&miCl wtalatiOJ1l 4ft b«oo ~ ,DClo tbat tbey ue (:&Jiatel!l with. .pedSc ud ad~UIle 11I.ermod,..,a.m.ir moddlillC of Ih puli""' ... .uo, ,,.Item uuder (:&Jidel'.liOli . Thil aUon UI 10 ICtIIlhtlse clauical lheoria of nrly II'fIt d<'ll;OmpOti lioa kinetic. ud to ialerprtlt kiuflie t!.o.l. whiclt. were oblained from upmmefllal Itudiea on Cu--CO (n > 0), Cu-TI (n. 0) ud Ni-Al (0 < 0).
bima:r
(2:30 p ... "
(1 lO •.•. (1 00,,)0 • .•. ))
i,
Dop"'",,'
il<>J1l-"'5! COIIPOSIr&S. N.S. a'"lo£( of ....... tolo 1n, lnn"n,. a."o .. lou
I~
POly.ochntc luCI'",o, Troy, ",.., Yo.k, luao·n,o.
Tlotu It conold. .obl. h • • ron In "tllI'ln' IIoSI~ .. I ... nlx for M,k u.,u....... cr... ' .... 1 c""""o"u. c ..." •••• •• (nlo.u . .alo \ ot l .., . botk c. . . .lco ood ... talo. Till .... ,.. dnlo .. HI>
of lo ... rouo 10 <_..... U .. of 1101\7 .,1Oh 412°3
0< n .dnforc_mto ,..""" . . " powder . . toll".,IUI .echd1"u or b, pt..... 0\>1"0,. Optlul ad ..onootoolOll _IeUI'''I''. '","phd olcrop'ohoo ............. , hon h u "0 •• to uUblhh .h~ . ""ct .... ""'" "_00111001 of ... Ulon 10,.0" p.od" ••• \0 ."u. c""""oH. . . . . . . . 11 II to . . "., tho defo., oUu.uu In tho
..It I>
eoul"ln ~
ph .... .
.... oreh ' ''P ..<,,·.~~ b, .........,on ......... .. ,.
u"d •• CoM . . .! No . IfOOOI4·a6-r· 0770.
hou r .h hl,Io,h.
( 11 : 00 • ••. )
T UNSRNT SunACI: ItIACTIVfTV Oil' ION BIlAM MOln n ED AI:O) PAlTICLES eN IJ·NIAI "'AUIX COlol l'(JSlT1S P S GRUMMON Z. CAl and R. SCItAl.EIt, Do~nt of MeuJJu'D'. MedwIic:. and MIlefi&I. Scieru.
Mk:hJsao Sial!: Ulliwnil)'. Easl1..or'IslnI MI.cu:n.
The tltrlOrdinlry o.Uda!icn ~_ of ~NiA.I make. till. compoulld. cardido..
u., .. bvt poor hlJh and low mom·tt:mpenullJ't lOulhllen problems ....10 probably be IOlvaI only rnaaerial fOl' ~
tlip·~.
temperIIIute ftrength
dlWp \he u., of. lullabk ~lnfOl'CUlt/ll phue. Alumilll it ... aancti .... cmdi· dIM: tor Ihi> role. hul iI muWfl 10 ocllif .... poor iJlleI&Qa] bondin. with nicltt:1 .oIumiftio;k 1I\UioI:s. RcWorc:cmetIQ _II as m:z, w!IicII bond IIIOft 1'Udily. may prueN!on&·.,nn hilfl·.,mpcnolUlll: 1IIbili~ problems. III this piper we presenl III'lullf oIl1:CO!f1l UPfl'i1lX1ItI ;" .... bleh Racti¥e . . Beam Aauled Dqmition (R·IBAD) lItdutiqaes han b<>en ~lDyed D provide "l'raMItnIIteKtivity' 10 0II\crt0'Ite ioen AlzOJ~ .. Thi.lUl'face acmation, ac~ WDIIp oomzoI 01 coatina: lDicltioome1fy and detect _ _ • i. ed llluSIed upon oompo.itt: pm. onsl .... IeIYu., • ..-ell bofIded. bill Ihtfmodynamically stabIt. paniek·rnatris in·
""~.
(lm l ted)
~~~~~~~;~~~~~~~~~~~t~~,I~~~
, ... k
.nvC't1/U 01 INTZlPACIl and l. "'Jo",
.... UncU'.
()nvlttdl
PHASE SEPARATION KINETICS IN BINARY ALLOYS WITH POSITIVE OR NEGATIVE ATO MIC PAI R EXCHANGE ENE RGIES: A CLUS't£R-DYNAMICS MODEL APPLIED TO CIt-OJ, Cu- Ti AND Ni_AI. R. XUlPIaUB ud lI.. Wu..aa, IlIItilll\ Ilf Werbto££onclolLll&,
('I1Iio - " v ..... """"""~) .... U. S.1'lopI. 01 M..v _
..... 1PE·I'OOl..SEJl.JJOS2.)
A
very .imple .... o-dimenslonal l.inC model hn been deYeloped fM o'Yle>!
orderinl in !he YB~Cu)O. oornpou/ld. The mocII:l fUI""'1 ~I·nei,hbor ~pullive ~ffccti.t pair ;nu:no.c:tion. and ... isooopic (.l\I'aetin/n:pulsive) nu.·
!ICVl'S1.nei,hboJ intt:ractionl. CVM (OUSTer Variarion method) calculalions based on thillllOOkl1u.ve prodouoc:aI.a phase: diapun In ~nwbbk &&lUmen! with up<:rimofttaUy 4ell:rmined phaK boulldaries. Moll" c.rlo .imul&oolll ha .... confumcd ~ yalidiTy 01 tho model and hive poyidcd ...IiorWiZ#iorl for Ihe inflllC:llCe 01 ""YICn order on tho: val.. ofT, (lI.pm:orIIIuctin, ....... ition !emperarun:) in off·mil:hiomellic compounds .
1),00 p .... )
(In_IUd)
COMP UTER SIMVLATION OF PRECIPITATION Of ORDERED INTERMETALLICS. A..G. KbJChat1lU1A ud Loar-Ql", Chell, RUI,us Ulliftflily, PitUI ••• y,NJ oe&55-OO'CK1.
SlnKIII.'" IrudoflaatiOlll duriDi plwe decompolitioa of • q\leDdled diaordered ~ wilh preeipil&liOfI 01 u ordatId illUrmnallic plla.H ito
allor
13: .) 0 p .... )
NON iSOTHERMAl. DIl'FUSIQN CONTROI..l..EO PHASE TRANSRlRMA,. nONS IN IRON METEORITES: I I r"*''lein Sandia National UIx.ntories. Albuq....,quc, NM 8'7 IU and L.ehiJh Uni""'lil)'. 8cthkhem. PA 1801~
A WidmanswIcn ~lIernolbcc CI J1'OWS uncI
3S-TMS Fall Meeting C(lnlbininc WlIISOllSoftheoomputer pmuilOlion Iftd Iho: ~ Ni padienIs in ,ho 'f piwc, cooIinC rates wc:n: caku\uod for individual Iron meltarileS. "IlIeJo: OM!in, nIH yary b . _ I ..., 1000(: per mill iooo )'U!'I " yiekl parmi body liraofSOIO IOOkra mdiamclcr, (l:SO p . • • )
TWEED AND "v-PHASE INSTABILITI ES IN NIAI: C. B«qu&rl., fJ<. ~ aDd. l .A. Rifkil, Caler for M"~ "" Sillllllilioa, In...il~te of Mlleriall Stie~ce, U~i .. elli IJ of Coutelicut, SI.OUI, CT 0II2M-3136.
TIte mar~lIIlllc p,ecurIO' IlIle ;ft tJ NiAI (82), specially near tbe compolilion NI.,.,.AI".h bu retenUJ been eumined very CXleDPye)y by mtlnl of T f;M, X-Ily lDd neutron dilfladioft. Se.ei"al lbeorelicai model. blye been pUI forward to I:I:pt.iD Ihe dl fllUt ICIUerins pbeDomenl obter.ed lboyt Ibe trII.fIeJISillc Ululorml,iOlt IflrlpeI"lIare in te,ml of tilbtf " " le Of d.Jflamic lllitJ(lIl •• elurai To ls i I~_ modd . mo/-.;v.I..- dyAlllliCf computer Jim.utioD' . t lt Jl(rformed on anlY' of 1,024 ll.OmI 1\ Iile Ni.HAln-. compoaitio. 0ft1" I ,~of lemperalurs .lIia pnl.ic!ed dear e-ridenoe 141 <:ODIpoailioftai d.ilOlcier (Of perbaPi ~ber kinds of 'lIIdomil located. poiDI defec, ",aiD «altn, YIUlIOeo, inl~tltial" etc.) Ir" ....... llai 1.0 i.dOlCe 1ILI..ltlUitic pteC"'"iutabilitiet.
tb...
Mlt ,r llh SClerlCe, lInh . 4f Vi!'9ioil, Cblrlotttsyllle, VA 22901 Ver)' low dens It)' Al·U · Mgo 11I41S wi t b lith i .. and 11190,,1 .. cOfItenh uceedl"9 the soli d solub lllt)' It.lh hnt been cut in an tffDrt to up l ore the opportunit)' t4 dt .. l~ 'OW-CDst, I1gM ' welgbt Illo),s. Allo), cc.pas1tlons In t he Al • Al 2Ullil phue fiel d ve ... IIlee led t D prow i lle varllng val_ fnetlans of AI2UI'I\I. Mleroscoplc uut lullon tb, lI ' cut Illo)'s ... welled A1 2UIIil plrt lcles approxlute')' 20 _ In dl_tlt ellbedded In 10 Al Biot . l ~ C4"Uln ln9 A13li p• • cipitltu Ind Lt •.,w:1 1Ig in s4lulloo. The Illoy. had densitl u II l ow IS Z. l tier with 0.25 yol.- ' r l(tI4" of the second phast. Htch l nlnl tutl ng has shOlln the U·Clst Illoy$ to hlye yl , l d U ... ngtbs nur 250 MPI but tensll. tl ong'tlon h H.llt d . Further preoCenlng steps In( ludtf19 utruslDn Ind high · t"""erlturt 191n9 hut beln t uluated as .thods lor IlIIIr4YI"9 tbe lenlne dllCtilitl Df lhen illo)'s. SponJorld bl!M UMurJlt)' of Ylrgln/ I .
0'
12 ,20 p .•• )
DEVELOPMENT IN Al·U..cu·Mg ALLO'tS OF HOFIORSION MICROSTRUCTlJRES CAPABLE OF SUPEIU'LA5nC BEMA VlOlIR,. G. Avnmovic-Cingilu. Flc. Ted!. Sd., 2100 Novi Sad, '(u~ilvi .. .ond N. J. M~, Med!. Ens., Conrordii Uni •. Moatr"W I-13G 1M8 The tors Ion tes ts wne employed both to develop refined m lcrostruct\lm; ~nd to test for .uptr plastidty . The 809tJ and ~l alloy. overlgN I t 400"C wen defOrmed: to E-2 MlLr 300"C, 1,.... to develop su~tructures of about lItm with miilOrWntations of several d~~. whkh wt're 5tabiilud by uniformly dIstributed p recipi tites. A Itr the temperatu re was slowly raised to 4SO-SOO"C, the s pecimen. were d"fo~ It Hr l to 10'3 I·r·in ordtr to determine thai the strain rit" sensitivity m rilnged between 0.37 and 0.43. Owing such . tll ining the crystillile miro.l"nllllon increased m u bdl)' COInpirea to lhose after the prr,tra IM. In IpecimeN hoi tonioneii in ttle flInge JOO-SOO"C, 0.1-4 " under CONtint conditions to .tralnl 01. 2.5, ~uilJU!d subgrains ohibited larger dimtrlSloru and more regul", lOw ~Iation walls ill kmptrlture L""Ote and s train ril\e fdl. Prelged specim~ exhibited l;uge DIttideI in/ltr~ with the ,,,NtNetU . e &II I somew hat lowe . rfow sl.es,..,. Ih iln initillly lOIution tTelted showing no putidet.
EFfECT OF THERMAL PROCESSINC ON m E MECHANICAL PRO PERlTES OF SUl'F.R.PLASTlCALLY FOItMED AL-~ AUOVS , S. .J...JlIk;:l a nd J. A. W.,""r~, ·A. S. " M. IDe., ~ NASA, MS I88A, Lanl1e1 R_ reb Center, Hampton, VA lJ66.S.!l25.
·Built· up structure ~ lISint IoIfJlC:fPWIie formin. (SP!') and aluminum· lithium (AI·u) alloys are beina: COIIsi(IerW. for 1M IabrieaIion of kLw-elldLinC. Thil inYaliptioa addresses the dTtd of simplifial posI.SPF pm<:eUi.., .... ~ pl (M9). J:.J:lelI$ivc Iwdneu aAd tensile property <1alI. an: prncnted &.11 lunction of SPF ~n, "ueroc;h medium and liin, trcUmtfLl. "Tbti ldlievemenl of illuitable biIancc bct""ftft modified processi.nc and po$l{iPF mechanical properties is di1ClWed. 1),00 p ••. )
HOT SlltEN"GTH AND MlCRQSTRUC"nJRAL EVOLUTlON OF 316 STAINLESS STEEl. DU1UNG BAR·MIlL SIMULAn ON. N.O.Ryan and M~ Medt. Ena., Concordia Unlv., Montr9l, Ca:wb HlG 1~8. a torsion.a1 simulation 01. bIT· mill rolling with d"din ins lfmperatu .... TI in the .. nge 12OO-9OO"C, constant pass f traln lj Coo 0.1}, nrying slrlLin rale lj C. 0.1-2.0 1.1) &lid holding time ti (. 20 0 . 40 s). the hoi .tr-ength Ind IOftenlng characterislics 01 worktd 316 lus tenitic stlinleH ,,"I WtN afUlfyud. When T is dedining. 1M pi5!I flow SIraleS riM su~iv"l,. , mc.t nou.bl,. in the- puses below 1100"C. Part 01. the rise 15 due to tlw lower T but p.ort I, dill to lhe d ecNlxd softening in the InltrVlb t5pedilUy below 96O'"C due to solid solution (.. ~ .. Mo). Th" adivatlOl1. energy In thil indus tria l sim ul ation It (Ikul,ted by sinh· Arrhe ni us analrsu i, lower I I m IeJlmol lhln 454 leI / mol determined under contin uo us ilOthermil conditionl. FUf"lhermore, 3M leI/ mol for sulic fecrysulliz.ation in dedining T tests is \own than 418 IeJlmol determined in ilOthermal \e$U. MetiUography reve.led that dynl mlc recrystallization il aperitlvt during the lut four puses. The nriglnil) 8:t1in i1iu is refined. from 60 I'm to 10 101m.
H.b rom
DEFORMATION MECHANISMS II
TMS Gmenll Abstract Sessi07f.
TuHday, P.M. Odobn 22. 1991
Room: 206 Cincinnati Convention Cenler
Session Chaimuln: H. 1. McQueen, Mech. Eng., Concordia University, Montreal, Quebec, Canada HlC 1MB
(l ,:tQ , ••• )
COMPARISON OF
~~~""~;.'STE":
_';;;.0""
ELS .,
i~~~~~~~~~~~~~~~~~~~~~~~w:. 01316
Th.
To
(2,00 p •• • )
PROCESSINC, CHAAACTU.llATlON MIll M{CIIAH1UL PROPERTIES ()f lOW OrNS1 Tl AI·Lt·1Ig All()YS: Lf Bycbb.1t and J . A. lint, Doopt. of
Xsll.)( WI5
01 the minu s
temperiltureof [ to Ihe · 2 pow"'r of Ihe bnf'''''
TMS Fall Meeting-J9 HoUomon parameter Z. The acthration energy for SRX.QsRX was detenninM and rompored with "tensive Il'$wl5lrom the li~iiture. The effects of accumula ted. strain ~ is reflected in the decrease of QSRX for both aUoys. The SRX grain size (DsRXJ is fined by the Barraclough expression where it is a function of original grain size 0", ~ and Z. SRX grain sizes were generally Luger th.n thOiSo-I .. Er)O\I, V.N. C1'H!mnhev" LN. Me.lI1ec!ion b1 .110.. ed de>elOl""ent and l.,plO1llentatlon of . total1y new procuctlon teChn0109Y tor hoI rolled OIet.l . Ith. t~lckness of Z.G to 3.5 _ .... tln9 the requlr~ents of quality for cold roll ed .nneal . d • • tal of di fferenl categories of Ora.1ng and strengh!. The .,.in requlrHol'nU ud t echnolgl,.1 . ethods for production of hiih qu ality auIOIllQ II ... Heel .h•• g with a high catego ry of dr .Ing,.o described 'n the paper .
Cr •• p-rupture te.ts Were pertor.ed o n austen i ti c .tainle •• s t ee l alloy 1?-14CUjo1o. 8'>11 .. ervice e>CpO" ed tuba "allple" were t e"ted in a vacu. . retort .y.t... T•• perature accelerat.d tests were conduct.d at the tubinq operatinq s tra,.". Ruptura till"" for •• rvlce te. peratur. . 8re e"timated u.109 various ti. .-t.mperature p .. r .... t.. r . a nd a R"botnov-Kachonov d ....q • • •chanics lIOde l. The ~esults ot trsctoqraphic a'>ll .icroatructur.. l studl.s are corr.l .. tad with cr.ep-ruptur. p rop.rtie'" An a " •• I".ent ot the validity of the Lite Fraction Rul . is mad.. A fini t e . l . . .nt lIOd.l ot tuba cr•• p lIt. IS com~red ,,1th the oth. r predlctiv. . .thode.
II."
rrs
DAMAGED TURBINE BLYlE EV AWATION A,"O REUSABn.nY: M A !mUD K. Sadanmda and J. FtonS. Mlllenab Sdence &. TechnoIog'y Oi~ilion.N.yol Rescareh LaboraIDI)'. WulLidston. DC 2037S·SOOO
A $ignif",_ facto. in the CO$! of
DEVELOPMENTS IN ADVANCED AEROSPACE MATERIALS IV, IntermetalIic-and Ceramic-based Materials Sponsored Uy lhe TMS Non-Ferrous Melals Committee Tuesday, P.M. October 22, 1991
Room: 211 Cincinnati Convention Center
St:Ssion CNzinnen : Mike Zendalis, Allied-Signal Inc., P.O. Box 1021, Morristown, NJ 97062-1021 (2,00 p .... ) "l"t~SILe
.pac.
(2,30 p.m . ) IOl1I'lCIITJ.(M 01" 1WIDITIQIl\L ~ IUI,Ch(W PIIlC&'iS IIIC.ll£o\S£S PKllIClTID"I. &11101: Ttw:!rpson. Vacu ... Industries. Nashua, New ~Ire 03063. Th .. $JlyU-ia of s llioon nitrim by cat"b:>tl">enTlic rOOuttlon of
silicon dioxld8 in .. nitro;ren .. l:Jt<:>sphe", i ,. .... 11 doc\Inented. Tr.idltiOflilI production llIlIthodll ilWQlve CO!Itir(l the ,ilica particles with carbOn, then he ..Urg the CO!Ited particl",. In a nit<"C\ll!n .. tm08phe..... Thi. process Is nomoolly carried oot In .. " uUc bfId. Thid..ethcd .-equires .. p .... liminary s tep of wet mllH"II 0<" 801"""9"1 p.-o:.>oM foil"""'" by .. dry!"" proces,. to pn:duce the feed Tile fOllOWi"ll work describes .. oo::!iflcation to the cartJOthennic reduction process in whidl the s ilica an::! carbOn ...... contillJOUsl~ .ixed while heatlll1 In a nitt
.t.ock.
(3,00 p .... )
OJ CRITICIIL FIBIl!. UNGnI m FII£R lI)':INfOUD lXKUlI'lUl . L. _ t t , I!. P. Ardera:n. S. Cotporatt ~ienoe LoJx>ratory, E:>cxa\ ~ am n>:ju"",rinq O::Ilwny. /IrYlar"idale. NJ 08801 "Itle effect of fil>er ftOdulU$ and cohesive enerw on critical fiber lengt.h an1 raodiUB in ceramic-fiber ....info:xced alttle carp:iBites had bo:oen in~i9ated ~loyin of the e la$t1c rn::duli ntio Ef/bI>, "ith 8 diw~ oocuring- at b>th low ard hi m:xtulU!l ratio values. 1\8 tte no:\ulU!l ratio is increased. thI>re i s a tr&nll itirn in ["il ...... noe<:hani_ fran U!nSile &mi.no.t:ed fa ilure in the rMtrix to $hear &mi.no.ta::I failure .. t the fiber-m>trix interf!ltrix systans having diff""ent ncdulus and t:CIU<,!hnes- ratioll. Il'F!;Cr (F l-u:m.us AND COOlSIVE IN€Il;Y
lJ.nq and C.S. G.-est.
16,00 p • • • J
(4 ,20 p . ... )
tho caapo. ;'t. . .... ~. UpooCi" lly undU"" to ~i.,.h t _ n turo proe xpo o.ure j.n . i r but not in v.eu.... . "ltl>ou.q~ s urpr; a\ n91v ey<>n~ lMl u! ...... v. n,,,k . 1 1>.0 .. IOUI'"'.a lioy. £I\virOruMntal & ... q. 10 Cl ... Uy a n iI,Ipo r U nt bctor. I t Is . 1>owtI tha t eoU ... t U of t . n . H • • t""9th frin~ d ue to interI. ~. cnclor pull ".,. in t . n • .ih U a . . ... y be of II.ttl. ccn.oquttnce . . . .... l1"ti., .. W<.i Ol l of pOt e nti.l . . re_ a pplication. of OI<".: a is prosentAd.
pli:(lPt'.ncs or CEI...."':: ...."I""IX COOU'OJ;I"I"ES,
V.A.
THE HOT cOMPRESSION 8EHAVIOR or UlTRArINE GRAINEO MoS iZ/ HfBZ C()If>()SITES VIA RAPID SOllDlnCATlOM TECHHOlOG¥: A. 8~su. A. Gnosh. Oept. ".te rl.h Sci"n<=! ~ (ngr • • UnlY. of Hk~i~ H. H. Oow Bldg .• Ann Arbor. HI 48109-2136 . R.Ray ..... r . o .... terl . 1• • Inc .• P.O. 8o~ 3. NQ . 8ill~ric •• IIA 01862
R.pid solidification tednology was employed to fabricate In-situ composites based en MoSi2 containing HfBl. (lIo.gHbO.I)SiZ bls e intermetalllc .... terl'l containing 8 dight ptr<:ent Htez wa S p...,_ pare . Compression testing"as carried Out at 1200 .nd 1300' C IS I function of strain rHe. The materhl showed Htr.othe Hrength propertlu upto 1200" .nd H 1300' C t M 't .... n9t" r.pid_ ly decreases ..ith decrus [ ng strain rate. The r esults of tM n>ed'an [ eal property t ests and "'(crostruttu,.! etworlete riution will be discussed . (4:00 p.m.l YOOC1III!SS
or
IIEllSE IIoSt
.un
IIoSt
I Uft~
.u_.
IXlV'OSIRS
no-
~ Srufl.:l, I.1c,,"," e_ ea....... 1.0. AI_. II. U ......I ..... ""~•• OI""J'. Lo • 1M .7SU. ~l. II . _tb. Dnnl Ot>h. . .1ty. n.u ... tlpb ... . " A 19104 , ..... ......, II.
JJOCm lit UIII PUSSIIU
... U . ...
"• ..r
Loa
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LQ.or.tol")',
Loa
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1M 8154 5. . 1M
II. S......Jr. . Lo. AI_ . . .tleDel ..... ""...01")' ....... AI_
81)4~ .
Loll P.e. .. .. Pl _ _ S'U,I,,& (LPPS) _ ucoe.tly NClO ,..ed ." f&brl""'~ ~Ip dud., . , • • , forwed d._i .. of _ 1 .,Dd 7 1IoS1 2-_ed ~ H.. . r ...,tun t .... &b._ •• for ~'b aa-a p. .,ed ..... (lIP) .. ""MUd.ted 1IoS!2 .*ple 1IoS1 1 • h.cfu . . ........ oe. . .et • ..t.... 1oua _ ro d""" ualq 1>otb an liioInUt1eo h a<:tur. t ...."'o. .. '.e"d qo~ -.1 • Cb""T......-....«10 f.., r .... h. 1M"" ..... A ..,l.etT"1'7 1.. frac'"re ....."'...... WI ••10_ ... ubt ••• ro. ult of tbe (LPPS) 'TOC. . ..
1>0."
" "'al...
_.led
Noodford,
0 .". v .. " S t . . l o . J. BU .... ".n ..daer POlyte<:~"ie l". tl ...... U s. tnq. Dept ., Troy. NY \2aO 4n~ J .E . Pal kO. G.>:. co .• H.t b . ~ P.. "" ..... £1> 9 . , $che"..:Udy . NY Hlt5 ThiS pOpe. aporu the d.vel_nt of • ..ee~"nical te .. ln.,. _.~ _ O<1 c e libr.tI""l and pr"".dur. lincludiJln difforo"t O. ... ».i.e . . trb COIopos i te s ho.v. been t." oil. t u t u . .. otren9 d f..,t of t o _ .otur. o nd ...... In rAU .... "". .. vod. __ ... 1 ef
""""01
13 : 30 p.m.)
(4030 p .... ) POWDt:R l'RQ(;ESSING
or
NICKEL ALUtlINIDt: KATRIX COMPOlilTt:$
H. Z. Ml f io lek: Material . Enqine.r inq Dlpart.ent; RPI. Troy. NY 12180; R. M. C• .-.a n ; Dlpart... nt of Enq lneering Science ftnd " "chanics. Penn St"t., unive r si ty Park. PA 16802 ..... onq .. 11 int"r.etalllc" the .. luminid .." "r. the material,. wh ich hsve r.c.iv.d the .ost attention b.caus e ot th.ir 1m' d.n al lo~. Studi"" ... " r., perfor.ed on t.ho
4O-TMS Fall Meeting
\I""..'
d..nattie.tion of a NiAl /T iB,
co~po. lt.
by hot laoat.tlc
pr."'ng (HI Pl different t .-per.t", ... , pre •• "re and U.. cond it On.. This ...... rcb foe ... _... on til. fabrication _ thod " ith p reeUoy.do poV
.",ell a. particle .. I,. and particle .1.iI rat
ro"•••and hot 0,
b_t.tic p r ••• inq varia b l . . euc:h ill t .....r.ture, p ... . .ur. and ti .......e • • l..,ted a. til. . . I n tact or. a ffecting the d,."dticaUon proc.... Mathea.atlcal ilq\lat4.onil, Inco rporatll>lj' th ••• varI.hl ... , _re proposed
r or
t inal
danll ty
and
co.pound., Addit.ional
ilxhU "9 .od.h .
hardn.. . or
.~rl_ nt .
t he
fabricated
....... run to contir.
KIRKENDALL EFFECT SYMPOSIUM ON INTERDIFFUSION AND PHENOMENA THAT DEPEND ON NET VACANCY FLOWS n: Binary Interdifiusion and the Kirkendall Shift Sponsored l1y tit! IaSM-MSD Atomic Transport Committu Room: 2(17 Cincinnati Convention Center
Session ChRimum: M. A. Dayananda, School of Materials Enginet!ring, Purdue University, West Lafayette, IN 47907 AliO LAnAAL w.ss FUM AfflllAl[O WIlli flit lIRW1 ·
Wolker
~th ,
PIIysl" Dlpt., I.mtnrsUy of
01~T
(3120 p ••• ) UfII(£I(I,\U
EfFECT IN DIlUTE AI -2n AllOYS
, _.... H........ and ItolotoA 1III~_t;:hu1~ Di~n.nt ,,( ,,"ullurgy. iA'tiy .... 1t,. of IIUnIt. r . Go ..... y
2.. Ic.oa. diflut.d into AI I_I .. f rooo UIe YlPOr phi .. generltld b, clllllt • .I.1-1n a Uoy eIIipt .t ...... lIng t _ u t ........ n.. occurri"", U rk_ l l ofl«t proyitltl the d.u .... i ... tioro of UIe ratio of intr insi f; diffusion f;OIftid... u 0 IDA}' Alth:l<.ogl'l ttt'I .I.1 ..lnl". oxide by~r COllIe! not bI I.Old.1I R oi.i!' txpnioent. In chrruHQwever, i . possible OI'Ily n lOMe pref'rred are.. of thl' oxi~ lay . r. T.... .. nen o f t~ il I tnny .. tltthavior is I'IOt quito clnr in t .... _ nt. The ratio 01 10,1 was deur.ined I t tho. , tflU • ..h,re t .... oxide layer .... PIRI t tttd by In ..... 11 .. by .1.1. USing the •• clney flow factor '1'!n/lZnl ' obuined in thi . ..ay, juop f~y ratios .ccording t ne n~Q-ftIQ .... nc,. ",dill ..... ellcuhlle! wit .. ttddition.1 i~forut1011 Of O' ln'O'.1 Ind of th' cor ... lttioro factor tIn frooo hun t .....
1
(),4Q p ••• )
nlE UMITS OF TIlE MEAN·FJE1l) llIEORYOF INTBtDIFFUSiON:'
MidIId"'-, ~ ofNIJCic.EnJinctetia&. The Uniwnilyo( M.ichipn, AM Arbor. MI 481~11()4.
ConvcntioNJ thecries ofllDmic vanspon itt IoOIids an: based 00 • linear TeSpOtt5e tpprt:lJtimalion. usin, !he dIemicoI poCC.ntial, i.e., I mean fidd. "'" I driviJt, fDn;Jt: . Eutnplcs of such treIttDeIII In: Darlcm', equation for chemical inltldiffusion codflCM:ftU II1II the Caltn-HiUianI theQry ol.pnOO.al tlu>:;tmjmition. In this pipet'...... invesliple tltc I pplicability of the melll·fleld theuv 10 these probIemL Ioterdiffusion c:odflCienu hive been CIiculJted for I binay Iiloy. kinc!it: ' ''n8 model. usillJ 1CIiY00000Slaie TaI(I theory. The _III Mow thltt Ihc cltanicaJ .nhancemenl of cite intenlilfll$iOn c.odrlCienl saruraaes" MnIlI value$, in <;OnII'a$I to o.kett's cqu.alilla. his conduded tIw the tIIW\.ftdd I'-Y bn:aks clown .... heII dIe.1OOitc: in~tion ~ Itt ~II:I' that\ q T. in '6'bidr. case the line&r "'JPOf* I'-Y is nDII valid CYCtI for small tt;lDl:CtltnIioot pdienII. Our mullS ..;u be oantpved 10 aperirqmtal daIa. ill . t. for m.a!tilayaai .....eri.oIs. In ltddilion, die dfea '" orderin& on will be dilCUUCd.
imadiC'
• S~ppcrud t.,. the Naion&l Scicnoc FounIbtioot. put No. DMR.8820285. (~Ioo , ••• )
PHASI P'OIIJIATlOll'. um:lDl''''SIOll A!ID tHI ~llItIIItIALL EFFECT l~ tHE "'·$n SYSTEM . 11 11\1.<>1< "" and " l,blll I Ngth, Doopan. .n. of IIo n.I . 1o Sd ...... nd 1",lnoulnl. I.ohllh Untv.nH,.. Be thl.~ o ... fA lIOiS
!'hu. fo ... t lon ond 'r..... h of ""Sn ~nd '" Sn, In "'·Sn. (:y·eu.,S .... . _ ' u,Sn·s.. cllttUlI ..n .. upl .. t,';, •• bun .. ~nled at 200"C. tho kil•• deo af oIn.l. ph..o " .... th Ind .1. . lo_outt , ...... ,.""th r .. r both Inon. .cllote ,h.... hu boen • ..-I ... d _ "til"," nported . • vorl . . y ..t Inn. _de•• ,._HI .. lulvo ........... d to _oaun .h. ~1r""ndoll . H.ce I n tho .. dlHuolon '''''1'1.. . ',.."In will bo Int • .,.ntld In U&ht ot recont llt . . ..",," ..""I ...... Ich Indl e ... thot "" l ourpha.tt. Into.r... con . . t •• e l thor • yoc. "", aoure. or ,,"oo""Y oink . Cro l o boundory IIIH... I .... off.eu withi n .1uI r .... U .... · fo ...1I phalli b . 100 dhcWled.
n.w..
(J;)O p ••• )
OU'OlXo\tlOIi wa.IIIC tIlTElDIFruSIDII: C •
SU WI\1AD. U K Iluunh
Ohl. I .". ' .0 . ..... 211. YG
10~tI.
no. Kirk."""ll . r r.ct 10 " run .. utod ".In, .h. !)arun 0",.1,..10 . In which It 10 . ....... " th •• the pou"U.l ".c.... ry to ".h. pl utlc d.ro .... tion dur lnr; In t • • dlff,,01on II .... II'lbl.. \/h,n thh 10 ...... d(rr~don or tho "rU t .. " c _ n t I. tho .no·lu,ltl", ot., . H.... u ••. U .«".01 _cho .. l eo! eo""~I~~tlvo nlot l o"," for ,lanlc derorution u. con.lured. It I, tOUl'lo1 tho. thh ... _Uon 10 ".Ud only f or Intordlffudon .....r ,~f(Ic1.ntl, 10 ' " clt.to.....ul... • • ",1 • • 1'001,. _ l l dht ........ al ••• pl.. tl c ... f" ... tlon Of clIUu" .... of t ho · .l ....u · coeponont un be._ th. uto . ll.ltl,.. .t. , . Slneo p loa.le ... !0 .... 1.... , ..... <1.0 b,. r oh. .dctnel uthor thin clHfuol_l U ... tlu • • 0(. .1. clUr.•• lon • quatlon II not nfnclent to donCtl'" tboI ovwrall l .. Lot dlffusion ,."". . . . . _11 cI'-to""... !J
();OO p ••• )
INTE RO I FFUS ION ... NO THE KIRK EN O"'LI. EFFECT ... T SU8MICROMETE R PENET R... TlO NS · , .... D. Romig. Jr.• Metall.r,,. Depanmenl. Sandia National t..ba probe micmAnal'[l1:f(B>M"'). Tbec penetration CIln'U mcU\IItd. by thex. clot1rool opcicalltCMiques an be &/IIlned usint the clwical MaolJlO IpptOKh 10 de
••Ioci.,
(~'2~
p ••• )
lVlM eatllMTIOtI _lite D]t:>t IN ~l A,.e. IYIYEII : HulR 1 !.qPU lIou. lolo _nt I1nlvu.I.,. of \110001\01"·· '"1-,,,"'" .... Ilo •• of Ina' ....
Doo,...
OlCM .... ob ...... d I .. dlff~ oI"" .... pl ••• ro4uc:d 1>,. v • • ~_ ...up· n la.lon of 0 c. ".l... .... ouMIri . . •• hlbl.04I. _ I ..... ' .... "."",. for pia...... t l .... . "'ro"'........."i ... _to ' ...... tod In o f ' M . 1.... 1... -"""ry or l o ft .... h lnd .'" ..r..... I... In ... r.oo. ""'" ....... 11 .... ( I U b) rU~ lt .d Ln ,boo .&Cry. t .lI l ... lo ... r ..... ... 1... .,ltbln U>o ""Ik. Appor.ntly. __ .. f '-". """,100." ...1... loot! • • ull .. u, . .. llo... phlc ... I .... . Uon .. . .... hoOl I . ttl. . . . .""",."cI bJ the . I. n o r ' win ... I.nutl ...... . .It"-lh . U>o a.c.... 10 thoo .......lly .... '~od cI.I .. I,.. foreo f"r DICK . (to opocl flc r "l . b _ t _l.tol,. 01... . 'n .~b .... n. It I. ,,,"u •• cI tba. loed _ , ... 1......... bo.tl1 d ...... a. P .. _n. . .ro r . .,.... lb l. ror thoo ' . ... re <' on o f ... 11>0 ....... tl_ o f .h. v. c."",. c,,",lt. 1 ,., •• nUIl of ,h. • ...... . ~ry "'I,.. .ho ,y drl"l", fo.co for DICK yi' tho ,Udl", aM/or clUtl>I ... of JIt dlol ".,. , lono. 1M. lnoh,tloo. -r ....,.Ut.l1,. fo vo<&b lo dlol"".Uo" dh • ...,l n lon ... col .......... h • • • b. ",,,'10_'" o f dhl"".'I~1I partl d. "'po".lblo f~ • • h. p . ..... c. of ,win •.
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METAL SCIENCE OF JOINING IV: JOINING MEl' ALLURGY B: Behavior md Modeling Sponsttred by TMS Solidification 4nd Physiad MetRUu," Committ«s
Tuelday, P.M. Oc:tober 22,. 1991
Room: 200 OndnnaU Convention Center
Sessio" ChRimum: S. K. Kang,IBM, T. J. Watson Research Center, P. O. Box 218, Yorktown Heights, NY 10598
TMS Fall Meeting-41 """',,leO! boOhnlor of t "" . . bond "_110. t .. 11 n·pl."" . ..... . ond bL ul& 1 . . . . . . . u . . . . . IlL .1 ... be ....., .. ib..t. TIl ......lic •• U ..... of ...... bol>a.!on to "NI.,. ....... - . . . . . . . .111 boO
dl..,. " o
1"OS
p ••• )
HIGH TEMPEII.ATURE COMPII.ESS ION CA:EEPOr EUTECTIC A,.Cu ALLOY AND APPLICATION TO METAliCERAMIC JOINING 0 . Ll.
~. S. N. Bu",hcn and F. M. Hoskin" Sand.. Nllionall..obon.
AlbuquetqllC, NM 81185
Stull analysis of c .. 'tctic A~-CU 1nJ.t joints !! imJlO'?"I 10 )X"Qlicl residual _ , (or • ..wty of me<~c joinin, ' pplX:llion.. In particular. Fmire Eiemml AnalYJi. codes hsr"C ,he c.pabilily 01 illCO']lOfltinll mini .... '" creep nte conStiNti"C mr;>dc) for \he lnzc material. Thil paper ~IS IIIe mullS oi l wdy 0I1hc r;omprmw ""'"p bebviol' 01 eUI«tN; AI-Cu alloy It temper:aNn:1 up 10 7SO"C. AI 7S(f'C I stn!SI e>pontnt of I.'!! obJerved • .... hich JUueswQt temperJNn: tllwned (35O"C), I latll e>ponen1 of S.7 ;, obtained. ~ ~trolltd lhe; A,·rich pIIqe.. "IlK dill ha"C been fillO I powocr IIw cqIOIlIOII wt.idI """II'". I ~ stress UpOM..!. This COfTdIIion !\as been -.f for fE..\ ellculalionl whicII mood die SCiUICI obIcr.'eCI in a mHa~ tn.c joint. &arupIo.s of thea cakuJ.lions, lion, wi1h I ,~ .. mullS usinJ; In r!egjp.pJoqjcCOO$!jruli.., mgdrL will be dj1Qlw:d · No _ .. S-_~~.,.U.s . OrfIl.o(~ _ __ _ DlE..t.aM·16()I'OO1t9.
s."utin,
Il,lS p ••• )
PROPERTIES OF SOME lNlEtMETALUC COMIOl1NDS COMMONLY
fQUNO IN SOLDEIl JOINTS, B J Fleldl and S. R. Low. 111. McullurJy Oivilion. NIST. Gailllcnbur,. MD
In every .older Joint, btn>ooeJI !be IOIder IIId !hi: .ubstrlle. I layer it present oontaIII.i", one or more irurm:lil)ic eoftIPlIUIdl. WIIM role (\(Itl Ihb layer play ifllho IUCUS.1'IIJ fabrieltion IIId teliabilily of jolnts1 1M INwer ID 1II11 1J1Ulion ~I ck&.Ii~ ~ylil, mocIeiJillI, IIId IAlirI&: of Jollied n,l tefUll joinu. It b CQ- tIIat eenain pIty.Q) and I'IICdIanieaI propenie:I or !hi: solder, ~Ik 0CIIIIp0IInI!'. lind. IUbIIr-. -w. 11'1 IIIedood b" sud! .. 1IIICIcmIi:ina:. Of Ihesc prapenles, IIIotc of 1M mm.cwl~ c:ompl\IIIIb are Iho
IeUl wel)~. We ~bcre!hl: tlucie, plucie, n fraaute bthnfor rn.m ICI lOCI C for ~Sll., IIICI N~. We will dioam die deJl"OC .. Mokfllllae dltl are ~ .. a-mewlic:t Ia IICIUII joInQ. We abo npon cht IhennaI ~1Dn c:odfIdem, IIIetmal ditl\oah-ItSeI, specilk kMI, IbermaI ~. clec:criaI rWslIvUi. a.I ......itlu b" Ihesc ~I. C".omporiaoN ..n.t. pm-ioIaly ~ dMI wlU be II\I6e ancI d\JcnpMcieJ d;,o."Md. kelUtttl~bylhe U. S. Harry D~ I...tibor.ory .
cv.sns,
0"
Ann, ·
br
C4,)Q p . • . )
TlfERMAL·MECH.o.NICAI.. MODEUNG AND EXPIiR1MENT No- VE/UFIC ...T1ON OF RESIOUAl.. STR.ItSS DISTRIBl.ff1ONS I.N FUSIOtI WEIJ)S' , L W Mobi" W. 5.
WI"",,,. E. A. Noell<. 5 _ No
CUlt; Ri_ NIO<:Idr
1loo
f--. or 1IIIf_ oaiduaI--. ... _
or ......
,..,.,.ro.-.. II well .. _ _ ..>IIil., . ...-.. ~ l ·D"",, }.oD _ _ ...... .... uist. ..IIicIo
.. __ ...
~
poox... ... _ _ _ _ . .
pr
- - . . . , 1 0 _ ..oditrol"'" _ _ _ forM:..-. _ " " " ","'}'II
.. _ .. -;r'''''ol.Ik-nl
• .... oIIIioL ~';I to< pIotaI .. lilt 0fIIlIiu0i000 01 ... - - " .. -ioI<:U~ -fouurioot- and lilt _ '" do< ~ .. c..a... die 011''''1 or ........... - . . .
coootiPou ..... _ II _ _ ...
r" ................
_
01 raioluooI
~
~
iadle ...- . (2,50 p .•• )
LlFItTI M E PREDICT ION OF SOLDILR UNOILR T H ERMOMECH"NIC"L F "T IGUE: WrmkIJ B )Ana Sand i. N.,ion>l Laborato.i(J, Nbuquerquc, NM 87185.
Clft'\>"flli'.... Ji~i"'" prediaion rnodd. for wJcIt. alloy. m n,,"SUI)' 1001. in ,n., """'pltte of fOld... in ".mpo ....ich ... w"."dl' ........ M.,hod, ",hich ho.. found wc.ca. ..j.h (M~r .........1'21 oI\oyJ (•.t . COfl""'·M......... ....in I1In&< p>"irionincl hovc beno .ppIicd '" danlQ. alloys "" ......., -.1<.... n.. .... of 0D0dd. lOt tikli .... prp ....o,
.rn:
cleo..,
io"'''
""cit.
me
nwk"""""",,,, r.......
The Sa...!i> portion ofm;. _rio ...... WPPOIIN br ,he U.s. ~IIm""o(E ... 'K1 und •• con,"Ct number OE-IIC04.760PlJ0789.
•....ort .. ppontd under U.S. £\qlI. 01
Erler., """..... Di.ACOI.16I>I'OO7I9
_
_.........,.-_ ...... _--... ., .._.OJ ......-__.... ........,. .. - -.-.",-.. _ ... -.- .... .,....,. . ... -- ............ ..._,...1o.. ,. .......... "" __ 10,55 p •• • )
Efl'l:i:TOI'rotIvEeTlOHOH W£lD1'OOI. DEV~: ~ !: . .... _
v;..o. - . _c..... ~ 000 .idto1f__
... ' . N.
l.obot..,. 000 ..... l1< 17l)'""llS
W ...... io · ........ _ _ ""' _ _ _ ••. . . .
---..
....
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- - . _ . - . . . , ... " " ' _ i a .. .. w,..._~....,
- .. _ .. _ __ ._ .._ -.u,...,.... _...._r-. ..... ......_ _ _ .. _ .. _o/I _ ~
it
;.~
....-,...I""'_ . . --.,-, ...... _ _-.r-"" ........ ·."... 0I .. "dtI ,.... n. •..",.
'.. _ ....1Iow loIioc. n. .. ..
--~io
01.. _
. .w._ .,""'"
...... _ 1 0 . . _ , . . . _ • • " .. <11 .......
no.poal ".._ '_
... ...... pooI...-I...." <.. "'''' pool._ _ _'".... .... . . 01. ' ._tho~oI"" -. 11M..........,
,.,..._.Ioo..., ,... ___ ,,,,,,_ .....
_.,J_
.........- - eli.,.; ....,... _ ..." ' _ .......... tiro ,i.. _. - ' " _i ••• por""-al ........
(3'1$ p ••• )
V. .
TIt£ APPL ICATION £If FItACT1.IRE MEalA.'~I CS 11) SOLJ)ll JOINT F"'IUI~: l. !. Pru\ IltId O.J. quunel, Jt.d>niUI Enlb... ln, Iloopan. . u , blnu"tr of ItoclIcotcr, JtocMsur, MY 1(621 . T", "*,011"",,,,, ... of as $OIde.1d 6OJ~O Pb'Sn Join .. ar. known 10 IIIIder !lie ao;tion 0/ shear do/ollQtlon. Bolli nlr ~ a'Id sIItar lltigul IoI1d1n9 producI awar...11)1 sinI~ar ClO'ISItfIId mic:rosIlUCUKK. In ItIiI lJUdy • ..,.... Q'tep biding is l1l«I10 inllOduce. ClOIfMfIId bind .1 the mouth 01 • compId ltnsion specimen . Comp/euion PI~1d1lng II IISId 10 InlfOcluce I sfti,rp 11Iij)1II (DCk willlin IllllOIdIr. The ~n Is IHIed willi pt
_ -. ~-_ .""Mo.
..... 0;.;,;", 0 1 _ " , JlE.~-IOOR2'
_
_
...-.n,_.-.r~ .
sn-... ......... 1 _ 0 . , . . - 0 1 _ 0
""" .. _
........
bo<.
c:o.-
micnUIrUClu" II r$POfIed and CQmI)IlId 10 1101 IMhavior 01 1101 IS _ r i d mlc'OII"X:lurfl . MiclOQ'aphs 01 pa.tialJr Irl(:turld sl)telmenl ",i)1 be lho.. n Indle.lln", lh. e.ac~ P<'lh lhrough lhl COlrUntd SJruC1u.es. OJsc"'sion wli Olnle. on III' medla,",m! r~llbie lor ,n1 diMe'lnces in J»hlWior lH.buI.bIe 10 1he presence or Ihtr ODafseMd twrnd micfos"uctu". U,40 p ••. )
1111 ICdWl I CAL IlC!LOVI Dll1 or ftll.-IIIUac..o.'D .JOIn •• 11.1. "'''P''. o.,.e~n. of MehAAlc<>'l tnQ' .... r l ll9 . 0.-.,.... Itu. an.nnl."
ear-nIU., DII1 t7J)l -t.OOl.
!.~",Uy )0' ....... iO .h ln " " I lie In •• rla ..... o fhn o f I _ r ote • ....,.n ULIIO .... 1>&. . . . . .rl. ' .. n..... iM •• I'yon ... o l"n pt'l"' r .-i by ..on_ntl.....a bntitl9, blot ..... ~nUy ..... 1. 1. th.t e.nnot boO . . . 11, _lc•.-i Ot butN />&.,. _~ joL_ uoLn, IOol1d-.uu t..,hftJ...,o. ....... . n. lft.. ~l ... r • ... P.. I;>y • ~ . . l*1:r of ....."c.d """"'...... and t~ • ..,Udn ... bond. o lt." ~ •••• yporlor ...,/>&"le.1 pOdor..nco to b" ..... ••• _11.. . "'11 .ott __ ta\ l"u.hyo< bond. h ..... yniqu • ....-,h."l_ e&l P.~.H. . . 11<1. • . . o! bot.h tuM_nUL in...... an
1\.0. . . 1&1 • •• •
p..'"
_101......
NOVEL PROCESSING, DEFECTS AND PROPERTIES OF DIAMOND 8< DIAMOND-LIKE THIN FILMS II Sponsored lTy EMPMD Electroni.c Plwtonic Ot!vice MateriA ls Committee
(I
Tuesday, P.M. October 22. 1991
Room 201 Cincinnati Convention Center
Session Ch4imum: J. c. Angus, Chemical Engineering Department, Case Western Reserve University, Cleveland, OH 44106 12,00 p •• • ) (lltVited ) JoICCIWl ICAl P'WPUTIES OF OI~HO AIIO OIA/lOllD-UU fil.i!s: Clrl J. III:JI,I I]Ue, Department of Mater t.ls SCtel'lCe ,nd EngIneeri ng, Unl.eTstty of TennUtee_Kno .. lll. , ~no .. 1l1e •
T.nnenet
31996-2200
INrdl>en v')utt or dlDlOnd f ll"" pl'f~ ... d by t"" CVD proceue$ I\e wHh ln tile upHtl!lenul sCltter of ..en other lrod thn of ,
1m II. n.tural d l _rIII [(100) ftc .] testtd under the s _
42- TMS Fall Meeting corn:litions. Euenti.lly.ll penetration of th!! ind!!nler "U elutic In nature. T~e !!lntle IIICIduli ..., ..... 100 t~!! SPI! . The load-defl!!ctlon curvu for the Type lIa diamond Indicated p"~ly "lutle dafonnUion but thos!! fOr the fil .... ~.".."j • slight departure fro.. purely el astic be~nlor. flaNlneu value, of diamond_like corbon films He in the range 5 to 15 GPa 11'1<1 the thstlc lIIOduH are In tile range 50 to no GPa. lhe properties of the substrate materi a l has a large effect on the mellSu ........ nh for adherent films and a less but significant effect on nonadherent films. f1,lO p .... )
(~, l~
p .... )
Diamond Deposition with the Combina tion of Laser a nd Hot F il ament Method
X.K. Chen and J. Narayan. Department of Ma teri als Science and Eng ineeri ng . NOr1h Carolina Sta1e Universi ty. Ra leigh .NC 27695-
(Invited)
SURFACE NlO INTERFACE UUlTEO PltENOllDiA IN tDW PRESSURE 1>....-0 Sl1fI'HESIS, ~." ..... ~i, Lo<:l
TU convenUO"o.Ily . eeepud
gradient oear the sa""le surface. lie will describe t!lf! expertllents and results on three kind s of sa~ls: isotopicall y enriched synthetic single crystal diarond. evo dialllOnd thin fil ms, and didlllOn<1 - like fil~.
a.,.,.thuhe diemond a t low pu .. ~n a ;.. l>ued On the ~_ of • .".... nuur. tl.on of hydrll\l"n !.Jl COOIbinatlon with • ~yd roeu_ ... eh ..... thane !.Jl a n activate11lu tt.. dl...",d pIIa _ of carbOn u .... Ii u to •• lacHvely atch any no7I_diuoonll pIla. . . lo.-d. In thio -c""ni... , .... Influenet of <.he "".faee of the 9"""'''9 oOrnl. 9..,.,.n h typica lly i""o'''' . Recent r .... rch ""99"". th<>n .. """ .. in InflusnCin9 an qua lity un bot a t ""'y h19h concentrations of ..uhane in hydr09en if surfac e b peri.dicUly .edyne& ch
t.o
PI.AS MA W. W. ~,
.. P,20 p .... ]
DEVELOPI'!£NT OF FINE GAAIN DIAMOND FllJo!S. Ricllard L,C, Wu and A.I<. Ral, UES, I nc. DaytOn, OHI and Alan Garsca.dden and Patrick /(ee , tidgllt L.. boratory, Wright-Patterson
/\.Fa, 011
Tile production of tin .. q . . 1n she di.mond (il", is i"portant for optical a nd triboloqi<;;.l applications . Micro.. ave pl as m" cllelD.ical vapor deposition teChnique "a a used to depo s it diamond fU .. " on S1 (l00) Subatrate . By controlling both the Sur f ace chemistry (surface treat.... nt, substute temperature1 and tile gas phase chemi s try (initial gas f e ed co~o si tion, pressure, flo .. rate, and plasma parameters) , tine 9 rain sizes ran9ing trom 200 to lOOOA dia ..ond fil .. s .. ere synthesized . Various techniques , including X-ray diffraction, electron diffract ion , Raman spectroscopy and scanning e lectron microscopy were utilized to charact"rize and confi ... th .. dialllOnd films . The 9"aln siz es .. ere determined fro", bright and dark field electron micrographs . The 5.. 1fsupporting filmS were founo _~ be hi9hly transparent.
(3:45 p .... ) (fnviud) TflERHAL PROPE~T{ES OF DIN«lNO .o.ND
DI~O_LfkE IlATERfALS: P.k. kIlO. Deputment of PhySics aod AstrollOlOY ~od Institute for Kanufacturlng Rtose~rch, Wayoe SlIate lkliv~rsity, Detroit, JoIichigon 48202 Oia!'l:lod crystals and thin fi l~ present a IIII!l'ber of diffIculties to the lIask of characterl zi ng the i r t henM I propert ies. The fiest difficulty IS their e~c eDtlonally high thenllli conductivity, t .. o to five tiOlleS higher than copper at roon terrcerature. ThuS. any the~1 couple or heater . ~de of lesser conductin~ ""'terlals. .. Ill contribute significantly to the thel1llol1 resistance to the s~le .. hich they are attac hed to. The second diffIculty IS the !.IIIa1l phySical dl...,nsion of these OIaterials. One is ofte n II .. ited s.""le. llleasured in millimeters Or even nlicrons (as thickoess). A third difficulty Is for thin films. Often !t is desirable to measure their tllerlllal Prop!!rties in situ, i .e .. ..hile still n t ached to tile Substrate . .. hose thennal IIISS usually overoheJms that of the films. To meet these ch~llenges, we h~ve dev e loped a themal "~ve technique to measure the thermal properties of these ~terials .. ithout usinS the traditional themal coupleS and heaters. A laser bea .. is used as tile source of heat aocl d second laser is used to Jnterrogate the tnermal
7916 Diamond deposi1ions were performed by (he hot filame nl CVD technique wi1h laser bea m incident on 1he s u bsfrate s urface . T he nuelea lion, g rowth mOtp hology of diamond as well u Ihe co· dcposi ti on be h av ior of graphite were s tudied . T he films we re CharaC1erized by scanning Elec tron Mi croscope(SE MJ. Transmiu io n Electron Microscopy(TE M ) and Ra man Spec lr oscoPY· (4.J5 p . • . )
WC Laycrbctwecn (100) Si Subsntc UId Diamond FIlm
T. SUot~' z. Li, I. W. Yans, 1_e. Anlus. and P. I'ilOllZ atenal, Science and Enpneainl, Case WCSIrnI Resc:ne Univusity. Cleveland. OH 44106
Oepartru.:nl
Di~mond fillllS ""IS deposited 0111 (100) Si sul>s~ by !he ~hDiquc of~ filarnr:nt chemical Vlpot deposition (CYD). Cross'>CCtionallpCCimcns wen: pepared and invcSligated by COIl~entional (CTEM) as we]] as hip reiiOlution Innsmission c1eclrotl miCTO$COpy (HREM). In"""", casco, two interfaciallaycrs were observed: fuS! an amorphous layer directly on liIe $Ubstrale on top of ....hich ....u a second cry'tamne bI nd of dark conlrl.S! adjoininl the diamond film. The amorphous la~ had athickfteSS of3-3 nm and it had possibly formed by plasma attaCk in !he initial stageS of syn\llesis. The occond l.~, with alhicb en 0120-30 nm. was. pol1~-ry ... lJi ... film with relari~e l y n .... gnin. (-20-30 nm). Usi~1 electron difffllction. HREM. and EI\UlY Di~ve X·ray. (EDX), this film wlS f""nd to be we. II is thoughl 1lu.t in this p&rtlCUlar deposilion . w e had fomx:d by \lie .minion ol,unpu:n ltomS from the fihunenl and reaction wi\ll carbon. On lOp ofl11c:K 'WO interfacill iayers wt:fe diamond panicles ol O.~·1 jI1M site which were n<>I connected to each OIlier. The dilmonel panicles .... en: randomly ori ...1Cd Ind tl1c:y all had a high den~ity of twin ..
(4,SS p ,".1
RAMAN S'I'UOIES OF DlCFD..MS DEPOSJ1l'D BY LASER.PLASMA ABLATION OFGRAPHlTE. A...BmI&o. S. Pnunanik tnd J. NJQy..... , Dept of Mau St.•• ndS. J{ri,h"acuUy., Depl_ of Elect. EnU., North Carolina Stall!: Univ. Ralci"" N.C. 27695 A now:ltcchfiique IISin, I.... r pllSn:la ablation of paphi .... deposiu DLe films with
unique and CQrItrOIIable ~_ Sy>lemaOc studies ..ere curicd OUt as • function of i""reuinl $ubslrl.te 'emera,,,,,,. Raman rnr:uuremenu showed admvnshlfl and upshift in Ih. 'D' and '0' band s respectively, nUtslin, a chlnv in tb. micwsb'llCnnc. The half widthS of both band.J became """"""" and !be Idle ..,io increases. Th.se facton SuUtsl I vowth in Dne of the sp2 or Ip3 bonding componenu. Ion impan1l1ion and luminesccnce (Raman) studiel 'Unell lb. presenee of a defect band in films deposill!:d 11 low substrate ICmpeJlturel. The lvIe photolwninesccm ba11d IIT4'1ies. high density of defect ....tes. ThemuJ onnealinl S!udie. abo.how on incruse in the 100000"tio, howe>1:r!he narrowinl of half width of ,he '0' blond i. nOl observed ..,ucstinllhatlheJmoJ .."i~ation e""'BY assills in the formation of Ip3 bonds. but IlOl in lheir orderin..
I""
PARKINS SYMPOSIUM ON FUNDAMENTAL ASPECTS OF STRESS CORROSION CRACKING III: Mechanical Aspects Sponsored by TMS/ASM-MSD Co rroswn
& Environmental Effuts CommitJee
Tuesday, P.M. October 22. 1991
Room: 302 Cincinnati Convention Center
Sesswn Clurirman: W. W. Gerberich,
University of Minnesota, Minneapolis, MN 55405 (2,00 p ••• l &TCH PlTTIHG ....D nRE&S-CORROStOH CRACKItfG OF COPP£A SINGlE
CRYSTALS, K. Sieta tkki. Department of Ma(erials Science and Eogneering. The Johns Hopkins University, BaitimOft!, MO 21218
We presenl lIIIidenc:e Ihal shows for the firsI time lhal an elementat mGta( COIn undGfIl" slless-(;Offos;on aadling by an anodic dissolution process undM nominally film·lrse or activtt dissolution conditions. Oriented Q)pp8f ~Ie aysIal samples le$led aI high strain rales in
TMS Fall Meeting-43 cupric IIII\InOrOa soMions undel'go _ . strl5S"allTosion craclo.ilg. The oa:ooence oj strlKS-<:OtrO$iOn crae!
11,1) p .... )
tIIId Inllmal h)'drogll'l tn'tIIInIIrnInl 01 austlnlllc II*tItu ateels. A1SI 301 tIIId 31 0S lII.IItIriIic IUin_ IUH!II hew been iIMIs~ 18d In sodium
d'l1oIIdIt IIOIuIions 01 villous _"b
or
T HE EFFECT WCAL DISLOCATION ARRA";CEM £KTS ON HYDR OG £ N.l l'I'DUCED CLEAVAGE: W.w. Cerbnjtb , P. M.I"fh .... d H. H\I'~, Dept. of e MI'" En,. &; MI.I. So;., Univenity of Minnel'JOt., ),1;0nnpolil, )'IN SM~.
ConcqlluaJJy, hydrtlf!m dtc ~ uet 1M fore.. required fot ~.t ion ~ r<>$O .. cl~.""", pI...." Here , thi. io inttrp..eted in t
I:ra.
to ad m>ucd 00 d iJ<.rd.ized di~tion ..nanV"""'u in anilOIroptc e1 ..nic medi ... Th .. i. furl~r ... ~"Jop..d hy comparioon 10 ill ,;1_ TEM and u . il_ eledron- cbMndi"$ ,tudi ... of thin film and hulk iron ·b&.oe cry. tab. Applyin, t bi , 10 internal hydJ"O&C1' IOIlTeeo , .. threohold model i. d. rived_ The limit of th'" .. ilh ~rnfi"$ concentration il Ihe material f'ac'uN: lOu.hneso. II i •• bo .. n tb.1 thi- . ppr08
I; re."
r ...
12 ,SQ p .• . ] EFF£CT Of' H YDROOEN ON 'nIE MIXED NODE f/ III TOUGHNeSS O f A lItOil I'lJR ITY ROTOR nul: b!' I,A Ggr4M A. XII.", J.r. lIitd.. WO$I\InJI"" SIal. Uoiw
NOIIoaa\ Labot ..on.o.
w..:'"""e. CA
!lo4m.
""./ut .....
J ;". ,tlllUt .. e.l><. PIIl<' .. OtOr lied. n.e "«! ..... t .... d;" lhe _'I.d < ~ ' " pIoai< ;..,. . ., .
doa,"
1iI}W."
n.;,. _ ~ ;. .. pportcd II.,. oh< Naoi.aaaI so._ F
.,,'"
(l , 15 p •• • ]
ZONE MODELING OF ENVIRONMENTAL FATIGUE: I'PROCESS i' MS188E. NASA·Lan, ley R"s. l-lamplOl\. VA 23665. . nS R&D eo.p.. R. P;~"'ik.
Ccr..
namunhy. Mobil Dallas, 1X 712.«-4390. P. GanJloff. Oept. rA Mat. Sci., U. rA Vi,,;n,,,, OwInttewille, VA 2290)..2.«2-
(4 ' 40 " . • . )
EfFECT Of RlJ'PU! LOADS ON STRBSS-COIIJtOS ION CRACKJNG:
l'..S.£aa, R.A. Bl ylel. SJ. Gill , and D.A_ Meyn, Nlv. Re&o:af"("h Labnntory, w ....inllIII'I, D.C. 2037!1.''''' G.M_Yoda, Offoce of Nn.o! RerearclI. ArlinJ«tn. VA 12217.
The ~IIIOC oL ltNaWoi moIeriabt 10 ~ cno::t.irtc it cortKnlll'lly - . - l in _ oL "'" IhtahoId _ - ~ footro< (KbI;c) below .mid> .~.""" I'ntcIuuwill not....,.. in .. ~ .... Kowcva-, wtocn • ....u cydlc (or ' ripple1 bd itt ...... II_F-.incd lo..t. frI<:Nn: may oocw • _intcntity loevdtt nuct. dIIn klxc- It hill been founcIlhM !he more sec·1alstant .......... 1Udr • HYI30 bear· _-'eel Ti~A1""V.1IId OVCIaIeeI AI 707!1·173S1 on: mono ~ to rippIe.l(*! de,ndatim than tho: ""'"' sec·prone mooeriab I\ICh as hi&!>III1:S1gth M SI 4}40 Iteel, oecryIIIllizaIi-omealed Ti~""". and peqed AI 701S-T6~ I. ANIy'" 01 u.e
ir""*'" ...ra.a...'.....
.toeI.
Cyclic plasric dc:formaIion e.uottbues~..uonmmtaI crack powd!, jlIf1ieuIarly bdow KISOC, for ~ varic(y 01 marerial-cnvimounent s r - . E. ~~"
embrinlem::". and fikro nrpciftJ I'tpusivltiort modds upllift ItIis effecl based on
{rtq ...ncy and strain rill: dcpcndenl mek ...race: tlectrocIH:orio;lIIlUCIion and mUll IrUIspori kinetic!.. Wort 10 date has. howevcr. i,nored ""mace mech.a· ni$ITIs within the crack tip pn)CC~1 WIlt. Our ~b on SlCf
j) , t O p •• . )
MOOELING HYDROGEN ·ASSISTED C RACK GROWTH RATES IN AN IRON · BASED SUPfRALlOY." N. R_ Moody. S. L. Robinson. and M. W. Pern, SlrIdi. Nilional Laboralories. ].;vmn(R. CA 94S' I.(l969. w~, slUdied in prec/wted JaIt1f'Ia rA 1N903 10 detennine b.,... by"""cn from l aoe""l and ~ni.unmen ,. promoIu cnck JroWtb imRlpcnl loys. Thc$c te$I.I showed tIw ino;reosUtl hydrotu concentrations dran\a.ig.lIy i ~ued crack ~tlI nIcs by illlht disJocllion pile·ups. a m:x\ified critical frar;IIu'C Strllin criteriol'l.11Id a cri.ical hydfOl.n e~ "IJI!'OII for fTKtun. This model .... 11 be p
Crack pow'" susceptibility
""UC<>".
"Thi. wort S
Ttt' ROLE OF HYOROGEH IN THE STRESS CORROSIOH C114CKlHG OF AUSTENmc: ST.... NLESS STEEU AT ROOM TEMPEIIAlVlli . Haun·Kai Juang tIIId Cat! " lIlelllr. UrWersity ot IUirtois. Urbana. IL 61801
The abjIctiV'I of IhiI 1!tIdy Is .., e~ the ~ of .mbient JfmpIflll.re crack IlfOI)IOaIioll IoJntIicl in aqueous SOIuliolls 10 [JaSeOUS
PHASE DIAGRAM PREDICTION IV: Thermodynamics and Phase Diagrams, International Symposium Sponsored by the ASMIMSD TknmodynAmics (lnd Phase EtfuilibriD Co1Plmitt~
Tucllday, P.M. October 22,.1991
Room: 204 Cincinnati Convention Center
~ion CMirmar.: H.-J. Schalle r, Inst. f. Phys. Chern" Univ. of Kiei, Gennany; H. Brodowsky, Inst. f. Phys. Chern., Univ. of Kiel, Germany 12 ,00 p •• . )
THD.MODTIIAltICS or PHUt DIJ\GltJ\IU , II. ro. Ooltcen, 0 . 5. Bllu"u of lI inea, II lb .. ny. OR 91321 -USII ; 1. 11018', Pol1oh Ac .. d~mr Df Soi.ne•• , )0 - 059 K• • kow, pol Ind . Direct Celorlm.lty, diff.rentl.l .oa nn l ng c .. lorim.trJ, g •• -eonden • • d ph .. . . equili.bri .. , . . . 1 .peet ...... trJ. 9alv.nie eell., th . . . . l .n. lrda. di ... no1on .. 1 .. n .. l,~i •• and r • • i.tivity f ot obt a ining re li able d .. t. ..r ••• vie_ ed . Cri tic .. l e_ .. lu .. Uon of thlr-.od)'ttude .. nd ph .. se bolmd .. rr d .. t .. obtained by the,. _thocb . r e 41."1.1 ••• 4 . fteth04, ot ... tl"tl on of ph.... hound"rte' .. nd t henr.odrn ..",ie
44-TMS Fall Meeting (l,~
p ••• )
'rIQ: POIIt:~ or CKDuCAL
-..noc;
IIQOCLII
rOOI 'IW)JC1'IOII or T'IIP>O-
""_t.
ImWtICS t.KD Pl!UE IIIAG1W1S. Leo o.p.ut.-nt of o.-i . t'1', unl . . uitr of CaHforn4 -..I ... t
r_ ...
1.0._0........ k.ley
LN>or~u>ry,
. .. koler,
a.
tH111.
",. - . . . . f ... t..rld. w _ t ....... c_l<"l lul r_ire _ _ nU lnvol .... . eand.s.nUan of tM p~rU •• o f ..... , coebln,od "". of tl>e , I_nu tot ..... \,," . . peri_nUll dau on ...... noll_ oblo. ".. . . . .In.ti'''' of tho v..-I.Uon of • property ouch .. u.. .ntholpy of fon.oti"" .cro .. d'" plrloolle t olli. of Un _ . not yield nl1ol11. "' .. rpobU"" .... ntr.pol.U"" . of 1 ...... _ ul .. vorl.t lona. 'I'l'IU probl_ ,,,.,, be .....1 _ by "'rn-"ober-typo eycl. . In .. hlc~ thO bOnding h d. .crlbod In t . ..... ot t'" coebln-
be<:."..
pil.... Ttl".
.t""", ... ,,,,,,, of tllo ..... ,1.en""l" confi9l>utlonl . . In tho """oSen.. d tor U>o .Ikdl ""uoSe., tho bonding I tUn9U1 for tho coeb1nfoU"" .. f g ....... . I"". "lUI till _ chor'l" and d..,tronle eanU9llroU"" . . . in tlwI 1000IC ooU.""Uonl of . I _ t o c:_ 1>0 PI'..,ieted.
adon 01 9'"0'''
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;',"~~'~O~O~'~'l'~'ii,:{::;:~ I
.
TII£ CDIIPOIIIID-£JIER&Y IIOO£l TO 101liC COIIPOWiDS. I'I\yslul IIoUllijr'9Y, !toYII I ~H. T"ehno l ogy. Sweden
ChlrlcttrhUcJ of the to.pQund-tntl"9.l' IIOIIeI .111 (I r H be The consequencts of the of tl« trOMutr.llty .ill then be disc ussed, In • fth re ference to llrgt dltlbuts. Spec Ific will be ghln, .. Inly Involvln9 .'~fd o,ldu.
::~m:i:: lth the bor>d- fMr 91 .,del.
," ,aop._-I (r;,.rIUtlllUl'l NUl D1AJ;1WI ..... 0 l_nw.. p, OF t~lI011 OF THE c,,01noP4 SI$I[" . II. c"vno-[se.rd Ind J. P. arOI. S£TT-CNII S Uo\ 1168, UolnrsUI "" P",'fflCl c.ntre de S.lot·,k ..... Ill91 11.... 111. "",. U. h.ne • •
_ .Ies """"ro.4
.110,..
Tho p...... t work I I., to .""" """ hO(llrll101 ellorl.try CIO lilt v.. d to of . n.lll e T10t tl ......' "0100" I Il.y obtol • ..,.... .... . . loco.4 for this "","""". T..... I. f,.tII ... 01 till thfft Ii.U'''I1 bIOI.,. ')'1~ .... , I~ lhe GA_I. Iyilc-. I ..ItcU , """SO dil9r_, 1t....,I, ~rd. tilt ,.llI... rlt~ II"", . . . .. u, po.lth. ' "\1111,11' Of I ..... tl""; I. thl blO Ol/lt. I)'$~ (Go ' N ,M 1.'''1 , t ...... • ... H,"r.1 C-...t••"" .t~I, ""9Itl., ent"'lpl.. of lo_tl"". r .... t.11 I d _ l I " tilt ""tIIIlP1 If 10_11 011 .f till "'oIMI'd s)'$_ 'IIOold III It.... ', ... tIII ... lt. Tloo 11 .. 1... IvrflC' . In Inch"" two r"IgI ..s " I .... 1"" of tho lin jol_l"'! I"'" .... "N. utllllpl., .f fo_lI"" .f tloo "'I'd . ocI 10'" ."" ....... ry .110)'1 .......lIvrft i. r • ..,. 6OII-1~ · C . Two of
n.
t... t,,,,,,,,t.....'01',
t,,,,
Cllo.l.tar ..... wH4: • ta l vc l IJ'lI'I ~I.,. 1_1'.101....Ic.ou lorl.t.. .1Id , fwl1, ' "t.it.d very high t_rlt"'" , .Io.t.t.r. 11. . .b'og _II,," ... to .dd •• 11d ,.n.dh. 11.,1 .. to lI.,ld 91111.. or 1",11 .. or 91111 .. ' tndl.. . A ,u l Ubl . CIIoltl of ..",fl.,,"1 t _,.t"",•• Id otoI,l-blool'1 ,oct I""• •11_d IIOI~ I ... fl .-II llqvl4u' surf. ....... t ... fOOd . tlrnory ,ot... 1P1 of f",..tl"" to be
""t....
,1 , 4050 •• ') TH(RIt)[)YIlAMIC SruDlE$ AIIO PHASE OIAGIWI or Cd-Go -In SYSTEM . 2. "'Ut r-, II . Z,kulsU · , L. LuklS ··, II. StrkieMIU , R. CosuneUT. ~n · IIId II. ~eHlf, rclyk'. ·Polh~ ACId. of ScIences. 30_ St· Krlko-, Polud; ·~ .-Pllnck-Inst. fwr IIt:tl ll ., 1)...1000 Stcrtt9llrt. Gerlllny; fTech. IInh. of " 1.lng Ind IIotll1Urgyo 30059 Kr. kow o 'olo nd; " CW, 13003 111I'Stl1l •• Frtnce.
"
In ...... prnlouJ studl n on tile Cot tile .nth. l p, .~d entropy of fCrllltlon ore tt.pe rlturt depen<1ent. lie l "vutl tltod tlIt Influence of tllUt ""uSUII propert Ies of Cd-Go 0" the the .... dyn..tc behlrvio r of t"- Cd-Go-In S)'1Ote. and on tile ttrn.ry _l$clb11lty gap. Tile thllWldyn.nlc properties IIf Cd-Go-In ...... dett .. lncd by uSlog two dlff, rent .... c tllln t.lorl_ters , followed b, vape r P"'u~", Ml$ijr_nts. The Tes~lt l ng dill were used In the LuklS 11\1! c'*\MIte, ,rog,.. to ,,'culltt t"- ph.sl dlig,.. . "Icuhtlo" ustd bl""rl cooff lcluts ,,"Iu"ted f .... existing d'h. Then eotfflclltllU WIre tor rected by usin9 the .... dyn .... lc di U 011 the Cd·"'-In Systlll.
j) , 211 p ••• )
CALCULATION OF TERNARY, QUATERNARY AN D LARGER METALLIC AND CERAMIC PBAS! DIA GRAMS FROM BINARY
Hl!CI:t. EJ.&r., UIliYenil,1If CiDd_uai, CillCilUllli, OB
DIAGRAMS AND BINARY THERWODYNAMIC DATA, MiWd.
Dept. 01 Muerlall Sci. awl 4S22I--OOl l
OUI caJcald;OII of t~e AI-{:, _ Fe-Ni_Ti floe <:Ompollhl pllKe diOU"" thoq _ ... ,roblera.t. We laD ioto dilfieulliel 10 tbe Ibermoo,,,,,mic detcripliO:ll of Ibe biDUJ phue di~'~I. doe 10 problemt wil h lhe dilI'e~ C'b tile beal e&p4ci ly, i.e., Cp(L)-<..-p(.) &Del wi lli Ihe ql:leltioo or phue III WI, . We bue I lbei:mod1l!1.mie model whlcll CUI rtiilbly ulrlpoilU! biUQ' elaa into letlw1, qltatel'Ull awl \&tiff ud, "ttrf impoftaJll, wit bollt utiq ImlUY Of: weer iDietUlioD paramtler.. We .,;11 briellr cleM:ribe t he IberlDOdJ'lWllk model, &Del eli lCUlf l ile problem. ";I~ Cp(L}-Cp(.) aad willi phue .11obi];I" U I~ .ppl, to IIliJ &tid other '7tWIIJ.
.,.term
(3 , 1 0 p ••• )
.Con\pIri.... bel _" ~ and pcdio;1
DomIine Scien!ir"lllC VictorGicnard
B.P. 239
S4~ VAN'D
procIietionllb!lln enlh. lpicl of formolion of binllY trallJilion Illoy •. We focused IIt.entlon on Iylle"" compo$Cd of one elemenl whh. nearly fuU -d band-(irnn croup) and atone element willi I nelliyemply -d lwId" (fi. Zr, HI'). Thi.ctIoice WQ limed 10 _ I~ warialions of d eltcm>n COIQ"nlnlion. in Illoyl when wa:ytnlllOlchiomttries. Natty aU systems M'-1: .Itea\ly bten SllIditd. lHUllJlR l;lIU .",j diKuneIMkI pnodi~ in order 10 live . picture of biu.y 1tan$i1;0fI alloys q ~Ie IS jXlSSible.
11,00 p .... ) PHASE EQUIUBRIA .... ND THERMODYN .... M.1C PROPERTIES Of NEODYMIUM AND NEODYMI UM-IRON-BORON "UOYS K. H_ _ and H ·J Sr.bIlkr , t~.
"""'"'
r. PIlys. Chem. • Uttiv. of Kif! .
TIle IhermodYlllmK ~ of Nd·Fe and Nd-Fe-B . lloys were determi· ned bet_ 700 aQd 8OO"C from emf 1DCIS\Ife......... on p honic cell.\ISini C.F2 q !be $OI1d eleetrolyte. The emf dID yielded rqrroducable aQd COlI.
PHYSICAL METALLURGY OF INTERMETALUC COMPOUNDS IV: Nickel Aluminides 1 Sponsored l1y ,he TMS High T~alure Alloys and Tililnium Committees Organiurs: Dr. R. Darolia, GE Aircraft Engines; Dr. D. Miracle, AF Wright Laboratory; and Dr. YoW. Kim, Metcut-Materials Research Croup
Tuesday, P.M. Odober 22, 1991
Room: 2021212 Cincinnati Convention Center
Session CMirmen: Mike V. Nathal, NASA·Lewis Research Center, 21(0) Brookpark Road, MS 49-3,
Cleveland,OH 44135; Andrew S. Culbertson, Naval Air Propulsion Center,
P. O. Box 7176, Trenton, NJ 08628-0176 ' 1, 00 1' •• • 1
HlOH TEMPatATtJRE DEfORMATION OF INTEIlMETAWC AJ-IJ:>VS l!l.Jl.liiI. K.R. Forbes Md D.o. ScemberJh. ~t 01" Miberi.tls Scioonee and EIIJinecriaI, Sllnfoni unMnlty, SWIfuo:l. CA !UlOS The bi,b lempe"'un: <1eformatioa properties 01 inlU'rTl
depmdcDCc oIllip !lll [ 1001 planes. Inlmnetlllk: alloy. with 1M B2 IIn>ttVfe tppeu 10 have IfWCI" potcNial for hip IempcrahIR tpplicllions. These alloys ~ parriar luly SIron, wheft used in si",1e trySlal and lion, a <100> direction. bc~lUse ~e Qy" s lip l ySlems I rt: no, I Vlilable in 'hI orienlation. Prt:liminary reSllI .. of creep Uperimenllon "nile cryslllsof NW are n:pDned and diKUHed. Recent result. pentl nin,lO the h;,h ICmpcralllrt: «fonnaUCf1 propatits of poIycrywmnc: Nilol I nd NiBe are !llso n:viewat.
rOrm
""*'ed
TMS Fall Meeting-45 'Thcu 1&IIer u pcrimcnll involve !he ule orwain JIlC lI'III.ienu 10 idonlify!he
oonlrOllin, moclwli""" or ddlll'mlfion. (2 ,10p .•. )
DlSlOCAnONS "'1'10 DUcnUTY ENH ... NC8ItEN T IN NIM, R. Glbool:o.. Depa , .m~p . 0( 1l.'e,loIl.o .sc:ie"a<:c • .., !",IIlft, la,. Tile Unl~'"It, o1l1idl.an. Au A,bot. III 48109.
10",
01,", •• • or dl.oloc.tlc" I.bltruc,urel c f tOOL) and (lBj o,lented NfAI .ffICle de fo. ned • • 'e"'", •• ' ."" 'lie '.lIJIe 17'1000 J( .re p '~ "ftled, Tbele ,eo.lI •• uporll!lenll a. e le. ated·tempo •• , u.e .. null., or (0011 c.y... 11 defo,med at }O(I 1( • • • 4 .. ech.M". ! cn "",face·fIIM cOited Il n gl~ c"., . 11 and duc t lle·phaH ,ou~ ~en e d 1'1 1... 1 and ~ 1(Pe,,,,U .110,1 demonltt.,e nechan lc" •• d t he,r.t.lI, In .. lblllt, of (lllloc.tlo.. with bi<11 1>..... e levl,ed t."'po •• ,u,eo .he·l.ot.blll.y of dl ...d b. U OO >, botb of ... bleb •• e .1I.. lIe u .em po.uu .... 01 .pp
C.",If.
I"
'eo"
pol,,,,II.m...,
""".lon,
c_
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p ••• J
tHE EFFECT Of M1CROAUOYlNQ ON mE ROOM TEMPERA1lJRE DUCT1LrrY Of SINGLE CRYSTAl. NiAl D.f. LI~Q R.D. field, 1.R. DotIbi, k. Darotia, OE Ain:nft Eapau. 0ntiMa1i. .
n.e de""Copmem or advatlCCd ,... IUfbineI depend. lipan ~rin , hip... tIpUIIiorW ~ and IhNsl IO wcicIII nOel. 10 0IQer 10 moet these
pcrf_ requirements . i.o.t=IIC ..... 1ic .... terial, such as NiAl are bc:illl dcwloped tor IIIrbine bllde ~ boe&v:sc their den$iIies ~ IlU:tlIowef !han a men. nickel· based I IIpcn\Joya ...... * iltl lII0I1 or die inODS, ill \lie .....'e orO.Oj 10 1.0 IIOmic percent. RlSde 10 stOichiome1ric sinJle "'YSW NW . SOttIC or !hUe aIJoyim, additions mukcdly ~ the fOOaI ~ dllCtiliry""lhw; ~t1)' 1l'I"cain& the yield ~. For caample.!he mom teqIerItln d\I:Iiliry In doe < 11 0> orientation *&1 inereuc and dlO> orieNationo; wi~led. Pouibk mecbanisms ill duailiry iq>l _ _ 'Will ~
"'*
" ,'0p ••. )
nre EFFECTOF Hf AND Ti ;.oom ONS ON 1l(E MECHANICAl. PRoPERTIES Of NiAl J R DobIzs, D.F. Llhnnlll. R.D. F~1d. R. DaroIia. G.E. ....ira-all En,m.1 NeunI&nn Way. Mail Drop MH. CiJlcinnari OH.4S21.5 In 1M que$< for bilbc:r thrurt ..... ...apt nDoo for jel ~ en,ina, o:nP
Cl,OO p .•• J
DEFORMATION IN NiAl BICRYSTALS: p 8 MjrJck . .... ir F~ WriJh. lI bonlO:y. WPAfB. OH 4S411 The effCOCII or. c:oocenlf&tcd Joo;:. 1 Sln=n .,; un. from eiu lic . nd plu 'ic in.compa.ibly . t Internal NiAJ pain bou,,,lIriu h.ve been invn o,lIed in ammed NiA l bia'yl'lis. ObKrvaDonS or surface $lip mukin. Ind TEM c~ara.aeriutioll 01 \lie dislocaDons ruponslbk for bic2yJW deformation have been made. The Jljdeor I disIocationsOll II ]01 planes Is !be primary mode of def_lion in tile vicinity of !be amnted bkryslll iaterfaces inYC.Sti~ The mKTOICOPic_ requirullOlCIivuc tbelCdisIocationt, in !he JftIeRCe of • _ OOIIOCnU'J.tion luch &I IIII.t prodlX:ed by I diiLocatioa pile .... p If. pn boundaty. is the same as mat ~ 10 D~kale. <1 00> dioloc&tioM in "Ioft~ rinJIe etysWl or NiA!. The movcmtftI or. d Olb dWocttionI wu _tina obsaved f. (>3 1ftlI) from the biayII.ll illletface. The tvnif"1CIIiooIs 01 these observaDons will be ddcussed.
manufacturers are nrnin& JO advanced rnllCriab tuch u NiAl. NiA l lw 2/3 the ""noiry 0( Iftsenl lll.lpUalloys, a hipu thenna! OCItIducIivily and a mellin. poinl If(lUnd 164O"C. However. binary NiA! ellhibitJ 10... Mn:n,th " tcmpcTllUI'C $
abo.e 4OO"C in spi~ or itJlliJh _Itinl poi '" and Q\"dtm:IllnlCl""'. Additions or the croup IV .... and VA elemenu dnmatica.IIy improve !he llill> ternpe), and n . *"idt has billo lOI~bmty (~ IOI<'-') will bt. di~ willi. an cmplusis 0!I 1hcir role ill irnprovin. the =ep ~ 0( NlAL
i. II\OII""
PHYSICAL METALLURGY OF INTERMETALLIC COMPOUNDS: Poster Session Sponsored l1y the TMS High Temperatul't A lloys and Tilanium Commiuus !*- "POOI ,ers-!OlW~ 5edion of the Final Progt.am 101" Abstracts.
Tuesday P.M., Wednesday A.MJP.M. October 22. 23, 1991
Room: 2021212 Cincinnati Convention Center
Dl'glVfiurs: R Darolia, GE Aircraft Engines,
D. Miracle, AF Wright Laboratory, and Y·W. Klm, Metcut·Materials Research Group
PROCESSING AND MANUFACTURING
Cl ' 40 P ••• J S~p
S)'IWftI in NW .... lIoys 0$ • Function oI Tcmpuawn: aM Orientation ~
D.f .l.ahrman.• nd k. DaooIia
GE .... iraati En';nes. I N='lIM Wly. CineinnIti.OIl NiAJ dispLlys hii/lly anisoooplc yicld behavior dlle JO.he iu Jftfmcd < 100.> .aip _ . The b-<1OO>disIocations .aipoallOOI and 11101 pIanes.t room lCtnpC'nw' e. orie'u"iorI. 11-<11 b are IICri~ III wnpm,uru below the ductile 10 brink nnsition tcnlp«aIUfC (DEITlJ, and 11-<110> diJloatiO!ls an: ""five at hiJher ICmperaclilU The~ I IiI' on 1112\ and (110, pl.lles. .esp t1is\(lCf.tions on diffeICnl slip pllKs. The I'C lative CRSS valIlCS'~ expeCted .0 . frecI cross·slip. and thus d"c,m ,y, In Ni .... l. In tbe CW"1l'nt invuliption. measuI'Cmcnts oftbese paramclm ha~ been made as. fun.ctiosr of lemperaH"" for botb hard (<:100» and soft (........ <]00» orien .. tions. In sddilion. 1~ efffC.Son sl;p I niiOU"OpJl of certain mic:toaIlo)'in. oddilion , found 1O'..:ruse RT !emile ducclily In NiAl will be dilltlllSal.
",00
p ••. J
DUC1UJTY AN1S01lI.OPY Of NiA! S INGLE CRYST.... LS: IU d. Owl, GE RAD CUI" . P.O. Boll I. NY 12301, R.. Damlil , GE Aifcraft EII,;nes. M·I9, Evendale. OR " S21 •
ScbeI>eaIcI!,
SII'IIeIUfaL application or NiAl lin&le CI)'$ItI.f. reqllin:, some duclilil:y 10 sustain plastic ddormaliOll I I room ~ Clmnlmo.. dependence of room lempcn .."" tenoik elonplion in NiAl u DaJe etyMa/I CUI be n tionafu.ed by
COftJidcrin. tbe ICti~e slip Iyllem and !he preturtd I1JtIlR pllJIC.. For ci~en i~nt e>ySIII propenieI. t eomtlric flClor$ ~IlIJl ln diIT~nt val_ or yield
slon, each cryw.1 orienuUOlt. Ducri1i.)' Illisotn:l;PY II deImrined by !he balance or above two puJII'ICICl1 and possibly
l~n'''1
and tnclure
I0Il110&11
the I cr.iJI hardenin, nte. .... similar ...aIrsi. can be applied 10 &IWoIropy or dI>o:IilHrillle InnIition ~
O F ADVANCED MATERIALS FO R HIGH
TEMPERATURE APPUCATIONS IV, Melt Processing of Composites SponsoFcll1y TMS Stnu:tul'al MAterials Division Tuesd.ay, P.M. Octoher 22. 1991
Room: 203/213 Cincinnati Convention Center
~ ion Clulinnen: Henry J. Rack, Department of Mechanical Engineering. Clemson University, Riggs Hall, Clemson, South Carolina 29634-0921; E. D. Verin". Jr., Department of Materials Science a nd Engineering, University of Florida, Gainesville, Florida 32611 (1,(1(151 ••• 1
CIIYSTAL GROWMI or CHRONJUN oSlUCON ~ECtIC COKPOSlTES; a p " " 1" K·N. Chine. ".A. SoItl;" . no! " .R. .... k.... Om . ..1 Bloel'" Corpo. 1I/& Roo.arth ..... nev.1opm..,lc...lH. PO 8401 • • ~, NY. 12lD1. Inl.-. m.I&III .... . "; . «Im ..... ;It. rOt ~j l~ loI .. po •• t~ . . .",.. I ~ •• I _ Iluu..,. e. " bo pro p• •od eon..ni... lly by di .... lion.1 ..1idil\<. tiOft of outt
",k_,...,,,,,...
Th. pri ...I ~' .
or tM.
"Y . .... l ~wtlo ~ni
...,.u..,
will>
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46-TMS Fall Meeting .... tito ud Ii.. ilati.~.. Th~ di...nio~.nJ' .. Iiditlod Cr·C r,Si e~lattw .... Ill. Cr .... C",SI ph.... 01 tho ",...,ti<. ..... lialno.,. .... uJ .. ooncorniq: ..... elfHt 01 ooIdiu.... 0( vaftodiu, "" the ...Ioootnw;turo ..,d -.-h&lliW "';11 boo dOI
..........
,_rtj..
(} ,lO p .• . , EDDY CVAAENT MONITORING OF CRYSTAL GROwrn, ~,
J. lCobaylllbi. Asbok B.S., and 1.K.Ticn · The Uni"""ill ofTe.1S II A"sun,
Apllin TX. 781 12, J.P. Wallacc . Caslinl An.lylil COrponliOll, Weyr:rJ Cave, VA. 24486 Ao
Were iRvUli"led. The me" dtvelooed in ~ lelk durin, coo~n, .FIC • upos .......... cstimalCd usin, ' thennoelutic model. AddiIiOOll of up 10 .. 2 wi ... Hr ;ncn:lsinfly p~ rm:tlion of ICIIes ",wn al 1200 0(:. Laser dad umplu alfItaiftin, .. 2 wt 'io Hf n:wMd aImoa IIIIICIICIIu. The impro.ocmem in teak mentioa IS due 10 improved IOUJ)'Ineu in .cllu OIItIUinin, halnia-rit:h poI~.!IIlilt:s possibly vii microaao;Un, initiated by &IIiliOUOPic ~rmal alfI!nCDonolwlWftia. lucrdaddin, ~ a ~ ......,.,nlration l ..... Hr·~h particlel thaI an: ~ofille har";, in Ik IClle II well .. a fine deftdrite IpIIcin, thai mSuccs W _ free palh between pmiclu.
or ..
(.,20 1' •• ') ON niE BENEFITS OF El.£CI'RON BEAM cotD KEARnt REFINING OF FINS CRAm INCONEL 111. T . Dendi, P I. Bnaz, and J .K. Tien, The
Uni¥usity of Tellis 11 AIlSIin, Austin. TX 117 12
It 10 111 been widely observed thai the low cycle {IIiIUe life of nickcl·base $llpenilOYI is I funch of i"c:\uslon COIIIenI. Eecu'(III lIeam Cold Hearil. RerUllD, (EBOIR) iJ IdcvclopinJ mahod rOf n.d!IciD1 delelerious u.;.!uiiollS introdllCfil durinllWldard indumill proc:a$ina of IOpenlloy1 EmpIoycd after prinwy _1w.I- EBOiR achiova n:marbble tlClnlinus by maintaillin, I nIOlteft pool of iUIICBlloJ in I oopper CNCibk.nm.u-s (Of inclusioa. 10 IIink Of float In tile melt. tffeeo\'d1 n:d1iM1 tbrir alfIlUU in the fillll CIJI prodllCl. TypieIIty, the opecific oUk COIIIICDI ill ~ 1 LI "'" be IQIuccd by III order of ""'I'lituck Ihroup EBOiR progcsainl. Willt thia proYUI me!hod to.. obtaininC dw>et "'pua!Ioys. the fulW:OOnli dependmtft btt_ r.;~ characlCrislicl and indllllON have beat invcstipled. ElperimI:nIlJ worton IlteLCF Lite of fine ' n 0018 hu yielded • fuoctionII rdItiorIShip bet-. indu,;o,. siu: MId LO' ~. From thil won:, lOme 01 !be benefill otitic EBCHR process can be npLaiMd. Thll work is the n:sull of ajoinl n:search project b e _ 1M Spcocial Metal. Corporation, Wyman GonIon Company, the Nippoa Minin, Company. and the University ofTeus II Austin.
,il
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' . , 4Q P ••. )
.,.to.. h .. Un h.d Whll. .h... ..tr.,.I •.I .... /lnt .. pol .. h'
0. 1...... 1.... , roo... lol .. f _co lll <
,.10. upo .Ion.,..
~".......
luce... f"lI J .pplloM ""•• 10""'0'01
or .ho _r, ..... <_pi .. phf ... . ..... blll., l"v.l_d, : :!~.:::::!;';"::~~::':':_:'::';:',:'J'..! 'J"'_' 1M. ' .... n
\o.kl~.
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.~;.;;:;.:.:;;::;~:.;••I;_lnld' olloJ' • d" oll 04 knovledle . f 'he • h''''eft ph. . . . ond plo.
p ••• )
NONDESTRUCTIVE EVALUATION FOR METAL_MATRIX COMPOS ITE BILLET MANUFACT URING: R. E. Shnnon and P. K. Li•• . WUlinlbouu SciOllu " Ttehllolol1 Conler, Pitt,bu"h, PA. , I!;U~.~B; ",d W . C. H .... " ... , Jt ., OWA ColDpwiloe SplCiallieo, IDe ., Cho_Ib, CA, 'UlI-OII!.
Nonda ln>
.""It,
(l , 60 p ••• ) tHE EfFECT
or
'ILOCtsSllIC Q!I tHE OXlllt.flOII nw.V IOl Of •
.LLOY: H. P . Brody, I .•. S.o ... a, \l.t. _ h u , £.\1. V.. lnit, Jr .. HSE, Unherolcy of fl orid" Co lnu¥l ll l , r L lULl. ~'b -TI-.l
PROCESSING .NO PROPERTIES OF HICH STREIIGT!l !lICK T£NPEU TUR£ STABLE AWIoIINJllIo4 BASE .LLOYS THROUGH RSP, Sl 80u • R Da.. upll, ll .. ioBoJ Il ..... r<:h L. boraI0l'1{CS I1J Bhopol 462 026{W.P,), INDIA.
Till'
paper pro...,t ""r od¥ ... _enta In producl". hI.h IIId h1ch temporob,lr. stabl. oL"..ul_ but aUoya b, u lrud l", h .. frot... at"",hod polth th e .Iu dJ.lrlbuU... ol dll pouold parttd_ .... d . paci,.. bet ... e .... IheM uoln. Oro.. anAahber'. ,.,.pre.. l... ..here ... . lIdl.. .... r 10 atlrib"ted d~e to .10 . .. 1... en oc.""nt of Ihe for... tlOII ol OlIld, dt brla In .ttad .. f .urf.e_ bool", del"",lut..:!. Ion e"'p*.!cal .... bUOII. hlp bf'tw"", .... a I.... and OJ>f'r.UnC I.,.d h. . be"" _eo:! to • .". ...... 1 d., alldl", _ar .,,,,,hanl.o,,, In th. steady ,tole .011011 101' alumlni.",.UI.,.,., b,. . plal"" , 1I 0y"
.t ....... lh
QUASI-BRITTLE FRACIlJRE II: Dislocation Mechanisms Sportsoud by TMS MLclumiCAI Metallurgy Committu and ASMIMSD Flow and Fraduu Committee Tuesday, P.M. October 22, 1991
Room: 300 CincinNlti Convention Center
Session ChairmDl: W. W. Gerberich, Department of Chemical Engineering and Materia] Science, University of Minnesota, Minneapolis, MN 55455; N. S. Stoloff, Department or Materials Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-3590
n.. hllh _Itlnl poln .....d I"" d.... 1<1 of ... loMn . . k. It • c . ... dido. . . . t • • tl l for • vorl"'Y '" hlBh . "-.pn .. ~," ...q. p'< • • p _ plleotlon.. H.,...~.r, 'hI pocr oddltion .ulluneo of .ioblu. " v.... y lI.lt . 1< . UOI . Alloyln. wUh . I u.. j ... ~. ond tI'ul .... h. . I I I.lfle"n.ly I. p.ond .ho odd,tlcn .oollun.o of .Iobiu," , bu' "'" to th& u.ant practical 'ppllcatlon II yet poulbl". To Invu.II • • a .h" po.. lblllty of op ll.ld •• oxldotlon beh, vlor by otcro.true'u.. 1 _Iflu. l on , .hree p<""oodnl ,"ch_ ... 1~u" ..... . . udid: Teo, ...... 1.. _r. pro"" •• d freo .... noy 01 c ___ .tti.... :q,_1I_TI_lO_AI_60 ./0 by ..c - _I.in., a1 .. ,,0_ .... tlc l evlt.tlon ( DQ. ) • • e d hoot ..... In'. I_pl . . _ro .... Idb" In air a . llOO ' c f .. r "nl l_. h eo I hou r ' 0 :.0 [ I ... II.a .... " __ ICord b7 TCI.. 0.140.100 P ' _ I •
'ho'
tI_. _ro. ..... , .. lyud by X-fly dlf f roc.lon, T!;N:,
5tH , and [('!to,.
OX IDATION BEHAYIOR OF LASER CLAD NiAICtHf ALLOYS: J:...R. User.Aided Materials Procel$ln, Labon.toty. Meeh llllic:11 an11 NiAICrHf alloy. after cy<:~c &lid 1....tI.. """r OX",,","'" to.ir
RihlIIlm. Ind J. Mnumder.
la,lO p ••. )
U""lTCO)
or ATOMlC PROPERrifS O~ C!lACKS BY lIITTIC£ CREEN'S F1J.~CTlO~S: Bobb TbODI9D . Na t\of\O\ !nHltu," d Ston
TMS FaD Meeting---47
"'1'''. '" .. III
In tMo tho htt l u
"."""ttl ..
pru.nt .. oull... r rou .. ' .. 6r1< . pplylns
Cr •• ,,'. f " "" tlon. to 0 "orlny 6 f creek Inchd l", cuc k Itu..... h l"'. dl.lontlon •• h.l .. n. < ..c k How ..... Ion .nd Inter..,t! .. ", vltb bord p.. titl .. 6n .ho oluvo,e ph .... In.ho popo r . v, vlll d hcu... tho _Incat! ..... vIIleb Intufoc. . . ."" C6 tM" cuck pr opo.U.. . lCG •• et .bo dhe ... . lo .. " ill ""' .1v.. n .. Ith .1",,1 . _ 1 0 00 t ho t q .... H ... I_ r.. t" .... con be .....cud ro. ' ......1 • ., Idon.,. . lin .nupt .. Ill ...... de to eont r ... tbo .uul .. .. \tb conti_ oJ>
U""lT£D I
a..£A VAGE STREN011'I OF ru-T1'PE AND UJ' T1'PE IN'JERM£TAWC AUOYS;' .M.lI....l.:1Ig .nd C. l.. fu. M"I.h and Ceramic, Divilioo. 00 Ridge N. I;o"IILabonLtlly. P. O. Sox 2008. Cbk Rid",. TN 37831·61 IS
°R e~~lfCh le(i by 'h~ n ivi$iorr of M. wi.r. Sciences. U.S, Dcputmcnl of Energy. under oonl_ 1 DE ·ACO'-UOR2 1400 ",ilh Marlin Mwn, Encrl)' $ySlems.lnc.
"71oo..........r_.........._...,.._<>f_U.S .a.....-_ _ No.l)8.4CX);S.l4OIW400. doo U. 1. c:r....-.. __ • _-....,..".... ~.
U. s. a.--,.,-.~
. . . eo. '"
P ' )O p .... ) IltfYITI:D) IInc1S or DISLOCAtlo. DISTlUIIIIT IOII ,,"D CIVoCIt V'ELOC ln Of( tJllTT1.. rAACTtIIIZ IN SIIIGL! CJI'f$t~L NIA!. : J I IIlCk . T._Y. Zhln, IDd J . II . 'rauk!. Val a OnlYa nHy . II.. Haven. CT 06tL~0 -21~T a nd ~ . Dforelh. (ion.ral Electri c "'Ire r on &"11"... Cincinnati, ow 4 5315 . IlJIperIH"" to U U n,,,,, tho enect of dlolo. atlon don. lty On tho brlt tl. fr •• t~ .. boh ... lo. or Ol nrl. ery,tll "IAI _ III !>e dl,cu...d . Cont . oll"" dl,trlbutlonl IIf dl,l outlo". "'TO lnt,Oductd loto .1".10 cry.hl , peC1HU by fou' - poIM !>endl .... at davuad t h,.. •• tue . n... . onlt. o f .ult.. q..eM ".nre_nto or r _ tea pe .u~. o t.och. e to ... b..... _I II t>o CODt ra. led _ ltb 0010 pe.to'Hd earlier 00 annealed er,. •• ro . VorJU I ..... In troctu.t toup .......a l ... . aJWI raU"r. l o4e _I ll bo ntlo"dhed I . . . . . . ef tM nlUlvc I.p ltllde. of I h. dhl .... U "" .peel", ud t ba .1 •• or Ih une .... ec wIl!eb tho r l ooo . 1 ... . Jo eJtcefted . I • • .wltloo . 1M fn eto''''ph, _ Ill .... , ,,tor,,"I" _Ith .e.poct to . .eul ..... \t. OD brittle n f racto., "'U la. _ .. tIM! c luvo. , _ . a t failure ~ .. Mtft tOOM to M ...oclued "itb • re la"".I, 0 1000 IlII.UbJo cneil "a l oc lt , . 'M ..... It. ef tbl . , rfort _ Ill .... ,enerallud to "'Uria h .... I C ~ . _ d\Olo ~ .Uon
Mo'in ll"lled Otlyvlqr
SnI>CrUd b, tbo OfUce or lIu.1 Re ....c h .
,.,00
We ...... evried out ,lfriel of ,lOmiItit '; lIl1dlliOlll OIL Ul"aJ'1 at,bolIl 10,000 llomI COlIlaiLLiDl U atomlcail, 1II.&rp (11oCk ,nd lubj!clfJd 10 IlIClUliullllelllern.. The ordered IlOickiomdrie alIO)'I B' NiAi. B2 MRu ..,d A1S Nb",l bu", b
1'lO';• .
The inains.ie d ......et iCrtn&W of ~ imcnn£tIIllc IlIoyI of LI>c cubic W\lC:I\OI'U (82 and U l Typa) an: analyzed 001 LfIc basil 0( ltIeoftric:a.lly cak:1da:cd elaitic tonuanc., she.. f.ult enerpe.. and clea"a,e enercieJ. The ~ c1t1V1oac I\KIit plants 0( 1110 1 for NiAl ond 11001 for FeAt an: pmlja
1 _ .. ,..wW. .. . . - .. ,.".W0004 .... ellbio _"..,., • oD- _
14 , ,0 p ••• 1 DISLOCATION GENERATION AND CRACK PROPAGATrON IN METALS EXAMiNED IN MOLECULAR DYNAMICS SIMULATIONS: P, C aGP' C. S. BeeqIWt. D. Kim ",d J . A. Rib, Calef ill Malmall Sillndliiolo....L IUlitqle 0( Malfriall ~ce, U...ftlil, '" CoDD«IiCIII , SIom, 1;"1" ~U$ .
RECENT DEVELOPMENTS IN THE ANNEAUNG OF SHEET STEELS n, Continuously Annealed Steels: TechnologylProduction Sponsored by TMS Ferrous Mdallurgy Commitlu
Tuesday, P.M. Oclober 22, 1991
Session Chairmen: I. Gupta, Inland Steel Resean:h Labs., 3001 E. Columbus Dr., East Chicago, IN 46312; H. Takechi, Nippon Steel Corporation, 5-10-1 Fuchinobe, . {3,OO p .•• 1 Fi!OUCTION It!AnNOTtCIINOLO(lY O'ST!tI.SH£f.:TS 8Y D!ftECl' FIRE; M hrj"' .. I Kolo. - . ""'"Ul......,I\Jo.12 I. A. II_.,5. U.hi .... M. Shoji . 1'11(1( .... .dopted red ......... Iypo dl"",-li.od ru ...... (or "",nli"'Mu, I nne.linl proceoo 01_1 "'-ta i ..chodi .... CCl.tCenU .. _ Golvoni,l", Linel. A di_,.II
to""
...dud .... ,. .......... _...,j ......,...-.i"ll.yoW..
m Aut.o ...li< ..... trot .rote'" .... ip -......y_ I oIoMt.o te..P"<"'Iun.
NKK tw. IJII>I;.d \he di.-.cL-lired -u.od .. No. 3 CO L in KILHIN _ . N• . 3 CAl.lContin_ A...... linC Li ... I ..... No, 1001. In rtlKUVAflI A work.. ihoHIoy _IIi .., I" ...."...a; ...........raet"'ln' .r hlP .\HI rlleo". otablo .... hip .,....r Ita.al o".ralion. '''''CIP' .. vi .... elo. NK K tw. II.. ,d..dut.o! aPl'lito ...... Ie 3
_lit,
li _
p ... . )
O~ ..lo.d
Elledl 01> Process Zone E~ol_Uon in re-Si ..... yerySl.1I P G MJOb. T. Foeo: .... anc\ w.w. Gen..rieh ~ oK Che",ical r.n,'neerinl and Material, ScieAct. Uni"enity of MiRneIOU. Min_poIi.. MN S54SS
Room: 210 Cincinnati Convention Cenler
"'1 ...... 1,
(~,35
JITO"i
P .•. I
OCV>:100 ....117 0 ' .,.,,~ ST. '" T.... C•• "'.C "0••''',,," • .....","". ",• • CDorTtLnlClUtl ... ~LU'M~ LI~' , M. _ j .... l . Noud • . I.U~. '.SooIU.
!.:...!!n...
s...!'_ ... ,,, '''''... ,,, .... L •• •
in I bod)' 81 devallOd ~pmlrun= will i~ Ihe apputIIIt ' - It~ IO\I&IlM:sI. o¥ ItIe _pie below the vuaition tcmpem..... How
.... ' Hlp . _ ,. ,ur. con«..1 f ... . con. I.. _ 1 OM_ling liu ;1 ..... I<>pOd t .. 1.110 . ...... n. ICC~ ' OCJ of Itrlp '_
et.aron ~lu. paIICfDI, _
....... . , ft . n • • • _ c .. ,,,,, •• r' "Uc • .--rtlo. of ......""... So . ... loU_I .... OM¥ hftcHon. " ..... d<>pOd ... ~ . - '0 ,no e"" .... " ..... 1
IIIw .......... ;" ............. prevjoo.Is iMetipIionl IbII. -1oMia& .. cnt.k
~'*' a1fC( taoe 4evdDpIIIGII of lbe prur;aI _ wiIlIia !tit u..';liao n&ime1 U,,"-' COIIIbiMDoa ot _ _ anUIion cIe:Ioaion mil ~od
WktILify .1Id iaol.re
' " -"It to iQlemlpleM _ of iltlClbility. dlOCOfttin_, .leaYlle eoIellr., utd quan,;laIi~el1
dwacleriK lilt IpItiU IIDd orier>lI:tiOl'l di.lcributionl of d ..... f _ wilhin tilt procell - . For this invcsn,.u... rauIu will be ~ com~ lbe dinributio,u observed for overloaded and non~ plane Slfain ~ I cncb in a poI~ry..wline ,,-"Si alloy. DiJcIlMion. will ""'I!Ide qlilliwive oInefv.tltions of plastic: Ib":lin mcasuremeflll .... ithin clelvcd 1fIln.. and eM impolW'lCe of Iht (~of\he ov«IoId onlhe ~I btA;!vior oftlle(l1Ck.
~Ol(
MIT TlE
,h. . .lto~} . . . ... "11 .. f u.l p h
OF ItOBltE DiSlOCATIONS ] If TlfE MlC lEAHON Of S. 1. ILIndz l,1. M'IIn," M.tt r ;11s 3151. 7500 or ( H5C.HlO£ . Ho lland .
(I"vlit fractu~ IMKleiltion and prOill9il tfo" In duil l· P~iIS' ilnd II_III I' HSLA stHIs ilpp. ilr l to be 111'911, controlled \I, the i nUI.l dhloCiit lon , ubltl'llctur • . The tf(O(.U of ; b1 Piluing of the StCond pllil " isl ilnds. chlngOl of cltlY'~ plin.es f .... ( OOI) to (011). tr, ns verst cr"kl"g. and · ftlltlrlttl_nt ' of 91'1;" boundil l'lu. .... • • pl.lnod In tor"" of r .c.. t .0<1.1 !lUO) of d.niI~ nu, l' iltion by -oIIlle <001> 01sl0CltiOns ~onfl9U ciit ion s In
,nd f[H Db -
('Tr lt •.
..., . _......
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• . Th. co>ev).oHoo .. , op,I_ 1 .... , ' _ r o ' v,. "'J.e.o.y ' 0' . d'.U I"1I , no eh'9,o9 p.>ln , 01 tno I .. , •••• , _ ,.... , • • od
t_. . ..
In. . . . . p . p• • d . J . .......... . . " <0", ••
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1 for
...... 0.''''1 ,no
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' _ .otvr.
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_d. 10 .onfl.-..l .... I ... 10OV -" "
. y odop, l "" , n;. "''' c_uol
fit\( TIllE; Anll,th. P .O. 6o~
serntlOnl of dhloCiitlon
'0Pe
, ••• • """"" •• Il . . ; . 10.0" . _ to 5 .In....
1. ,20 p ••. 1
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.......,.n......
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PRODUCT I ON o r SHE ETS til TH
IIQT~OI P GAI.VANIZEn HIGH STRENGTH SUEI.
lloU'ItOVED
FOI!MABILITY,
1I.l!anea-Es ko la, Rautaruull'kl 13300 lIa .. een linn" . Flnl.nd .
0,..
and Wo rk a.
h.lc§nI
lIa ..... nl l nn"
'lire. ~ype.. of /lCIt-d.tp go. h.. ni . . . a t .al _ wIth ylald .tr.ngths over 300 MP" an. COIIpore d. The s t,el a ar• conv. ntional C~Hn a t •• l _ , g'h the t oe, l elong ati on a tr.,ctur,l C~Hn ateel ia r.l,tlvely O<:>od . thl l I t . el t y p. lu ff • • • frooro qu.nc~
48--TMS Fall Meeting .. glng end discontinuou" yI11ldlng. Du,,1 ph"" ... steel s lOre ctulracterlz ... d by thair low y i.l d s trer>gth in COIIPilrl"Dn to t en,,11. . .t .... ng th , high 'fOr k hardening rat. In th• •arly .tag• • of plastic d ... for m"tion, "nd good ductility during fonoing. Raphosphori'l:ad " t .... l . "".rage
(2,OO p . .. . )
SOLID STATE AMORPHIZAnoN OF lNTl!RMf:fAU.JC COMPOUNDS: ~
The proces.sa and meclwtiMm of solid ~ ....."".,i. .ioII of inlel'ttlCQl lie compounda by h)'dro&cnalion will k TeYie'll<'ed. The u-maallic ~ with CIS, U2 and 82 _ _ "';[1 be priaIIriIy 00VlnId. (l:~ '
(l, lO p • • . )
liuJe aepIM encrJ)' or maina; or w coostiruenu combined widr raM cliff'usion of one specieI) can be lUliUld at mtQi-~~ inlftfaces. n..si ia; die: TT1DIM iITIpQIQIII el\unpk I:IeaIlSe or iu widRpread ute in rumin, a silicide COI1IIa In intcCftlCd cin::uiI TCdtJlOlosy. We hi"" eII"
~ontin"o,," anne.,ling line b.. ilt vith teChnological llOw" v. r .... I'IOt . .. [tl-
a ne ..
(3 , )0 p •• • )
FORM ATIO N OF A MORPf.lO I)S). . ,LOYS BY SOLID STATE REACTIONS . B.M. Cletrl<'n. and T. HufQ&lI~I, Deputment of Materiab Si""n"" and E~«i neerins, St.n ford Un;"".-.ily, Stanford, CA 94~ ·
P ,55 1'." . )
IIITK II.
))[YELOPMENT OF IlAHUFACTURING PROCESS FOR TIN IU ~1. B!.An P!.AUS "'~L
TDIPEI
bl~ .ln .. o ,
"'"'
DESICHIITlO~S BY COIfTINOOUS AIINE ... Lnc: T. SoHne . T. hto ..... To u l<.o, C. hjln ••• • Y.
The formation of amorphous alloy. by aolid . tat in thin film diffusion ooupl.,. hM .. a Cla';al component th~ nucleation of the disOrd.,eceu"i,,!, having b••", ob&orved in many . y. tetrll including "lady mdal·lale t",.... ilion metal ..,d metal-metalloid ' )'$' lems . Th~ cxl eulh.tr..,..ilion mdal ' YIt
Sh!.oy .... , . nd I ..... . ho, lawu.kl S t ul Co .,.outlon, 1 h " ... kl_cbo. Chih 160. J .p.n
a
Cont
..
~
~l:~:::~ ~:::':",::OOft t TIlin.). Iud. ".null",
~
Ir.o.ir.ion
t
black l OT:..49) by t op Ou r nellpIa " 0t .{M . 4 CAL ttb th. of l000t0f.ln o• •
U.tns .hi ....... CAL&qulpp. . rod d ..Nb_ il!!;~~;:::lj:'~it!;IIOdr.o . Tbh CAL Is lth ..,dlU.d dou blo .. •• •• .. ch"lc.l th~
~ bav ~
bl ioh .~
con ~"lon .
. 11 t.,.po< Brad .. ,
10,
(4,20 p .... l
HARDNESS
~
(~ ,
RECRYSTALLI%ATION aEaAVIOR 01' CONTINUOUSLY ~ang.
544-0'0 Korea
Al t hOU'lh hl'llIly ductIle aheet a teel • .ad. by contln~ou. annealln'l have been ezt"n.lvely .. sed f or a~to80tl ve panel •• contln.. ou. annealln'l facilltie. have not been competitive ..lth beteh annaal i n9 i n prod .. cing sof t-t_pc r bl.ackplil.t •• With contin~o ... annea Un'l , hi'lher ann ••li n'l t.aperature • • nd ove r.v in
to,_
I" _ , '0 , _ , , produol
_~I
ond
0'_' """.'... 1.....
I'
P .... )
DRlVING·FORCE DEPENDENCE OF AMORPHJZATION REACOON RA TF.5:' W S I Boyer and M. Atur.1On. Depronmenl 01 Nuclear Encineerin" The University of Michigan. AM .... bor, MI4il09·2104.
ANNEALED SOI"t-TJ!:IU'ER BLACII:-pLATE CONTAINING Zr OR Nb, .J.B. K.. ak, J.B. Chung. 5.11:. Chan'l. Rift. 69' Ilwaho-
DOn'l. 0009 K..an'l
~ . •. )
SOLlD·STATE AMORPHrzATION AT METAL-SEMICONDUCTOR INTERFACES ; Bohen Sigslail De~nt or MaICrill. 5ciellCe and Ertgincerina;, SlInfcrd University, Stanfonl, CA !MJOS
M£TALWRG~ or IIOOGClVIJIS' NEW CA LINE l'OlI TIN PLATE , Th . H. Boogendoorn , A.J . v.n den Booqen. Booqoven" IJ.ulden, Po"tb .. " 10.000, 1970 CA IJ"ulden, Th. Nether1&nd.
new
and T . MII~I!IOIO. IQllil~l~ for MalUillll Ru ean:lt. Tohok:u
Ullivcnity, Sendai 980. JAPAN
The powth r'lIlt$ of unorphotts N",He].., in t:OfttaGt widr Ihc Hf·ricb ctysuUinc iClmin.aJ 3Qlution hive: been ~ by Rutherf<.Zd b.:bcollCrinl sptttrom:!I)'. The corresponding imentiff1l$ion coeffICients wa.: found to nry by ~ than two onIers of TTlIpirude lS I fWICtion 01 !he composition, c. Tho common·
to n",nr. <:Omp
at which
the un
widr lhe tenninIJ He·rich solution WI$ Mttnnined diresdy and found 10 tIiff... subwnlially from values ClltrapO\alCd from Rulhcrfcrd backscanerina; data. Both resu)ts ...., con"""nl with • ..",Uneu COIIIpO)Oition profile in the demtntal di ffuslon-COUllie experiment Resull. of measurements p::rformed with both l<7nIillOl solunon. wiU be prcsental and shown 10 provide a )lCI\'m'ful method of inw:.tiplin,phuc equilibria and ruction
kinetic~
l1Iewmposition depcndcr>ee
of ihe (tiffunOll codflCienlS wiI) k disc:usscd in 1Cnm 01 relaxalion of me amorpbouJ phl>C.
• Supported by !he Natiortol Sci~ Fnundation, grant No. DMR-8820265. (4 ,4 5 p ••. )
Dh~ussto~
Period
ton. l _
~\::\::;'~~~'~"":" I,:":~~f' c~ ~.n '!fd.r!:""~....C.:. . :'\!t:-~,Ir.:"!;
' "1 ..... t"", .f ....11 ............ 1 II.... 'M ... , .... _ ' _I .,.., " -1.-. c"",,..,1 '1,1_ of 'hl, ... It ,t"OV ldll , dog". 01 . 'por l... "1 <"""0 1 ,nd fl .. i~lIitl ""11'1,10' to otho, l.borolw1 .... t 1..,1\1\,.. .
'''''''''9
TM ... ~ Of IhlO _ II 10 p...,. ''''' , . . .bllltl.. , 0<1 _roll"" Of 1M ,i... l ..or.
1<_,.. .
_,.1 """"'pl ion or lho "".1...
11!)~~'=i:":~ ;lr:wnoi~ :...~t!~
111 tit pro_tad , r-IO\I
... ""ti."" '""
10' I/N'tIr. .
the
SOLID STATE AMORPHIZING TRANSFORMATIONS n Sponsored by TMS Physical Mdtlilurgy CommiJIee Tuesday, P.M. October 22, 1991
Room: 215 Cindnt\illii Convention Center
StSsion Chairman: M. Meshii, Dept:. of Materials Science and Engineering. Northwestern University, Evanston, IL 60208
STRUCTURE AND PROPERTIES OF METAL-CERAMIC INTERFACES IV Sponsored by TMS Slruct.u.raJ Materi41s CommiUee Tuesday, P.M. October 22,. 1991
Room: 208
Cincinnati Convention Center
Session ChDirmen: D, S. Grummon, Dept. of Metallurgy, Mechanics and Materials Science, Michigan State University, East Lansing. MI 48824-1226; K. N . Subramanian, Department of Metallurgy, Mechanics and Materials Science, Michigan State University. East Lansing. MI 48824-1226
TMS Fan M eeting--49
(211)0 5I.e.>
fill', Of\ tile supercondue t ing p.-opertt., wi ll be in'nstlgned 1ft deuH. TM liSe of noyel /lNlCeulng methods to /I~fe~nti_ Ill,. tutu~ fl1l11 ei ther " Ith .. · uh or ,·.. ls perwndicllllr to t/t@ ,lJbst rite will 11$0 be dhcnu
nU N fiLII PROCESS ING AIID THE I1£TAL · ([IWIIC INTERfACE: D. A. S.HII, ISH T. J. Watwn ~Sf. r,h Ctnur, P.O. 80.218. fc r kt_ Relghts, U lQ§98. ICecll.ce,,.fc In terfues .. n i.,oorUl'lt III .. r.* of conte.to which tH.nds f .... ,d.. lICed ,_sHel to I'o'chgl"9 tKMOlogy fo, tile cue Of t hlll fn .. cIfposltiOfl .. nd procull..g. The 110'1'110 1~, alt1'"Ostruc tun. crys U H og"""lc nli t tOt>sllt ps ,lid p.-operttes offer I Vil~.ble Insight to the hlldultntll IftteriCtloRs I t IIIt t. l-cera.le Interfaces. Thts point of view "Ill b. dev.loped by re fenfICe to obse .... uions of t he charlctedsttcs of me tall tc deposit, on ce,ptc substrates .
HONORARY DINNER Tribute to
PROFESSOR REDVERS N. PARKINS
(2,:30 p . •• ) ION BEA M MODIFICATiON OF MET AL-CER A M IC INTERFACES .
Tuesday, October 22, 1991 Cocktail Reception· 7:00 P.M. Dinner ~ 7:30 P.M. Clarion Hotel
J. E.E. a.pllll, IBM Almllden Run", " Clntl r, 650 H•• ...,. Rd ., S... Jo ... CA 95120.
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lI. riet,. 01 ..... y. In ..... 'ch Ion boIIm mldng.nd , url..,. I.ye, tre.lment """ be used 10 tRltor .nd enhnce 11.. ,tn.octur. 01 met.'-
Room: Bronze Ballroom
T".
(J,oo
WEDNESDAY AM
P .I.)
ADHESION ENHANCEMENT Of IRON FILMS TO SAPPHIRE BY IMPl.ANTATlON OF (;(. Ni, OR fl.· J , E, PtwwI·· ...... an::! CerMnic5 DMtIon, o.k Ridge ~ Lttboratory, P.O. Box 2008. Oak Ridge. TN 37831-6118; C. J. Mc:H.guet: L J. FIorrwIatt. and J. J. W. . ••
The .tied 01 the ~ 01 dfIer«1t Ion ttpeeies 10 the iI'IIertaee 01 ron IiImt on NPPIWI ~ has been~. The darr\8ge profiles __ I the _ !of each lPICiIs. ThI exiSIenot 01 a IriKecllayer was .xamined umg RBS and EOl(, The R
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Wednesd.1y, A.M.
Room: 201 Cinci nnati Convention Center
October 23, 1991
~icll CMinrutn: J, L. Sm ith, Los Alamos National Laboratory, ET-ERDC MS K163, Los Alamos, NM 87545 11,)0 •••• J I1'lITI!I:SlJ or ~ITIII': 1fI~" ralPOAT\IU ttrnaooaDOeTOIU, ~ QuI, ~. L. Meng ol'od P. II. 110<, n~.. C.nUr ( 0< hporcond"cthltr .0.1 IIO'po."c...nt of 'hydc. at tho ~nh-'ulty
of """.ton. n
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11Z04-5506
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(l:30 p .• • )
Mb"TAL-CEaAMIC INTEJtFAClAl. fRACTUR..!! RESISTANCE USING
nul NANOINDENTAnON T1!CHNI~ ; S. VenkawanwI and w.w Gcr!xzj<;h • ~ 01. (k~ Enpnoerin, IIId Mlte,bll SeicllOe aod D.L Ko/Ilnodl, Dc~nl 01. 0e0f01Y aod Gcoph)'lict. Univcra!y 01. MimIeJoca. MiMetpIIis MN' ~,. o.~ 01. .., .thcaoo> 0I.1bi11 rlltN III..--Is Wftmdy ~I 10 C\IITClIl ~ A DII'!Iber of ""....iq_ 10 _ _ _ .thesiorI propmia: an. .vailable.,!be _ t:aaIOmII lilt ~ leSt. However,
beina:
IlIc:n: has beu 110 quamill.lift _ _ 01. !he intcrfloCi.u fracNre 1OU.p.ncs., urin, dIl, U1dw'l!le, patic:uIarIy for ""'J !bin filma. A modtl is prauolCd for dccumi!lin, !he work 01. odbc, ion and lh~fcR !be inlUfac:,a1 fraclUn! -iMaa· ThU model i. Cwo fold , prul.DUn, III duck pllenomc...,;.,pcll tpprOICh and an daItioe-pI$ic I'ini~ de:mtm 1fIIWOI'"h. UAn, tIII: Nlnaindl:nlZr ill a ~tch mode, this modd hal been <:On'tl&Iod with uperiml:nll.l dill. foe. Pt/NiO 'yJIttD. Hc.n:, !be lUMen", is dOO> oriented lin, t. ayNl NiQ and che n1111 Is JpWllcr dcposited miCfOCl"}'llallinc Pt. TM luicabi lity of the NlIIOindoncer for !be dclmllin&!ioa of ~ illtafac:ill ~ 01. vuiouI bj. maceriIJ ilHmlKei ill disawcd.
(4,00 p.a.) Nl tIlOSTJW(tURE · PROPERT'I CORRELATICiNSHIPS III lASU. OEI'OSIT£O SlJ'{RCOIJWtTlIIG nUN fiLMS: iI.ojiw I . Sil'l!lh , ()epuble~t of IIHerhh Selene. Ind £nglneert..g. tJiil"'f$lt,. of Florida, (o'lfttsYllIe . FL 32611.
The .Icrostrvct~re of IIigh-T lutr ~posltcd YlLi,Cu 10 super _ 1propertiu cO!"OCeISing vHlabln e!DPlc)'ed tQ tl l10 r the .. lcI'OHTuctUrl! Of the supercondllCting thin fl1 .s for specific prop'Ttlll, ne effect of the .,I cres tructure, fil .subs trate Interlttlons , nature of eoit,n l,1 t .. tu .... d growth Ind cr)'S t l nt .... 'lIIlHly of the
In"
CONDUeroRS FROM HIGH Tc CERAMIC MATERIALS: llIEORY AND FABRICATION I: Rare Earth Bued Systems Sponsored by TMS Shaping and Forming Committ«
. . nul pl< ..... t. . . . tfeet l"9 tho qUI" q<~ h I n n.zCusC1 ... 109 tho .... 1.-....... 01>4 t()ntinuo ... U ch nC'l"" ha •• _ n I da .tlft ... and lnv. . Ugn.... _" fo.."" to p.,*>u quln...,rowth, to Uoprovo
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<.htorcod b y the fino .Uve. wi . . . ,nd cooopected b y u.ll>O HIP teChnl"" • • n.. diU 0f1 .-uy, el.ctrOf1 . t«ootopy ......... n,' ty "'<0 = Il.ct ed for . _ 1 . . which ......... ln f og ....... 1'''- "".eu Of 1>g .. i.c. ad4 it iOft On
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COI'iTlNOOUS fMR IC...TIOII OF HIGoH T[t1l'[AATUR( SUI'[RCO"OVCTOR CQAf[O /l£T ... L AND JtJ\.TIFlLNI£NTARY I/lR[: L.O, Woolf , Piotf;c SupeTCondllCtor s Division, Gentril l Atcnlcs, SI n Otego , CA 921S6
f1eu
Long lupe rcondllCtOT fibers hUt IHI:tn COM lnuou s ly pr oduced by e l "t1'"OphDret lc.ll,. depositing 1I.[!Iio2Cu3<>7.x (lOWder onto a nic kel illloy Jub,t rate fiber and si ntlrlng, tlten elKtr'cphoretic,l1y dePO$iting sHwe r and sl nterlng, After collectIng the coated fiber
SO-TMS Fall Meeting on. like-up spoIlI. the Intil"t s pool Is bHCh-0"1genHed to fo ..
thl 90 K superconductln~ phUf . Twelve ' t~rl Ire then contlnuously u"s~l'" .114 solde~d Into , copper clllnnel to fo .. tM f lnil 1JU1tIUI.llefIt~ ry hl'1h ter!\ll!rnu~ superconductor wire. $.upen:ond..ctlng rll>ors over 1000 .. 1<1"'l 1M IItIltifl1l .... ntlr' wlr. o•• r 400 .. ters 10<>9 hi •• bHR produced, hlues for Jc (17K , H-O) 'rOIl looo-rooo A/c~ ..... tlr J e (SOK,
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DEFORMATION MECHANISMS TMS Ge1t.tral Abstract Session
m
Room: 206 Cincinnati Convention Center
Wednesday, A.M. October 23, 1991
Session Chairtl1ll1t: Donald R. Lesuer, Lawrence Uvermore National Laboratory, 1.-342, Uvermore, CA 945S0
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EFFECT OF Y2BeC..o, AOOmoNS ON 111£ NAGNETlC PROPERTIES : P. J. Mc(jw, W. H.
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CALCULATION OF FLOW CURVES nOM CONSTITUnVE EQUATIONS FOR VANAOIUM HSLA STE£LS. MtQu~ MItCh. ~ .. CoI'\cord la Unl • ., 101",,_1, CINIM HJiGM8,on Cingau, "thl!Tl1. Tech., Unly . of NOIII Sad, 21000, Yl.Igodavi • . ~nr.1 V-m lO'Olllloyed "HI. weT. deformed iaothem1.a11y b{ compression or IOftioI'Iln iht range oI87s.lIOO-C and 1()-5 to JO.- • The tmlp8.tIlre and I tr.in f'll! oepend~ 01 the peal< Itress op a re givm by I'" $lllh-Arrltc!nlus tql.Llltion. The puk Itrain ~ 15, liflftl fundlOn 01 0,. The activation ~ for the V~tecr, are
only .lighlly hlghe1 than for
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C1t«I POept when Nb or
Mo wen llilo .dded ausing 1 COItIider.bIe rile. utilized 10 calc:ulace the' flow ~ II 01 the fonoI:
~ equ~tIon
ola..-[Wr.Jap (1 ·t/~"(The com!anc c for "(/I ilLo\ If rower k:c- riK In 0,. for lOnion than fot compr~i
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AlISYItIETRIC FORGING OF tlTHllII FLOORIO£ AT ( OO·C. keith L. Inc! K. J. ao.-on, Purdue Unlversit,. West ltf.yeUe , IN
fluorl4e de_, lop$ lubltintl.1 no Bnd 100 fiber te~turt e(lOllpon.nu frooo ... isJ"'Qt ric fO'1lln9 at 400· C. The texture dtv.lopaent llUll be doonl"" Wd b! the secondary sIll' sy~ t_ (l0D) <01 1' tncl !l l) <011> sinc • • 1 gnl n rolltlolls thn would contribute to t.xture by t~. pri .. ry Slip s,s t .... (1I0) <110>, Should be counteractlHi by s}Vl!lttr1c rou t ions. A self-cons istent rood,l for tutu ... prediction. of t~ e type dtytloped bll1tnk.t ,1.1> . "Ill be c~.rtd "lth the ... perlNnUI resulU. Otfo .... tlon resijlts.nd IlIIlr rellotionship to aocItl c.I"'htlo~1 will w, dhcuulHi. PeI1(r1st.llj~. IIt~I ....
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KAGNtTlC.BEHAYIOII 1II0 CRITICAL CURIIFJITS OF HP!I(; fROClSSl.D nco ~ , II. Kurelt. .!, H. hjhoto, W. loahh.b &lid S.Ta"..k.o. S"pncoMwc t iYl\7 roh Lobonte'7, IMIXl , 1_10..1). Shinene •• , loto-IN, TokJ'o 1 )~ J.poon
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I\qnotlc pr"poortl. . alld .r1t1c.,1 cwrrant. ot till IIolt_l'<»oI.~._ IIdt-G ...... t11 \1'''''' ) pr"".. I'" tlloo~}Ox ........ tllCll,"" tor uainc • YSI! , • SQUIO "en-totoll.er , an At IUte'pte.. l.er 0J04 • t ...... po.t .rltl",1 e ...... nt ........... lIt .,at... Direct cpU"'l 1I1ch eontr.n Iio""U. FlUl. ( NI COM) 0100 ...... \100 ..... ra llaO "" ....11<1. Out. Till.. . . ...11.1 .uppo r t till hct t hat tllo Mo_ awp...c_uetin, t211oC..o~ poorUd. . .""tribootl 1.0 nwo. plnnl",. Tho . . .p1.. lI"rt . . .t......, pe .... ..,...ta ba",ual of u... lor" plnnt.., rorell ob\llM<\ I" till bulk .uperc_w:l.Qra. Sea ... plll ,ho .bow • brood tr.n.olt1on ond. &II anc..lowo ... _ pe.k 10' AC ...... ptlbllltl ........... Thh vtll be "iacual,"" I II nLoUOII 1.0 ..... kill,b ot dl t.eta. l put or t11la york wa IPppo.t.Id by J!OO unci... Cu.~ ~ ot the R , 0 or lIoatG t..,h""lol1 t or tutu .. h\dultr l . . . · P...lnt ..sdro.. , h ... MIIi Still eo ... . ' . lo......t1 ... ~e, Chlba 2110 Jlpe~
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1Mi-8619186. (9 ,)0 •• • . )
UFECT OF PP.£CIPI1'A'rIOII AHtI USIDUAL SOLlIl'E O!I t!li:CIWI'ICAL AIID ELECTRICAL P~P£RTI£S or A CV-III-P ALLOY, Jj,lD1i flin t., IIippoll Mining Co. ,Ltd . 3_lturaai. Salouk.w', Xo&a, Xanag • • • 253_01, Japan, Morri. B. F ine, Depaetaant o f Mlt.elall Sci.nc. , Engin. .ring, Robert MCCora1ck School ot Engin"ring , Appl1t1d 5<:1.nc", IIoethwest.. rn Un ivar.ity, Ev.nlton, IL 60208 TIl. cOl1lbi~. tion of t il. Gibb.-Tt.oe.on equation and Mordll.i.'. r u 11 gill1ng " corell"tion between till elec t rical r •• ilti.. ity .nd p .. ecipitate particle r adiul g ..... a good agt _ _ nt betw. . n theoretical cAlculationl .nd .xperi_nt"l ra.ulU ot Cu - 0.74"''''1-0.14vt\P .lloy. Through thil cooot>ination, th. Int.rt. c l a 1 _norgy bat. . . n preclpit.te and Cu al loy aateix ••• c a lcul.ted Dy r.l.tlng particl. 'lrl to r •• i lt lvity. £ ,t.01 1.111ng " llIOd.l tor coenllting thl yhld .tr•• , to r.,iativity "a l .110 don. by cOlllbining tha Orowan equat i o n .1th th_ 010lo._Tho ... on .,quatton .nd Hordh .. ! . ' , rule to optil11r1l . trength and .loot(1ca1 conductivity.
TMS Fall Meeting---51 (9,50 ...... )
J._.
A 01 ClIft&I Ct.lllDllftllll 11 1DI. tcr-I. IIIIU ~ 1 .......', I . lllerl" . T. haoIIo' . . 1.1\011'. I. PI. te. II., ~ • I I ... J:od WI>.. 11"'011 S~I CorP.. ' -II.... 221. 1 . l lcroc ... ractoo .lutiOll SeI.... IA.. 11 _ S~l ~. Inoautl 222 . J_. 3,'.0 I.Moa-i!, " _ S~I Corp.• s-pon..... 2251, oJ-.
HIGH STRAm RATE BEHAVIOR OF REFRACTORY METALS &: ALLOYS I Sponsored by TMS Refradory Metals Committee
11_ S~ l eor,.o •• Uon .... """lCtur.
Wedne8day, A.M. October 23, 1991
hi'"
1IDd. tcr--lio
Room: 208
Cincinnati Convention Center
Session ChlUrmen: Anthony Hick1, Cabot Corporation, County Line Road , Boyertown, PA 19512; Riad Asfahani, USS Tech. Center, 4000 Tech . Center Drive, Monroeville, PA 15146
00;10 .. ,111, )
MICROSTRUcru RAl. CHANGE AND ITS INFLUENCE ON STR ESS· STRAIN BEl-IA VIOR OF TWO SUPERPLASTlC MATERIALS: P R l.tslICl, C. K. Syn, K. 1... CId ~ 1l and S. C. Mana:, uwn::1'ICe Uvcrmo'c National UbonIOJy. U~ CA 94.BO. Thc influence of microsl1l1CiUnl evoluliOfl .... SIUU'lttain behavior durin, luperplutk flow ILu been Sludied for a quasi·sinllc phlse met&l (COI'OIIZC 63&) and • mictodyplt:~ _Ill (ullrlhi,h'cubon Sled· UHCS). Qur ~11KI'u .... ~e inclu.dc:d the inn""",,e of both vain powtb and cavitation. The: ,rain growth ~n UHCS d i,. linear f1lllCtion of SUlIin and a power Law fllncuOll of slni n nte. The: femte pain growth nte isc:onttolled by the ,atC of grain booIIdary slielin,. For bod! mlle.ri&ls Ihe SIJUS' IU1'" fe$pon5e '?' ~Ilculated by combininl &II empirical vain vowth law with limple conlmuu~.c equltions for the: in!CmlCd;"te and high wain rate ~Iioru (Ulion. 2 and )). ~I' matc,ial model provided I ,euonlble upresentaUOfl of harde n,n, dunn, superpl&l;tlc defDl'ml1iorl. ' wort pcrlonntd ....... tllo ~ • • or tllo U. S. Dtpartnlcft' 0/ EMIl)' by tllo 1..>...",_
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110,30 a .... 1 CO.'o' PARATlVE CREEP PROPERTIES OF PUR E TUl'GSTEl' FABRICATED BY ARC-MEl.TING AND POWDER METALl.URGY : -!2!!lt O . Pa,k . KW'''1l S. Shin, Du n L.bcobson. Otpanmenl orChemi",I. BiD ~11d .\':ltcn~b !'n~;I>«rin~, Ariron:, UniverSity. Tempe. AZ ~5287 T,,"~,'~"
(a, ~~ ... .. . ] METHODOLOGY FOR PRODUCING WA RHEAD UNERS FROM TANTAl.UM POWDER METAl.; Co A. MjclWuk, Cabot CorporatiOfl . County Line Road, Bo~n, PA; R. I. AJfahani, USX Corporation, Monroeville, PA
lun~""n fabriC3tM hy ~n;-·meltin~.nd powder lIICIallurgy ba~e t..en ,"
usc: of hi&" purity ~m..lum powde7 IS a viable fccdJlOCk ~crial for warllead liner appIiationJ is pmeqlcod. Tanlllum llOCk used to fabricate C>.plosi~ly formed penctrator (EFP) liners wu prod".;:ed by lWO metal powder aJQsoIidatlon IlICIhods: reducrioo ,inte, then cold roll; and ClIII'IIdc and fOfte. The role of o'nell level. in respect to quasi1Wic and dynuok mc:dw1k:a1 bebvlor .... well as te$I finn, r=rlls, will be diSC\lSSc:d _
S,.,C
b""" :llloy, b~~c gle~t ""tential for fUI"'" .~t ... 'e....,~"i.l pow~r w,"cm, . fo, ,,,.,h 'pplic3!i"".,he creep t..h."io:r of pure lunp.. n., well;l' ';' "~Slell!>ax "Ikly. ,huuld t.. wdl undr: ... tood. The creep propcrtic.of p"",
~
(9 ,20 a. ,. .1
Qlaracte rization 01' nnwUI' Por v... ioU!l P'dnufacturino;l P'OOI!!l9I!S, ~. T. OIatterjee, and L. Ting, ~, p;.mtinny, IU, B7896 'n1e tligh density and qoo:l fomobility of hntal ... Is a ...jor factor "otIid! Ma praooted its develo"",nt for ",,,head devi.,.s_ ~......"..nt for s ud! an attsrpt has bee n iI • ..." alllCl fr.-. other attracti,", properties cL tantal .... , e,g., It' . hicjl .... ltino;l point aIId cherrtant, In t11e present 8t,q., a broad description i a given of the tantal .... pr<:ducts ottalnecl frQl> different ..ano1actur1nq ~ inclucli.ng, powder ""Wlur'll', cold forging and high e ner'lf rate tOD'ing (IERrI processes . An analyds h Iroade COOOI!ming the oontrollfnq factou in achieving I:heso! pcoiIOJcts . 1tre dloor;s s<.K:b .... t.extuno, the ..1crostruct.un.l features and othe r d!!t.1oU s Ue dlscusged. An attefltll: Is ... d!! to ""asure the effects of these ntetlal s p".a.~ters
[9, 35 .. ... . 1 tHE DTICJS IJF OOlD-n.c.:wrNC CtI TANTAU.tI MATER[AL ~!'!!';'O'_
, n.., c.olil- n"""ng pro<;"ss has PI:(JWIl to be an l1lf1trunental tool for the edl3ncaaent of metallut#Cl11 and ~Ic.ol properties in t.."tlll ... m3t"ri" h. n.r, the~nical ~ ts ..t.lch cons titute cold-Howing lire e ffective in the .... f i _ t of grain size , te~ture evI:liuUon, am high R·vlI! lII! dev
52- TMS Fall Meeting ptttln evenly t~t tM ~lKe. " ... jor 11_ _ mire ICIDI! !..In"'l.... ""Uead..... h.. been the _t.U"", In _ tutd pn>pntln frao the vedo:r -.r'Cq. J.ault. ~ Wi0:.1.-;1 thoot u.. cold- fl ow procu. virt .... lly eiwNlu variati .... in lhR u-l'fIUlve6 twota1.... It 11 UpKU,d U>.t thtH em.nced pr'OpIt'rt.l.. _1<1 be hia/lly .odwrttJII'"""" """"' bopt_ted In appUc.a.lonto ..heR tho _urlal is -..bj..,Ud to hi#> uh;)'IIIII!tr ic .tretn rille lo..tirc cordltions ..,tire dynIn1e ot..etIUty i.oIpernl"". nO,20 •.•• )
EfFECtS or lCLU~G s(;"I'.llIlLE AlII) AIIIIULl~G ON tilE MICM STlAlM lAT! IEIlAYIOI or TIoIITA\.UII. kO l t"" J. " ...... klo, AtrojU !l.~t .onlc 010101on, T-V . D-}HI. '.0 ..... 196 • ....... , CA 9\702-0296. J .... P. KoU .. , .....0' .. !loctro~lc syn... Otylllon. T-Y. D-l.0l, P.O ..... 196, ....... , Co< 9110Z...(lt96.
"n •••
A .... h of , .... roUt . . ..,I>odd .. with t~u • • ,p.. of ~Ut uoat_ ....... 0.111 .. 4 to It"", 'hi .rtoUI o f .0111., .chd.... ond hut nut... , on th _du.tul pro,uU.. at . . . . . . . .
to"''''' .....
U O,4~
•.•. )
AN INVESTIOAn ON ON THE EFFECT Of CRYSTALLOGRAPHIC TEXTU IU! ON THE MECHANICAL BEHA VIOR OF TANTALUM; C. A. MichIoiullo C&bo(CoJpontion, County l.i~RoId, Boyenown, PA; M. ~. US Army. AROOC. PiwiMy. HI; M. Hespos. US Afmy, AROEC. Picatinny, NJ; R. I. AsfabW, USX Cotpontion, Monroeville, PA Tantllum VAll
pale
IIOCk _
produoe6
b1 means or Idealve
~ procc:s!I'!$ 10 )idd ampIeI willi ~ dqna of ~~ ~~~dlClleatlw~
or dif'lilled \lie ( 1I1) type Il:J.tu!e wIPcII it prcdoIninue in strai&JIt rolled WlWUIII. &mpks wen: dlaniClerilllld ill cemt5 of microItrucIW'e. IIIcI quuiswic and d)1>llllK; ImSilc propaties. The inn_ of 1I:lI11I!e padialls 011 \be 6ef0l'1'llW0ll bel\l.vior of 1 panlc\IIar II/IIple II CIIntnlly under ~. UI ' IO •. • . ) TIll
u-ncn
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p.
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.hUl doolpMo, .1 UIU
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COrporaUon,
nOI ,,",cb Str_.,
~~~~~~~~'!'~~~~~~~"~'i':':': :'i'~"!'i!"'! Uhn .tt.... o f
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on
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of ."botropy
to
OP HUVT METAL U, LIrollS, t.C. ""dnL Syn_ • • 201 ....... 11 St., 11 /1, 1115,
~i •• i~,.;., K.I. 01117.
an orbitol forge technique tor tile prod .. ction linen h . . been 51\ovn to be vety ...""" .. ful.
or •
d.H... technique fot fO",l"') ".IVY _tol Hnln h dhC:lllud. The orbital (0<9In9 h """"'" to yl.1., .. bhl\lr. .. lt~ ;lxlsyraotri" proponl . . about the "entu.1 a"h. The pouibl11ty of ,,",lne.rl nll tho aate.;:iI.l In tho .. _"hl port1 .. 1 10n9 tile utn. Thh paper .. 100 .ddrene. tho d .. lbrlU • • • nd tion.Uy, I cooopathon o f Ict .. d Erp CNUlU . ,,,de! ... nut .."lu,·V
._ I
-''lnU ic .. nt .,iffra nc. IMIt... . n tho t _ _ t . . . . l.·.
nnlt1al 11 ....
""''l"
1101<1 con.tont.! .h'9 fo .... tloo.
KIRKENDALL EFFEcr SYMPOSIUM ON INTERDIFFUSIQN AND PHENOMENA THAT DEPEND ON NET VACANCY FLOWS m, Defects in Diffusion Sponsored by the ASM·MSD A.tomic Transpcrl Committa Wednesday, A.M. Odober 23, 1991
Room: 207 Cincinnati Convention Center
Session Chaimum: Carol Handwerker, National Institute of Standards and Technology, Gaithersbmg, MD 20899 (, ,30 •••. )
CONnRM ATION OF A GRA IN BOUNDA RY KIRKENDALL EFFECT IN CI/b A 5, Kin l , Deputmeat or )btsi&ll Scieace .... d Eqi mel!:rilll, Stai~ O.i.enIlJ of New York, StOIIJ Brook. NY 11tH-m:i . All OpeD ClUeltio. kI. tome tiIM. ba beea. 'WK1.iIet yacuciet CIJI ai5t .. diKret.e dde(tl withill , raill boulldarin, whue tbey wo.Jd be "defecu of derecu" o. ~-clelecu. A IIl1mber ofTEM obIert,iionJ will be presented whie~ c:ollfirm thlt mef..l>i""lIl '&alltJ C:01\Cellt fiti0lU CUI aili ;11 , .aill bo","d~n, &lid t hit lupenalu.at lou call be induced and retWI iu ihe pfftipi taiiOft of dU11en i ll eertlill tuef. Mott Iipl lieutlJ, il w ;U be lbow. t bat ,rai ll bClIlI!duy di lfllJiOll rn",\11 ill 'acanCJ p.oouctiOll, c:o.respoAdilll 'D' ~aill bou. dar)' Kir.et\dlll efJec1, and pTOTiIll: Ib&l. bound'r)' ditracioa OCCIII'I oj, a defect (0 •• atbet meta-delec$) 1!ledIaD.iI1P.
,.aiD
A
by , .. 1104I00&I s.ln« ' ''''''''''''''' ......
" , 10 •. •• 1 COIICEIIT ....TlOli I'l.UI:'ro...T1OKS
,LUtts,
AJI1) pU:CIPI'rA~IOII
DalVDI
II 11O'OSF:l>
C. "",,tin, J.I.. ~t, I. 1.1 _ _ Ann . . .rb CUI btl ".1t.. ~ in of • f . ... d..t..,t j """ hoqu_nel .. ..bleh eln b1<:.".. of 1J>UutlU.1 .npp1l>q I t I ~IUo"d ItotuOq_ity. , . . . lplUtlOl'l Gr 1"'\11 .,.1. conconu.U"" Uuc.Ultl"". 111 CI ...... 1<1one. tho...,f .ro .... 11.01>11 and . ....on... ly ... 11 _ n ' - . III tho point "&ner.~ to _ I t be IIryc anOlJ9h It I"", _9ft I t _ ut"re I"• .Ito .ediotr1b.1ti.on to be ...... U. _ _ _ nllb" 1.... ... , • ..,.Uon 10 ".ry " ' - ' " 1~ lr • • dl.tion .., .. l~n . . , ite '~1~~ in t .. tqued o. e<*pt _ . . riOi. 10 _ .. eon t.OVIni. l . POIII,. 1' _
~
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"
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Flow of raciation~ 'lllcanciH 10 grain boIn:I&'ies causes lIA1dvnent ot sIow411usiott i\9&deI Ifld dlpI«ion of Ilst~ species ....... grllin boo,nlarits because '" iIwerM I
1hIs won.. IUppOfIed by !he Matert.b Sdenees Branch, ses, U.s. Department 01 Entrgy, unclef Conuaet Oe·AC06·76RLO 1830. (9,SO ' . 11 .) 011 TlIt POR! I"OkIIATlOli AT IIITUPIIo\S! aovNllUUS Dl/1U1iG: OtEII ICAI. DlfnJSlOII : SA H.elmn, Dopt. of Kot. Ind M.tLo . Inl .. Klchi,.n T.ehnolo.led Univoul.y, ~Ien. " ' .9931. In "n)' ,r.etlc.1 tn."""", pen fOlMtlod "".,1 ... Intor
I t ... t~.
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o.
p.occa.lna of ..uri.lo : hiP.
<_ro~u
cootb.... bel", _ .xa.ph ..... In 01 ...1. pbo ••• y ..... , Ulh can ~ .
kll'ken4all .H.". under tho Inn ....... of .n .1." •• 1" " .. rront In thin .. ullk <:""""".01' lin.. Iwt.o H... l ..... nlp ••
lhe
t..,.. I .... u
h.... IN ... porfo...<1 on Q,JM.
"-II""
. ncI Al ( Cu )/Io' f U.o
two·,.... , ..
~.I~ • · " ro .... trlpo· "..,1. a_try or td U no nno<:tv. ... . vb'<:h .....1wt. th ln· fll ....."I,..I... to or tj,. J."'kenclall dlll.... l .... ,,_I.. . Stoodl ... I ... '""," tho ................ f .... Id uod b l ll""k ro.... I ..... tIIo ol, r.Uo .. of o","u ...... . tlI • • fr.c ... r oolu •• o"ltl .... 0.. '0 1.... . . . 1." ....1'• • • ' .... . NI tho .fhH of >tuu .... t ho to ... ,lon of al.".r_'v •• I .... " - ' . ' b."lu 1>0 ___ .l.r lfle
(lO ,lO . .... )
Efl'Ecr OF PRESSURE ON DIFAJSION IN Sn..rCON
Salman M' IIIa, Sleven D. Theiss, and MjrbKI I Azli; Divi. 1on 01 Applied Scitntu. Hatva:d Un,~, CatabridSC MA 021311
diII,,_
Ocspiu: IIIc w~ _ of procusln, of Si in Ihe Kmic:oowIuo;1Ot' in6\ISII'Y.1he IIlmisIic mcdI&niSlllS of Jdf mI impurilJ dill'ouIon ." Rill. I!IIlIC:r of dcbale. The ~Do;.I 01 v.::u.dcl and l£lIcruiliall U'e 10 wWJlI\&l DO dina measonmenl1w been poaible. We U'e dw: ICtivation ..... ume lor KlI - ' dopInl difflllioB in Si in 'n 111lO""'1lt 10 ~ dw: I1XIChanism. kin bnpWilCd ....npIe$ ~ fWIIIed 10 !he pcma erysW by ocU4 pI\uc opitaWI erylwliQ~. Oi1l'uPon anneal, an: (:Uried 0lIl 111 1 ltIP ~_ IlId iii", pruIIR dillllOlld an...u""n bd
mcuurin, "*
110,W •• • • )
GENE RATION OF EXCESS VACANCIES DURING HIGH ~Ii~., W.P. Su.. I.nd J..J. Jo ..... McGill U"i"e"ity, Dept. of eta ur(inl En,il'let. illi. 3f50 U" ivu.J1J S~l., Monlnal, Canada H3A 21.7 .
TEMPERATURE CREEP: W.
TMS Fall Meeting--S3
-.............. r_"' ........................ Hi~"IOoiIy .
_ _ - ' _ _ _ oI'\ooO"'"","-''''''icIiIJ
_ . """ didiI\toliaoo .... wta _,..... _ _ .......... - - - .
~-----..-.,.~.,.,--,- 2) . _ _ . ... _ "' _
io 1) ...
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COIIIiIl 01 ~1,~ ....,. '" ·r... poniclco or pcriooIioaIlJ.>POCod "ton Iho ""10:1 1 _ - . Tho onaI)'Ii<: "'0,'01. 11111 ,,"vc botn _loped lor SIOIOIyo_ ooIi4iflClllooo do oQt IfI'IIIJ ... _ .......,. . ... toIi
""idir....... ~
19,JO •••• 1
LASER PROCESSING OF METAI. MATRIX COMPOSIlES: &..L. Mamlk.nju - ' R. B. BbIpt. Applied RawdI ~-PennsylvaniJ, S1IIe UlIlvmiry, P.O. Bos.lO, S...eColkJC, PA 16S04. l.aJcr ptOCCuin" in IhI: form ofioso:r weldinJ and cunina. olfr:r unique o;ap.bilitlel_ oonvtntional proceun for 1C!v1ftC"" malCriah, IUd! u meIIi IlIItrix ..:omposilel (MMe). SlIIdies COIIOemin, Iucr P"J""'Ui1ll of composile. have bee1I oono!uclCd, and included in dli,lowalipdon ~re aluminum wilh
A pltenomenolo,;ea l lDOdel i, prellCnted (0' Ih e nee.. ...e. ll ey
IIOn«lItrat.iOn durinJ lIi,1I temperature ereep. TIle m .. in COII.tribut.iOll 10 ...... ncy Jtner .. bo .. II from the non ·~nllCtv .. ti .. e movement of
therm.1 JOl'. V.. ca .. cy .. lIl1ib il.tlon i. t aken illlO .. eeoullt on di .loc.tion.l. well ...t ""in bound.rie.. Furthermore, the effector uce. vH .. nd el on tile nuclution of precipi""ttI i, dillCUlR
METAL SCIENCE OF JOINING V: Welding Processes 110,10 • •• ,)
by TMS Solidifia2ticm and Physical Metallurgy Commitl«s SpoltSCf~d
EXf'tOSIVE WEUHNG·-UNlJ(Jt$T.o.N01NO MIl> CON'11tOU.JN(l mE PR;OCUS: l:. Q...I.ioK.
~
..i<_
Woldi.,. I"";'..,. 1100 IUtwoI Rood. CoI .... boIs.Ott 43212.
In tho •• pIod ..... l
Room: 200 Cincinnati Convention Center
ol . ...... _ _ .. I.... ......... "' . ,.'" IIIaI d
Sessiolt Cluzinrum: Robert Messler, Rensselaer Polytechnic Institute. Dept. of Materials Engineering. Troy. NY 12180
II. oppIiod"" _IfOIIo
Wednesday, A.M. October 23, 1991
f\ilIlWltllTAU OF KETAt.5 JOINI Ne IIITK t.UtRS. J S.ndl. lI.tl ..... 1 ubo . . .o
J
1"1"911 .
_--._~
1_...,..., .. __
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or. hlJh I"ton.ity ."d Ih. Inor,""''' ~f IIlh' Op.\llO t .ppllc.tlon o! tun t.ehno l ol1 to _to h jolnln, h ."pp~rt.d by • f"nd&men.&I und ....."" l n, of tho phy.teo of tho 5 ..... u npi n
fo llov .
_~_""idI
"lIS
tho ..... e Intrln.le e hu .e,e r! otl e. o r • I .... . . . _ub .\ol n·
p.oc.. ..
~.,.
•• pIooIiwdJ wddi"IliIBiW _
18,)0 •••. )
In! hue
__
Absorptivity v. . l . . by ""0
t h.n an of •• Bnitud. . . . !""",tion of _t&l, .'IIP.ut"•• , o", eIo .hl e b . . . . . nd lou ..... ve l ."'th. I n ..... bu .... Idl~.. ,nd brosl", p.""... l n, . •v. po r. tlon .. r .. ul n ...... ol",!fl un. pl __ .nd be"'pl_ lnt.. ~ctl"" . u n .."'l~'Jl, oll ~ r tho .,..<1.1 dht .lbbU .. n of ...... U. Tho p.ob.bll tt, of ,ho bo .. bol", .b,o r Hd by tho p l _ Inc . ..... vl t h ,ho Of\'UU of . ho v.... t."'t/•. "".,. .. tho , ...""nol<, for ou .... ln, .. ! the be. . by p... lol .. In .ho bo_ I. 1"".... 1, p . """,.lonal to •.a.... I ,,,,th . 11100. th. be •• Un IN r.ru. , .d """ to tho .... l And " _ o l tlo,,,,1 , .. ~I.n' In ,ho ph.... !:od. or th.u pby. l ul eff.e .. ond otho ....... be un.krot<>
(e,n . ... ,J IW'1D-SOWlfICo\.T1Of( PROCESSINO Of .\U.OYS USINO DUUiClED-ENF....OY B£O.MS: ~ u .._ ~ NrIicNIl.oIIonIooy. U ............ Co\. 90}1.
..
~J
, ..~I !' ....... -.uorP:oUJ;....po1ilol< lor ~I _
........... "" _ _
ClO ,H •••. ) TI,+"NS1ENTUQUID PItASE BONDING: W p MsPmthh"n. W. Eop. W'1ddoa tnd loiniloa 0""", RBI 4-136. ~ ... MMuiob Sciet\u ..-d En(in
...na.. """"' oM . . ..ur.od_
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.....
"""""" . . ._ ~ . .ilor .. ... r. ~ ... _,... ........ _~ .. . _Iail. .. ...,.".\IIo~..rao.. . . \IIo _ _ bl1io
-a.. ........
"'-"110 .. _ ~ ......., poioo _ _ _ _ io .... """"'...,..,.. $iff_ _ dot _ _ _ .............. - . l.-.....r
....or..... ...... \IfOtOtdo • • _ _ .,. taIld .... dift'_. 111<
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1. IhiI poptI •• .. rio... "' TlJ' 11 . . . - 111M ~ ... pno:tkaI .. !hal _ ...... _ wIIm ........, Iht ........ lor • Ii.... .,....... .... ....n. Iht ~ ~ is di"'usoed ....... dtstripllorlol f _ =earr~ ph.
54--TMS Fall Meeting [la :os
PARKINS SYMPOSIUM ON FUNDAMENTAL ASPECTS OF STRESS CORROSION CRACKING IV: Metallurgical Aspects Sponsored by TMS/ASM-MSD COrTosion & Environmental EIfrds Committee Wednesday, A.M.
Room: 302 Cincinnati Convention Center
~sion Chaimum: Stathis I. Meletis, Louisiana State University, Baton Rouge, LA 70803 {a.)(1 a .... )
37nS
Measurements (II \till ralG 01 crack propagalion have been canied aut under slaw stfain·rale leading in 0.8M NaCI kif oriented crystals al Cu25a'O Au. anodically pala-izItd 10 the passiv9 domain below the critieal poleotiai (Eo • 430 mV. see) under condilians where hy
R. M. prnrazzoli. and M. O. Speidel. lnslilute al Metdurgy. Swiss FII!Mial nslitut. of Technology. ETH-Zentrum. Zurich. SWitzllfland Slress eorrasiDn g-acir. growth rales of 1ot.r types 01 ultrahigh S1/engtfl steels exposed to water are comparilid. TIlese sleets are " 340M. 06AC. Maraging and high Nitrogllfl eusleritic sI!¥riless sllHIIs. At equal strength le\Iels MCI stress intensities. huge diI1ervnces in eradr. grOWlh lates are Clbs8f'i8d with high nitrogen austenitic: staaIs being the I&asI susceplibilt. The oj;ffervnl stfess corrosion craclr. grC/Wlh rates and lheir !(Imperature dependence Bra I;OI11pared with theoretical prediaions based 00 lundamental aspeds. These include the aIkly a:ompo~oo (C. N. 5). microstructure, as well as physicaf and eh&mical envirorwnental parameters.
MlCKOS11l.UcruRAL EFFEcrs ON THI! ENVIRONMENT-ASSISTED CRACKING MECHANISM OF AI·U-OI ALLOYS: R I MeleS;, lnuisiana Swc Unlvenil),. Marcriats Enlineerinl Prop-am, MccblUlical EDpncaiDl Dtpartment, Baron ~. LA 70803. Environrnerot·usisted crackin, of rolled hi&b·I1tCn&lh, AI·U-OI aIIoyl ill NaCl soJuriou is inrcrpanular (10) when rca, is performed in the sbon~ ditection and prcdcrminan~y transpMulu (tG) ........ IQIiftl ilI __ ducted alan, the roIlinl dire<:tion. Our ",,,,lIS shoo..- Q lire 10 cnr:kin11llO(\(. is produced by hydro,en CmOOllielllClll wherus Kl c:rackinC CUI b; produced by hydroeeD cmbril1lcrnent andIar di1$Olutian depcrIdin, an dlc ck>;o ... bi:rIt>;al
porcnci.oL Bodr IypeI of cmbriu1crnmt were founcllO cam:1aIe very wdI with Ihc .....ume fracIion of !he TI (AlzCuU) phase praent II the paia boundIriu and the slip behlviDr that is d«cnnined by !he rnatrU tn'(ipiWCI. A b)"dlo&en tmbrinlearent and lUI &IIOdic diSIoMiaa mcdwrism an: ~ that I/'e con· siS1Cn1 with the obseIvuI rncwgraphic ch~ mICIOCUuctural features and defannarim rrrocs. in IheSI: alloys.. {lOr SO a . m. ) U_"Wlllio, lb. iouliud _100 an4 ...... _ i ..
11.,.
l,,
Tlt.o.NSGRANULAR sec FR...crooRAPHY·t.!ECHAN ISTIC IMPI,.lc...nONS: l:armIm.. _1$'-
lIrII_.,
;" ID
.R&ro I.-rrbo'ot ... ,. c _ f.. ....... w. S
~ ..
Tb&
U ...., , ... _ .
~
~
M ... En,. De\II-. Uoi • . d antill> CoI"",bio. V""""""r!\C. V6T1ZA. Dopo. ~ Mo!I&lI. I;<0Io l'bIyL. _ . PO. >UCl ... ,. Camdo.
" • , imilar IUponollo, '" IrI
coad_.
",d d..... '.d e.IM H'lSO.
ToooIlo, ..101"'.... npor;or ........... «.uW>
« ... tan<:<
of TieoIIOJ.
'"
JOI~tiorr..
tcIdi~
Ii.'"
....... _
'''P."lroy' io .be ,boo . ..... 'io.ed ••• _
crockIq 1CUi.. of _
0< .........." ,
Tho ..,ulu '" 401< wiU be _red. "'• . - URI uri _ .. •• 11 .. Hi_ MlDio, ~ .... for tur.Iiq "'" wart:.
).
_
TIcoIIo,
oth.r . Itt.oed applicariooJ III IIuiorr- r_ _ _ ...
{S.S5 • •• . J
J.I. [);eUon.
. .. . )
/l0:25 a .• . J
COAFIOSJotf. ... SS)STEO CLE"'V"'GE )N COPPER-COlO SIHGLE CIfYSTALS' e. D. lio;:h!(I1"', lind W. F. F)~, Vandorbilt Univu-rsity. ~shvi))&. TN
_
~
STRESS CORROSIOH CAACKJIIG OF HIGH SlREHGlH STEELS.
....ruw".
""" VoIocIl.
{lh05 • • III.)
MICROCHEMICAL AND MlCROST1l.UcnJRAL EFFECfS ON S11tESS CORROSION CRACKING OF NICKEL..BASE AlLOYS : ~ •. b ,
DepartmenlS aC Nuclear EngiJw:eriJr& and Materials ScieJIc:e and En&i""";"" Univa>.ity or Mkhipn, "'IID Arbor. 1.11 48 tOO
1
ST . .,NLESS STEELS:STRESS T. Univu1:,~i.:~:~~~;:f~~~!:J:~~:OF TH~ BRITTLE CORROSION III do Phy.iq ..... Ci. 59US ~D
M~l a liurgi .,
, )
B~I.
. ' ainl ... I I exhibi' ~")"' ::!:::M:'.::'~ i cr~ctlng in a I Ihll ~ new inla
)
'alV. lheIn ':.act lip al18 it i.
Ii
~rllcular.
~nd
film r"PI..-., can -""no:<> lIMo morlillty di.h,catlon. near lhe .... fau. which IDd"" • • a softe ni,,!! of I"," c:orre.ponding r"ViM. Oilloca tiOf! piled- up. are l!>en '",med ., t he Inlerf.ce between the ool1 .... d r.,gi"" and t he hardened bulk regiOf! . Be<' ...... of cODdl li"", 01 ruttlcled .lIp. lhe lire .. i. reIned by a brlill., micro-cr.ding which I.~ '" plac_ by cle...go . Dd/or by brill Ie .......119. "'""",di,,!! ta I"," crl1ic~1 lenglh of 1M pll"d -~ for cluv. or ..... r. lhe cl)'1lallographic .. peC1l 01 II", fr~cI ... can be "".nlilaIlY.,ly
predicted. FiDlllly. ,he inn""nc. of lhe main I.CION governing I.... see ..,milivity of . .... Ienilic .,.inlell .Ieel i. di.culSfll.
1;:jr'lo~~~:,,!;~'~'~SISTED {9,tS ' ... . J
~
FRACTURE OF DUPlEX STAiNlESS t.4a1l1ria/s Analysis. P. O. Box 3751.
Femlic-austenitic duPl&x stainless steels all! suscoptible 10 stress eorrasioo g-adUng in hydrogen erwironmeRi. Two phenomefla: tile
phase inslabWty al auslenite caused by hydrooun. and lila dislaeation oontfofled deavage Iraclure 01 ferrite. are allhe ariginal 01 this susceptibility. Based on TEM and SeM Clbservations. a model is propoiiItd explaining tho mechanism al the flydrogon assistOKl cracking.
Discussed is a possible improvemonl af the lesistance 10 hydrogen by modiheation 01 lhe initial subsvucture.
II i. naw well ulllbli$hed illallhc: SInIC1LIn; and chcmislry of crain lluundarics pl.y :an i"'JlOl"WLl role in cnvin>nmenraUy.ind..ced inlergnJLular crKkin, aC nick~J.basc: alloy.. In ~~Iar~ caJbide pouipitllio!!. chmmiwn deplellOfl • • nd rrnpunty .. ,repllan .. ,nrfican~y . ffcci the .nrcrpanular crackinl bthl vior of lhe .. alloy •. We hove """'nlly found Lhal the crain boundary characlcr 'lUI .ffect 10 cnckin& .usceplibilily. Then: is alao mountin, cYidcnoe thai carbon in salulion $IrQd&!r affecrs IG cncw., in WIler at 36O"C lhrou&h its aff... on aeep prl)tt$$C$. In rodditioft. lire cuban level has aIao been found IQ affCCI !he formation and scrucwn: aC tbc
craclrin& fA niclcel·bue alloys in I
hi&h It::mpcI1Ilure wau::rcrrvinJnmenl.
(11.25 a.II.)
MICIWSTRUCTURAL "'SPECTS CONTROLLING TI£ fNYIROIO'ENT-SENSITlVE fRACTURE Of HIGH STRENGTH AlIJlIHlI'I ALLOYS: N.J.II. Holroyd,
Alcan Intern!liol'loll LltlIiU!d. South6111 Road Baitiury Ilian England 01167SP • ., (Abnract not available)
TMS Fall Meeting-55
con.l .... U tlon (U\e~ .... le
,. ..... ral
PHASE DIAGRAM PREDICTION V:
Phase Diagram Enluation and Applic.1tions,
Intem.ttional Symposium Sponsored by the ASM/MSD Therrrwdyrwmit::s and Philse Equilibria Co mmilt« Room: 204 Cincinnati. Convention Center
Session Clu1irmm: T. Z. Kattamis, Department of Metallurgy
and Institute of Materials Science, University of ConnectiCut. 97 Nort h Eagleville Road, Storrs, 06269-3136; J. H. Perep!Zlco. Department of Materials Science and Engineering, University of Wisconsin. Madison, WI 53706
cr
•• ,)0 •.•. ) ~ ... SE: _OI/t, ~..." I ~GI"IG 6Y ""'MIS Of' DI"I'U!51QN 1;0000Lf". Wolte r t c ogey' r
Instltu'"
l"I.ted.l a,
tor
ene.le.l
r£~fItATIJII!l!:-GllAOIENl
..,.,
~.t ....
T~~loor
01
ft • • arer,
Inoreenle
TU VI.""., Getrelde .. _ t 9, #1 -1000 Vie"""
_L.... ...-.. p..-~U . .
and
_e <11_ _ )
o f 11101<& f...-.a 1>1 the ......1_ ...,.., e ... the of _Ideal ~ul ... IU ... t.o 1M: _ . TIll ........ L... _ l o r caro ..--lU...... I predlellon ru l e and ..... Ihbl llt¥ criterl .... 'n the eval ... U"" of U>o o _11""U"" of thtl _ " 1 .... to pi>.- " . . . ._ • _ _ _ "...,.!ic:tlon are ~
Wednesday, A.M. October 23, 1991
,,_1.1 ...
con.lItuU"",,1 c:rylltal .truce........
"f tho<:
........ Is,.ooclll . ttenll""
ha. been
Ii "en t.o the binary .......
e .... t.Io .1I0y. f" .... d with ......... A I . In . ' I, .... . ......... Bi).
(9,SO •••• )
ASSESSMENT AND MODELING OF MU t TICOMPONENT AI PHA SE DIAGRA MS FOR IN DUSTRI AL APPLICATIONS. ~ J.. Mum. A1eo.a w.Ixw.torier, Alcoa Cc ler, PA I$O()P. ComJfthel!RTe UICaI'IltIIU of mallieompollelL l pbue dil&'lPII m me, altboqil le&rlll1l .:ommerciallllO)'t btU" It comp1e2. 1IIu1\i......poDUt
.,.teaII. '" order CIlU1ruetio11,
\0 Idbore \0 tile
\bermodfUllllc rw 01 pb.Me dl~
Ole mlllt be &bIe to ~ lIIa.1tidi--'al objecu &lid illMbmuI or iJoaIm..... tiDII au tUoqk \belli. TIle lIIultidimelllioaal OOU\"..tioa liM \0 be c:omJILglliQud 10 lbe ea&ileer ..110 _ die dalL Piulll, peer YOIIUDt 01 dah ud COIUlru..\loa I*bIi ...u.c..~ Iilllil 1M IIUllbel cl HOctiOILI u d prOjectiou Iklt cu be pro., .. etf. ModtnIlllttbodJ of \MnDod.JUIIIk ual:rsl' offer p61tial re;ef &om 111_ dilllClLllis; 1M rerl 1111111 come frolll OIL Ike 1«lulk&I probleml to .. Well lilt dil&'uu will be applled. Sollie approaclla to A1-bued .,1Jle1Ll.l will be delcribed.
dear.,
m.
dU ..... I ... !n"
1• • "lno Is IOn •• G.riNan'.l oroc.dur. tor .....-t1ons 01 t>\ .... rr _ •• dl.9<" _ _ t>,. _"n.
(10,10 •.•• )
of
.. l
I'Ill"JIICl'I: ~c 10lUIYS P, " Shah, Pntt , Ifdtney D. L. ArItCI'I, lll.itecl T«!ln:ll09t.. ~ c.ntK
~h.se
dl.~8M
I.ot~
.hd
tc~e r.tur.-or.dl .nt
diffu s ion
... ".r.1 ellHu.lon eouo l ... h ..... t .. O In • t .. _ r.U...... 9"'..:11 .... ' . fnu . ..... .Iero.true ......... e." be dir.eth or.". I ••• d I ... to bl"-'~ ....... dle9"'_.. ..it h the u_1 t_-OI . .... &lon .. 1 ( . " ' _ r ....... v.. e_.I_I_). l ..... r ......... . . n •• _lon •• _ r . t ....... of non-"' ..... i .. r • • cllon. o f bl ........ .. .... u, •• (oc:e .........""'" 0.- dl. _ _ _ • of ................. ) e.-. .,. dl ... et I .. d .. t ...... lned 'ro .. t n . . . . 1<:....... ......, ......... . ", .... I »tie .. 1 . . t hod. c." .. 1 .. 10 f ..... the.. I,,' ....... tl on. Inclual,... cone_cr .. tion ....... '/1 .... and the roeo ........ of the _ ... b _ •• ""Ich ...... ..... c ........... t . . . . oeoll .... tl\e _ _ "1.9'"_. It.... n. fo..t .bl . _ _ t • • tabl.. .",... . cO\.IPl" •.
In t ..... l.tt .. r
ClOSe " .... _
of
n_ ..,... ..
reeetion .. . r .......... n •• d.
(iI ,SO •••• )
(V"ltlATiOH Of BlfWl1 Se·Cu PHASE Ol"-GIWI YI" TK(RllAl MIl KET"llOGAAf'HtC ""-'lYSES: L...AU.. 8ru sh IIInun tn( .• 17410 II . I'o r tlge Rher $outb ROld. (I.,,.., Ohio 43'16 -9502 The IIln", eu-8e phIl' "llguli hu lIun A -nUllned. Th. liquidus. solldus, sohu. r..lttctiC Inc! tuttctol" tttll)tnturn for sM!) t1 with I ring. of o to 20.00 wt .$ Be (61.80 It .$ lit) ..rt . ."ureet durl"! tOOl 1"'1 Ind "-ding tltles. T1lue uplfl_nh show hn durln9 the hntlnQ tytl. 0' suplu In noun Ind n ·hgt WQrktd ( ~ T'tdutUon rollDW
1~ , 10
.nd
EII"U.rin.. Ua' •• rsily 1m ..... 6110'.
Ur~on •.
o..fI.. ot
"'
~ h1
~~in
__ ...tfied _ _ _ •
thaJr ~lal bI/>IIV1ct. it t...t: ...tul to datu. u.. .treet at olloyin;J on u. ~ ~ cac.Ily -..:.l.lltecI
~:~ ~~~f~o w~ ~.D:Jlf1. ~~)lt o~
aqally critical 'tQ.
k1'IC:U" thII relat.1cdh1p to t!a ~1n;J . . that in-a.itu tw:> ~ cr ~ita ~ can \:It .-plaited fet ...pn..r-in;J fWliceti..... 'Ih1a poper will attap; to Ihow I\cO.I IIUdt infa.tion WIlY \:It ~ in a ~ rifCC'Cl» bit .::nI uoetul ....... u.in; ~ en;! ~itot totmary PlM8~. It will IdYccatot for the CWlticn at a ' 1iIIMrt data _ ' , 1IIIlVin; pI\aM dUgnIo ~ticn with iIolat-l ..tti-
53706.
Sc""""
eo.1 i. I hyl.oca,lIoa ...... b hoi • '''"''1 of compoli'ioal. llepudin, .....11 •••• on"n ..4 ",0)0,10 . 1 hillo.,.. 11 il IIe •••"d from "a,y,.1 hy4.ocorbon m". nlh IlICh II cellulose . II" ..........
."i.,y
IpoUI. ,uinl Ind po llul. ""hieb ,h.mse l... I of compoli,' ...... n.. pro<:Clse. by .. hicb ,h.se .", .. lal. or• • o".
<.i".
,,0<1,
The dll trlbutlon coeffiCient Is a key parameter In calculating the solidificatio n path of an alloy. \'et Itl values ase rarely known for multl , co mpone n t a ll oyl as a fun cti o n of eomposi lion and temperat ure . WIth rece nt developments In thennodynamle modeU ng and pha.se d l.gram c1l1culation. we ca n obu.ln the value s of t h la coemctent III • function of temperature and COmposition when app r opriate thermodynamic models for the solId and liquid pbll!l'~ are known. In (hiS prcsentaUon. we wtll eouple thennodynamlc modelln,/phase diag ram u lculaUon with approprtate IIOlldlOcaUo n models to predici Ule solidtOcaUon paths of . everal Ai- ri ch AI-U-Cu a n d AI -C u -Me 1l1loys. The SOlllUOUtiO tl model used Is the modified Sch ell equation. which lncorpor.ltel solld -ltate d iffusion . tl O,~O
•.•. 1
MODEUNG SOUOIFlCiIITlON Of' WCCo-C AUO'r'S: IU..XtIID. GTE Inc.. 40 ~ Road. WJlthIm. t.IA 0US0I. I!tcriy pubIahtd
~
""'' IUJ.......... dlllI_,1IMd to 0QInP<.lt \he p/1aM dUI~
,.".thteo. w.c.~.r;:I_IOIo.I'~d\ri'Igeool_oI_
no roIIIIe -...on In oaIIdt.~. mbcIng In " " " , _ n o _ 0I~, Tht IOIIoMcaIIon PIIIII ,.".~td_ 01 tilt
_
~.......-.g
~ prlldlcftd LhIIIheIlQl.*l_1I1111 ......... ybe _ _ 1wver tIWI .... 1n1llltdkdumgcocl_ ....... ~ _ _ _ .. ~. lilt -"""""Iq.jd.",.... _ iI:JI.r'd 10 bt Bawd on II'-. ,....... 011111 ""'" to ....... ~ _ propoooed 10
Ihe...v-o
-.."IOCtJ,.....aIy..........
httprM .... formIrIon 01 • CcI-
(',lO •••• )
aJInlIllil.rT 1011 1'0 THE I VALUAT.OII
or _
UJtTI\
.~LOY
SYS1tIIS
S.Do!:lrtno, C. _ _ .... Saccone """ c.e..,~._1 T. lIt .. t.o ~I Cht.lc. Goner. le. l>nl~e ... lu dl _ ••
~." rro.
"I A I ,
Ilene.-lto)tV, J. 1_/6132 ee""u. 1\.Ool y.
Il I. " . 11 kno,,," that " I th in the r..Uy of the n .... earth ,,1_1.00 1......,1.111 tho ~trlv A I ..nt·".,..) .....~.I propcrtl eoo cl\oni
i.e
at
'l'O~
APPLICATION OF THERMODYNAMIC MODELS TO THI!: CALCUUo.TION O F SOLI DIFICATION PAntS O F MULTI · COMPONENT ALLOYS: S.-W. Chen. Y. Zuo and Y, A Cha ne Materials Sc\en~ and Envneerln, Department . Unlw;rslly Of WlfCOUl ln -Mad lson. 1509 University Avenue. Madison. WI
U,b.u·Chlllpli,o.
ho..
In
-.uu
(10,)0 •.•. )
Wen . DtPl. of Moceri ...
lIlinoi.
~AMl~~~rm
(11,10 •.•. ) I'IIA$[ OIAGAAIC IOlHLI~G fOR T1TAHtUM .fJ.L8lS \/JTN AOOITlOHS Of OlYG(N AND NtTROIiEM. N. S.under$ .nd l. thindruek.,ln, Ooep.ortJloent of Miter/,Is Sci,ntt .Iid [nglnee rlng. Vnlvers!ty of SUrre" Gulldford, Surrey ~U2 SXH. UK
It Is ... 11 known that low It.els of o~ygen tnl nitrogen cQntlmlna tlon can ~19nfflctntly IIOdlfl phIS! eQuilibria In tonventlon,) tHonlu .. Illoys. I\owe.er, ..ch of the eyldente
56-TMS Fall Meeting Mduplu. Mm\ImIf'r. produon bend"II:ia] iDcruseI ln d«Iilil)' II IIoe 1tllp<:D$C of • biper cn:cp ra~ For uaqole. al16O"C'\OSMh thr.1Ieady-swe cn:cp ra .. of the duplell SU'"UCIIR (1.J. to-",·I) it I'M> orden of IDIlpirude ,",Ita tban dill of the fully-lI"Insfonned IUVCtIn (4x10-7~. 1 ). Creep cwvc. for various ICrUI/temperaIln combinItiona wiD be p".. nKd aIoni with !he: disloc:ation and miclWtructUnJ chlnles obsefved by TEM eumitll~OII of intc:rrupted-<'MP . pcd mcn •. A qUlmilatlvc metallo&nphic analy,i1 by. combined SEM·TEM tcc""lque of the plwe disuilNtiools in \ht.s(. spco;imelll will 11110 be psesented.
.... tc~
~u nt.bltshltd tlIoIlr effect hu bKn qUilttHln in "'ture, .1Id Httle QUint l t.t ln expe rl.nt. l IIOr k uh h In " ..... r)' .nd kig~r o"'r system, T~ difficulty i n _uurlng tM plr tit ionlng of o")'9In l lId n t tro~n It tilt .I(ro$~pl( l e.e l further u.c,rbItU t~ di fficulties In wl\dtr $tlllding the i r influenc e on fllKhlnlcal prope rt lu of ..... Illoys "It~ tiM alcro.tructUf't'$, Thh ,.pe r .H l pf't'lent ...,uIU of phose dt.gr.n ca lculat ions for • • Irlet)' of tltlnt ua l11o),s .tth I ddltl()ft$ of O"J'gen Ind nttr ogen. Ot~r li ght e l_nt I ddltl ons such I i cUbon Ind sllteon "nl I ho be tncluGK.
PHYSICAL METALLURGY OF INTERMErALUC COMPOUNDS V: Titanium Aluminides 2 Spcmsored lry the TMS High Temperatl4re Alloys and Tita",il4m Commiltas Orgtmiurs: Dr. R Darolia, GE Aircraft Engines; Dr. D. Miracle, AF Wright Laboratory; and Dr. Y·W. IGm, Metcut·Materials Resean=h Group Room: 2021212 Ondnnati Convention Center
Wednesday A.M. October 23, 1991
IU'rECT OF MICROSTRUCTURE ON TH E FRACTURE AND C RAC K-GROWTH IEHAVIOR OF A GAMMA TITA N I UM ALUMINIDE ALLOY : Jg/Ip J Kluk Dea";' M. Dimidok, Wrillu LIboruory, M.I.Ic:rialJDUmoruc, WJ.JMLJ..M, WPAfB, OH 4.s0U!i33; and VOUDI_Won Kim, Macut. MaIaiab: Rese&rehGroup. PO &0.. 33St l. WPAfB, OH 4S43J.OSlI The frxtun: and f.tip aa-1'"O"'Ih behlvior 0( I rwo-p/Iuc panma tiIanium aluminick 1.110, Wit InvcJdpced. The allO)' was prtpIf10d b)' LnP cudn, rollowed by upset fcqina. Heat \IeItIDeII1J. ~ puformod in order 10 produce bodI l rdativcly fN pain rull, lamellar _ 1 l I d • tNIIIa - . whif;:b "'1'"',..,,1 t.n CIUKI 0( miCJO&lllllCIIII"U IIlvla, dltterenl anriblotcs ill perfomIIIoce. !lim of ~lopinl Ihcsc SInII:Qn' ;. 10 dctermiM wIIic!I _ _ ......-;.s.. 1M 1ouI: bmnce of propc:niel.. -III- _ condIIo;1ed It _1aIIpCnIQn ..... , oomp.cNmsioa 1pCICiInat1 ..... 1"no:Qn I'tSisunoo CIIriU ~ ~ lOr bocII AnICIIIIa. Filip C2aCk-powtb _ wen: 11110 oondllCted IIIIdcr The same cooditiOllJ ill for !he fnctllrc: IeSI$.. The intIueDCt oIlIIicrostl"llCtln Oft !he frKtun: and f,tip CJIcl:.JfOWIh pcoces.tes will lie ducidalcd and diJcuued.
ne
~
~
(10,QO .... . )
~su""
CJurirmm: Dr. Dennis M. Dimidulc,.
THE ORDERED ORTHORHOMBIC ALLOY ntNbAl R G Rtr«e
WL/ MLLM, Wright·Patterson AFB, OH 45433-6533; Dr. Daniel Eylon. University of Dayton, Graduate Materials Engr., KL401, 300 College Park Drive, Dayton, OH 4S46~240 (1,30 • . •. 1
SOLIDIFICAT ION AND GRAIN REFINEMENT OF TiAI ALLOYS: S C Huug T.J. Kelly' and 0 .5 . Shih.' GE Corporete Rceea...,h ... d o...Jop.... nl., &h. nec:t.ad,., NY' 12301. 'GE Ain::nf\ E~ne ..
M-89, I Neumann Way, Ci ncinnati. OH 46216.
complu IOlid ificatio n behavior of 1'· 1aH a ll oy. , tronel,. fln. 1 pro pe"i". Even in bin'l")" ~ containine 46-60 tt.'lIo AI. !.he IOlidifieation t wo peritectic reection', with eith.. II· or (l·Ti .. primal")" Sevara "I"'£l tion Illuall,. occurs. rMultin, ill .tructUH • • r e f.r from deair.bl.. In th i. pre&entation, cur Hllt IInderstendin, of l' alloy IOlidifiu.tlo n will be rfflewad. Method. fOf micro.lructural contl'Ol, 'lIch a. grain ""finemlnt and rapid IOlidification, will aIM> be re-riew.d.
;~~~:~~"'~eir fabriu.bility . nd
ma,.
~nera1 Electric Corponte Raench aDd ne-.-t lopmenl., Schenectady, NY 12301 The .dditton of niobium to n,A.l-hIH allo,", ha , been I hown to improva the low temPlra~u.re ductility anti fr~w. tou.chne.. by inereasin, the ..M by which deformation occure In the 0.2 (DO ,.) ph_ and, for aUoy. containing 10 at.~ Nb or mOA, by . tabili1ation of thl orde...,d beta (Il-) pha .. (B2). Hiahn lavel' ofniobi.u.m in Ti25AI·Nb alloy. h.ve ncent.l)' been .hown to .tahiliu an ordered orthorhombi c pbaaa of nominal com~;tian Ti,NbAl, which h .. a wid, niobium .oh,bilil), ran,.. F.... ctu... touthne.., lenei.ll ancl enep ICJ"etnina atucliu indicale that Ti2NbA.!·bNe alloys ha ... enod potential a l Ii,ht...i, h t . t ructu ...1 matariala. Baun.t atudi" of ph... id enHfication, tran.rorm.tion . nd m6(hanical propu t,. eViluation of thi' nl'" el ... of titanium alumi" ide allo,.. will be
reviewed.
(l0,]0 . .... ) P!LI.SE "l1lAIISfalI'IATI(II$ QI AGlNC 50WrlQl DWlTED AND OOOOIW Ti-24 .s.u-lO.5Ib-l.~ .,., Tl· 24.SA.l-14.5Ib-l.5fIo AIJ.OYS: ~t ,.",...,.." ~ Slqlb...-d IIaay A. Ll~l tt. ~t
or
l'itd\iiiica.l
uni_ni.~I".
.,.,
~an.
I\IIt..,Llb a.io ,~_
ltIqi.-dng.
Stoatl
IIdqht
a t vad_ ~iBIe . and t~ e .tu.r"M an P te_tonwti""" In thNe .lloy• ....,• •tudi..,. ~ alloy bill.,.. vee. aolutlon (e..ted, ~ and I'll" at the u.r~rat ...... 650(:, 150(: and &SOc foI' ~. 1611 and 144 hu. Sel.ct..:l _I...,a ....... tudi.., u~il hing tr.....t ..ian e l e<:~ron aicroocopy In ocWc to det ..... I.,. ~oqy, . truct.ur. _ ~.t'1' of the phuu thet f oera. n - vilt be di.,......, •• l . t l". to tIM ........ fota">iUzadon trH~t o f JO llinutu . t noc,
-n... .U..:uo of .... i~
1t!.i. ~ _ aporwo.-.., !lIglnu, CiJlclnMti. Ohio. (10,~
""~ v, r touS
u .n lroe
on
~
creep
this alloy.
.45 furdtd through a grant fRIll the ' ord IIkltor
t he
~In)'
]9,2(1 •••• )
CltEEPOFntE GAMMA nAl All.OYTI-4BAl-20-2Nb:
by
a...r.l
&.l.ctc lc
Aicc... tt
. ... . )
TIlE EFFECT OF COOLING RATE AND AO INO TREATMENT ON TENSI LE PROPERTIES OFTl·25-l0-J.. t : ~aod A.W. Thompson, Dept. of Mel1.l1urlic:al EAai,,"rin, and Mlleriab Stocncc, Carnc:pe Mcllolt Uft\v.. Pinsbur,b, h . IS213 h i.......u kr>uwn Wt the mIcroswct= of "" I.lIoyI is w:ry depcIIdoenllJ!!Ol'l nriabJel sucb IS pror;en inJ' lOIotionizill, ana .Pt,lempcnimteS. IS .. ell U iO]ulionizinl rime and roohn, rale. The lCfISile properties 01 tbQe alloys IIIve l.liO been ......... 10 be w:ry ICftsirive to microstnlrnln.l cJwtlU. But bc:cavse. Ihere ",mains much un;:cnainlY .. to which phue$, , talllc or metllSUblc, Ire p:qenl, the fill1l mic:ro5tn>cturc 01 "" 11]0)'1 is IIDt wd] ulltkmood.. Moreover only. few syllcmldc investillti"". concemin, Ibe lensilc/micromuclu",
dependence bve bun made for
Ti·2~·lo-3·1.
ThUl, in 1lli1 Inllly, • wide
tpeetrum of rniawlJW'....,s wu obt.ined for this I.lIoy by ~n, soleI)' the
coolin,.,.1e of ~proceJSed specimens IIOlutionizcd in the II phase rlCld. It WIS
found dIIIlbe sc=p/I and du;tility It nxm ICmpenlnm= followed ditren:nt R OOI func:t:ion ol lhe cooIirl4 rale. lhouIJIO be cI\oe 10 the rrooopboloc w ..... ol 0., lulls and wlume frll(tl()n of \he phnc. Telllik mullS oIlUb$cqumtly
n.
..., miI:rosInr;Iura
have 11110 b«n
ned and lite effca 0I1Ite a,jn,1IWmmI
Donald S. Shih, Gf Ai.m ft ""lines.. Mail Drop Mig. I
upon !be lCMik propmlea will lie diOClWCd. Rese.ucb IpOMOItd by Ccnttt for ""pnccrai MaJUials.
As with all two-ph.sc TiAl ·ba$cd IlIoyS. 1he c:nep propeniu ofTi-48AI-2Cr2Nb (II 'lIo) an: $IJ1lfIaJy influenced by mitroSlruClure. The mosl tf«p"",SisWll is • Wille '"fully·uaruknn«!" $lNC1W"I: oonsisling eJlIin=ly of the lamellar 1""«2 eutcclDid pm:Iuct. The ;"POdUClion 01 Ii.... cquiucd pimary l' pain..I to farm I
NOTOI CREEP RUPTURE BEHAVIOR Of Tl-14A1. II Nb AT 6j(]'C I. Liana. R, M Pcllm OeDIofMIlCriaIs Sc~and En&inccrilll Muuchuxm II'IstilUt~ oI1echnolou, Cari>ridIe, 1M 01:139
Ci"d"llIri, OM 4S2 1S.
Ul ,lD •.•• )
TMS Fall Meeting-57 A scudy was carried 00II on !lie creep naplllU pc:rformance of smooth """ IIOICIIed ban oI'Ti-Z4Al-IINb. SrnoodI bas, blunt-1IO\Ch (U-Nacch, KI_ I.6) and stwp.noIdI (V-Notch, Kr-4.2) specimens were IeSIcd in c=p II 6X1'C in llbcnwry air. All llle o.ere inswmerI!Cd ""th I computu-c<:ln1l'Ol1cd l ucomated DCPD s)'Scm 10 n>easun: cn:ep strain and damaae 1CCU1'IroI1a1ion, and JO
speci""''''
systems ~ve.t these conditions. Con~uen~y. brinle fracrurc <)(:CUI'S belore an . ppreciable amount of defomwion. One way to suppress premaruIC fnctwc in bri1~e "",teriaJ. is IO ...~ bydrNtltic: compression OII.to. uniaxial 1ensiun Ill' compmIsion test. Previoudy published "'«k Wl(lue!td III Cast WCSlem R........, on NiAllIu '''''ie.led. posi1ivc effect of .upcrimp
THE EFFECT OF CHROMIUM ADD ITIONS ON THE ROOM -
11lMPER ATURE PLASTIC DEFORM ATION OF ~- NiAI: J p CpHon. MJ. Kaufman, University of Rorida. Qai..esvil1c. Fl., 3261 I. R.D. Noebe. NASA-Lewis Research Center. Cleveland, Oli, 44l35.
PHYSICAL METALLURGY OF INTERMETALUC
COMPOUNDS VI: Nickel Aluminides 2 SponsorM by the TMS High Te:mpoatll.u Alloys and TitllPlium Committees Organizers: Dr. R Daroiia, GE Aircraft Engines; Dr. D. Miracle, AF Wright Laboratory; and Dr. Y-W. Kim, Met-cut-Materials Research Croup WednHday, A.M. October 23, 1991
Room: 203/213
Cincinnati Convention Cenler
Major obstacles 10 !he use of NiAl·~ aJ loys .nd cotnpoSiles Me low duclilily and IOUgh~ss. "These shoncominKs Me &"nenlly considered to re,u h from a lac k of sufficient sHp ~y'tems 10 accommodlIC plastic delormllion of poIycrystailinc: material (Von Miscs' CriteriooJ. Ii has been reported thlIt minor odditions of 0 to poIycrysWJine NiAI cau", the predominanl slip system 10 $hift fn:>m Ihe ""ual ! lOO llCru 10 r1101 '" I b . lbc purp<>S< of lhe pre..,m S1udy is to vmfy tIIi. phenomenon. dwacICri.., il wilh respect to 0 level and NilAI ntio, andcom:llle anychtnge in. oIip II)'ltem witll medltnica/ propcnic.<. OJmpression ~pecimens were pRparal from all0)'5 conuininK 0 to S 11.$ Cr and ""venl NilA I ratios. FoUowinl about 1$ linin, YEM f<>ill wen: produced and tM I lip vectors of the disloclPOM an.Jyu:d ""iog the C·b..o invisibility cril(:rioo. TM dominant slip vectors in Ihe ICI"1Iary alloys will be mapped a.omporiliunally and ~ 10 lIinuy NiAI ofsln.ilar N(fAI fl\(io: tIIychang(' in. Ilip clwatu:r will be discussed. (10,10 a . .. . 1
&SSW" Chairmen: Ram Darolia, GE Aircraft Engines,
"'-ll"r<>peniel of ~ AIIo)oS NW ..., NW willi 11 - ' TIl Of Polo. t.1...Ii!!!!£ P. Nado. M. 000ar ..., S. o,-t. ~ !.Ii'OICof~. 0 . , . . - ' of _.""",..., '-40_~" 10 "II 33111 Sl--. ~ IL 606101, USA
(a,)o .. ... )
NiAJ b» _0 pcodO«d by mccho.icol ' U''I"i.& I~ .D . tt,ito, "'ill .. in, Ql p, ..lloy tatu .. and .11 the lolA tn .. otU1 exhibited • """'E 0<110 > lesI.t .. MedII.ltal pmpena tuve ..... "udif:ld0 ""in hOon60, ieo. A d...,ilit, .. initnum woo ObSctVc
Mail Drop M89, One Neumann Way, Cincinnati, OH (5215-6301; J. Daniel Whittenberger, NASA-Lewis Research Center, Mail Stop 49-1, 21000 Brookpark Road. Cleveland, OH 44135
TEM OBSERVATIO~S OF DISLOCATIONS IN INTERMETA LLIC ALLOYS, f.M. Hazz1csliQt aud Y.Q. Sun. o.,putmwt of M.teri .... Univenity of Oxford, Oxford OXI 3PH, V.x. • The tr""smi.~oi"" electron micrwcoP<' (TEM), uoed t !kV",Opm.."tl in tire e:"r 0.100 indud.,. our 1. leol hi«b ' motion observation. 0/ di, loc. tiuI\O in LlO ordered TiAI aud B2 orde'<':
._.111
pow
~r. l bo
..,,"""
(10']0 • .• . )
at l'I&'Crlaf IIIlUD HiU-AUI ",., HiAl2r-AlN a:tGQ;ITtS: J. DDnial !ItJ,~ nt.Iard An;t2 .vd M1chael J. wta.l: 1 K\SA Ltw1a ~ c.rt:ar' Cl~, at 44135: 2 Max-Plartdt-DWtitllt. tUr Mata.ll t~' st>.\t:tgu't, nG: J Eloo:ln ~ .vd Otqu..rirg, ~• • JU ' £UY1(ftD ~ ~ I'KftRIDS
A ~
.ur.r
or
(9,00 • . • . 1
HI CH TEII'liMnJIlE nEGQAIlATIOlI OF II!TQIoI£TAllICS AlID \1!T1J\II[JAllIC tVITIUX COtIPOSIT!5: J . Dgycb'l<. NASA u wl. b . . . ~oh Cent.. .
Cltvol , nd . 1»\ 44!l~ . lIo. t Int.e-tillie, belns eon.ldtrod for UII I t hiu. ttoop ... turu . in .onollthio fono or I I • "","pooltt ... 'rlx, _ .. t ub. 1*". to lift·II.ltinS Invlro'-"t,1 .. .,ek . Th. dt,
... b .."" • . Th. ~ntolt of p
.1 ..
.h,
( 9, ] 0 •• • • l
The m«t of SII"CSS Stlte on tile MccILanical Behavior of NiAI: R..j{. ~ and J.l .LeWlrldowsld; Deptanmcnt of Materials Science Md Eogir>cerina. Caso: Western Re~ University. ~veland, OH 44106
The weU-known lad of n:xxn-~ IenSi!eductility in potycrySt&l~~ NiAl Jw btt:n attribUla! 10 !he insuffICient oumber 01 slip
_t
to dat:e with itt .....ity ~tM:I ~ .tn!rrJth beirq ebiller to that tar tho e1rqle CE)'tal. Ni ......... ~O'f ~ 100. cn.p t..t.iI'IJ .t 1400 k IIq ""'" " - ' t:XlI"dIct.oId
prcob:lIOd
NiU-AlIf ~it. prt:4Qd (10,~O
to dIotor .
•• ,..1
STABlLlTY Of OISLOCA nON L07ENGES AND DIPOlES IN NiJAI: ANn M, Kumar.nd John P. Hirth. Depanment of Mechani~al and Materials Enginccrin" WashinKIOO SWe Uni~rsily. Pullman, WA 991 64,2920.
In addition It) lite S1andard . "" e~tcodc:d dislocatiofl dipoles. we show tIIal there arc fou' additional s\able defects witll ~oge-""aped cross Stcllons. The relative stabililYof tII= various type of uleMed dipoles and faulll in Ni3AI i,esti"",ret!. Thccquilibrium configunlion. and 1M in.,,,,,,,tiOOt magic, of tile unreacled, extended dislocalioo ""'" 00t parallel glide planes are ..... at ... t«I, 'The chan&" in inte=tion etIC
I,
This w<:rl. is SlJppoocd by 1M Nalional Science FouDdaIion Grant DMR 8813972.
58-TMS Fall Meeting (11,10 ..... )
THE US E OF IMAGE S IMULATIONS FOR DETERMINING APB EN ERGIES I N ORD ERED INTUMF.T4 1.I.IC AI .I.OVS; K 1 H(mkq R. SdlJubiin • ...., N. BallOC.InI';M de G.!nic A.orrUque. Ecole PoIyteebDique Fec\bak, 101' U -... , S...-iturl ...... Tbil pIper ~u~n tbe i..-.pono.nee of usinl an im.l~ simulation ... toe .. calcvb:inl rl~!t er.erJicI from dillo..'C.,;o" ctisooci.!ionl !hat "... ~ been measured us,inl weal: bum Q'IfI$missjon ckwon mkroJocopx (WB·lEM). IL cOf..a'''' I Compor'.lOn of .nti·phl-" bouodary en.'Iiu (,\""B) tlu.. we .. cakula,td u1ina: ""' . ... rUt bII, uncOlTe<:.td dillOC,ation dilWICCI. dissociations Wf"'C1Cd by the ilOln>p;c method of Cockl yne. l OId di$SOC:i.,iOJ\S ~rtd ulinl a 1'CCCn~y \lcveloped VlB inut,c simulation pro,..."... The raul" of this comparison iOld~I1e ,hI!. for Ni}(AI.T.), =,10", pro~
for'r'f'B can be IS lar,:<: IS 2~. Mcnover. 1hcy indiea,c ,h., th«c cornelio", arc dlfferen' fOt !he (III) and (010) .1Om.ic: pi:l1lCl. These obserYations IOUtm
.11.1, ima~ simula,ionlllC nceded 10 dt,e""ine pfllClx vaIlItS of these o:ne
~ I melhod for verifYinll rile ~ aM fou r fold ",U!!ln. IIIll1fe obttrYcd lit onlcml ;,"c"""wlic IIIoys. Compari_ be ....... n observed 100 s.imula1Cd imlll= for Ni)(A,lT.l win be pteW>:ed
(10,00 •••• ) (II
PHYSICAL METALLURGY OF
INTERMETALUC COMPOUNDS: Poster Session Spo"sored by lhe TMS High TtmptrtJfur~ Alloys /md Titlmium Committees
See '1'()ft1!!' SelsiON"" SectIon of the Anal Program for Abltrac;tS.
Wednetday, A.MJP.M. October 23, 1991
Room: 2011212 Cincinnati Convention Center
Organiurs: R. Darolia, GE Aircraft Engines, D. Miracle, AF Wright laboratory, and Y-W. Kim, Metcut-Materials Research Group
M'llrili. Sci . ...., EG ... Cue Wale .. lIe .. fVC o.~
•....,. OH
~ 106
AND Dept.
U.iv e~11.
Odomtl1io. lod fr"",I "~ bcbav!o, of "" 'trilll • .., lip ,r.e .... I, ."ccltd by die impOsed "1U1 .. T1t.t 1• •rodtICtiOll of • o>OtCh 9'001...... byd",lIa\i • •onl il. I."'' ' .. h i.~ "'., " pir.."",I, red.c. lit• • ubleque., "Ds il. d... ,ili., a.d
a,..
~rinl. ", . uri l il. I. pal\it~I .... uperin,ull cod""ltd "" .I ... i .... based COftlpositu will be _i"'li.lu~ . I. tdditioa 10 mOl'C "'"'" .
"".,.m...
pre";ou. won: 011 the def""""i",, .nd f,oe'." af briul. . .mri"".
lIos..... no"""l\"" by NSP·DMIt · '9·5' l26 ...., ONR. (lOdO • .• .)
llI£Al<
QUASI·BRlTILE FRACTURE m,
(10,.0 . .... )
Sponsored by TMS Mroumical Metallurgy Cmnmitw ASMIMSD Flow altd Fracture Committft!
,to
W~ln ..day.
TIt . ...,,1 . . o f • It,"" of ~ ... aJ. . . _lt.utaao of btl",. .... h ...."u J. n·4I .t.: .1.1 . dnto ...... hb 20 ... 11 Tin ..... _12' roJnfo.cod vitb. 10 _11 n, ••• ro,., t U4. no. .ff.... of tboo •• lnfoH_nt ..... fr. ~t~ . . ........... u , c .."t opoD.l..q dhpl ... _~t , . u loti ........It ......10 ...110"'0, ••• u _ l nod. tbo co"tr&o tlJ\,
Toughening Mecltanisms
A.M.
Room: 300 Cincinnati Convention Center
Session Clurirmen: S. Suresh, Division of Engineering.
University, Providence, RI 02912; Vandetbilt University, Nashville, TN 37235
Alf UIVUTI(l-UIOI! or ,.TI(lU£ 10lIO mcruu 1M ~VAIIC£D 1Il'TU!ltTAl.LlCS iEl"rolCED WITH DUCTIU "lI.n:l, · v. O. :I<>",ljo .nd S. M. L. '.otry. KcOo"","ll Douala. l ..... ~. Llbo •• tort-o , P . O. to" 51', Lo~I • • I!O 61166, J. t. v ............ .... on.! l. O. l1uhh, I)o'.tt_n~ .. r l!o. ar1. b Id.~co and HJa.oul I..,J ..... J.." Un ..... I'y of C.lJfor,oJ.o , ... kel . " CA 94110.
..,1.
of n t t , ... i t t'""&l>on1", --.b.n1_ ... "-"PIal ..... ""'" lin... el .. tI. ft ...uro __ .han l •• ..,.j.1o. potenthl for 1..,.<_1,,& fr.etu.I ..... &!>n ... ", lntllnol< on 4 .... J .... l. ",..,HUeodo", vill b. 4 10<:"0 .. 4.
-n..
·~ .... <"b
.""""ctad 1ft ~ . . . ,,"" . . ,h. HI)(; 1"".po nd.n, a . ... rch . n4 I)ovdo_". ~r"&r_ (IIOS • ..,j \II1I.I) ..... 10> p .... """... APOSR CO" . ..... r49620_90,C·OOlO (IIOS ... 4 SKLIII) and UOSI-90·0167 {lTVlt and lOR,.
( 11100 •.• . )
IIITUllt'1'IOX 01 • SCUll DUt.OCATUIJI wIn . f;UI;I; II ..... AIII'~ I C MlIlY , T _I 1 .. " ..... J . t. ""ck. Do po'",,,, at "eblnlu) Eneln... tln.r. Vile UnlnnitJ . l etf In... . CT Qe520-215T
n •• tn .. tbld •• IMP tor c••• ~d • • 1.141-"1: .U.... 01 • oen.. dh l oculaa In tho yle ln U, at. _ III c rocl< ...... fo,..ullt~ tOT both. n . I-lnflnlt•• "" • flnlt. I'ne.h c •• ck . TIle . e n l ..
•. . .M. ~
(9 ,00 ••• . )
U""lT&D)
10lICMlNIIIC Mt;CHA~ISHS I~ UITUHIiTALLICS. _. 5. 5tolo ll, Dtl',uteont of H",cdoh b&lnn,'n&, . u ... loe. Pol,U
""n,
< _ _ n" off ••• n ••••• ct.v • • _Iull .... 01 for .ttlo.... hllilt u.~.n~ .. ot .... u ... 1 opplicotiOfto o. I ...... _ •• ,~ •• • 0 ..0.' .... r . . lot...... IIovutk.I ... . •_ •• 1.1 . . p101(l<1 .... o f th. . . . _ " h •• ~u . 10.0.... . . . '" loe~ 01 .d.quo •• ducttllty. (o . . . blll., ...d f .. euro tou.hn ... . 'n .. n, ......... oe problo_ . . . . . ..,..b40 .. , b, 'I&u"',,, on.I._oto ouoth \ o*" ond ... ,·.. U •• u . ' .... _nu "Ill b. 4hcu ... d In .hl o .evlew. Ttohnlqu. . . o . . du."'" 'n
'.o~ .. II . .
.. ,.t.1 ... .lIleld. . .
_d.ft ••
thero
I.
an .bnar.. 1 ... ...
~POnnt.
'11. 00
.b.
c r.ck pI.... . TbU Iud. to 0 naB'U'" 1 _ t o r ce e1a~1 the •• .. It ""en .ho dl . loeUloR II loc.t.d on .M c •• cIt pi .... . H..... ver . •1Ie abDon.1 ...... eoopollen •• "" I ..... to.c. 41 .. ppo •• ta. a. tltotroplc and ilotropl e ..dll . TM 1 _ to.ce .lonl t h. oltp pl.ne hoo the ..... , ,, . . .. In UOIrOpJ . ..dl. _Hb an e ttecUve Ihur . odul.o . O . .... II In Ioo •• oplo . .dl • . The .nllot rO» .tte.t. oal, the . 'I"Hude 01 t ... . Uoldl.. . TIMr coo. ot odUpl e dlol .... Uo •• • 114 pollib io l . pll . . U ..... tor br ittl e fnctu., .HI boa dl • • no.4 .
btu.loo or .... ru"lto to loU" CUDII. or "-"
d lolpcatlgDl .Ub Ipdc I .Dd
IJ
.uck . -Il l .lIp be • • • • 1Id
Support"" by .1Ie Offl . . o f 1 . . . 1 Run •• b . (II ,JO •.•• 1
CREEP CAVITATION IN FRONT OF MODE I CRACK':
11.1. yyhona Hi a fIG Jam" C. ~ . U. Mlt.,jall Sde_ Progf.m. Dlpl,lm,Il' a t lA ech,nielt Engln,e.lng. Unlll ...lly o. Rochule •. Roc/toIl'e •• NY 14627
C.Hp m..:nanlsm is IotInd luIllblt 10 llllsaibe .he GI'IIlltioft p h _nan In f.on . o. Mode t cra.ck in ABS polym." II .. III II olh., kinds o. p."IclI ·IOUQheno-d mat.,jals. Th, Glwl\y <;110..111 wtll'tlrt • po"io;Ie at I I t.... partic'l·m ot.i, Int,".cI ...ulli _ hydtol.allc lenllon bu1 ,h.
TMS Fall Meeting~9
_....
of eaviCiq IiMms 10 nMd sIIIat WftI. A proptr combinalion 01 hyOroI,.1k: *,11oft and .... ar linin • .p.N ... aI>tpt 01 .... c.viIalion zon.. Tilt I hltlding .1Itc1 01 lilt etyitiu on lilt erICk lip plays an lIIIpot!, nl rOIl in IouOIltJling. HOw....t. uYitilS IONI\Id ~ erl.llng a.r ptallie _ may h_ all arUhltkln(l ,"loCI rlducls lI'II toughness 01 lilt .... !11~. Tilt 01 plnide liz, on lilt ea'tlt.tic>n pI1dentd _ _ wi! be
~.Iion
In_...,.
"""*"
' WO
.n
01 ,40 •.•. }
rUCTURE TOUGHNESS Of SI~'TElt£D HIGll SPEED STEELS ~ITH DlfFfJtE'fl" CARelDE 5IZES: r . Itul"", Dept. of ~. h ln l.d Ena.,. Na,aolea Unive .. l t , of T~, . ""a..,Iuo~.h' 'MO-21, Japn, T.~lshlda. Dept . of IIKh.. lcal £/11"', N.-.u T... h"lo.l Co l lel~' ~.... ~ .. ~ .h l .. ~IO, J,pan . N. Tlujl1, 5o.n,0 S,,",hl Steel Co .• Lt d. Shi ka&l -ku, lU ..jl~.hl, 672 . Jap.n F,.""r. lOIIlhne" tuts .... " o. rr l.-.l oo.t ",II, til .... polmt bend ,,....I..nl "Ith fa.;: • ..., p' K rac:h. It II .... 11 ~ ....... t haI _Her .Iu 01 ....,0,,", phase pt.. ld. ,e...,,,Il, , .... It. in hI,her Iracl" ,e tOOl,h"en . lIowever. t he o~u ln.-.l u h .es of ftacure t.,..pn" .. dec'"",sed with , ehdn, thl ClTbide lize . The heft trett... nt t o COll tTol tilt ,Iu of c .. blde ",, 'tlele ,100 ,nfluented t he 'Olu_ f nelion of c. ,bid. pt rt lcle . Both of the hotoTl (.iu .0<1 voluaoe f "ctl on) haY. to lnri. "nce th~ fracture touahn e .. . In the ... t e , b l l used , t he volume f,acti on ..... to be the ... 1n factor tc ccn trol t .... f ue tu,. tcughness : th e fu e tu .. toughness incrused "Hh r a du c hi the .clu .. e fractic n . nco fc,"",l . fe, utl.. Ung fr. "ur. IO"ahn ... .... he , e the eooab lned e tl ... t of tiU and vol....., froc-t ion wQ' token iMO c"""id.,,tlan . wu p,oposed .
RECENT DEVELOPMENTS IN THE ANNEALING OF SHEET STEELS m, Con tinuously Annealed Steets: Metallurgy A Sponsored by TMS Ft!1'TOu$ Metallurgy Committee Wednesday, A.M. Octob er 23, 1991
Room : 210
Cincinnati Convention Center
&ssion Chmnnen: V. Leroy, CRM, Rue Ernest Solvay, 11, B-4OCO Ucge, Belgium; S, Satoh,. Kawasaki Steel Corp., 1 Kawasaki-cho, Chiba,260Japan {.,lO •.•. }
€mc:" OF
OI.iRI!IC COIITrJ."UOUS A!IlIhLU"G 011 II£Cl'A'!CAL 1J."Tt;!lSTiTIAL-ntf.£ SHtl:1' STUI.5
CIJ\BIJRIZI'~
~OP£RT ! U
or
II, Ki"8,,"' II, 1Ia.. """to. S . H.. bi .... l o ",d '1" . Inoue iren , Stu l lIuetrc!:' Laberater; u , XCbe Ltd •• Chuo~ .u, Xebe , 651 J.""n UT) sheet ' Inh .ra r.cutly u.eI.... r, due to r edoeRd/or .be, '!"he .trbon CQatec~ of c.r,,"~ri ..4 otnh i s ccr.trolld by ,he ~_itian o r clrburisill& .t..o.p/lon, inhiol 'tile cr Ib/C .'OIIie ratio i n t he .U~lo atld l h. ccoli", rate In t~.1 I.;,me.l int; Inttuthla.J.·r~
i"....,.
~rocell,
I" ~~
• .• .
C,uB IDE OISSOLUTION AIID PR£CUITATION IN I NTUSTIT IAL-Ft\££ STULS DUU NG COIITlHUOUS AIIHULlNG: S. hto~. K. 0 " " 0 , T. lato . O. fl .. ~h,o t o . N. UltUll, .nd ( , HI . hl .... , h ... u kl Stu l Cor,.., .. I" • • I l
•. •. )
( 9,~O
uc:unALUUTIOft 0 ' InnsrnI,u,· n n 11lUT .fUI.,S : !l..Q... ylhbm.kr , 11.( . Ilo tlOC:iII . ·...4 C. l'ro ..U , CSM, !;Oldea . co 8D401 I"t.... ltll l·,.... (IF) . . . . ls loa • • •~ . Io ~ ~ .....blll.y ."" .ood IT 0. .. 10 . u 1•• &1 (or con. I _ . 0"".&1"" .114 1_ ..... Ubl.y '0 ... . loU ..... II b . . tl", .n4 ~ II....... 1'" """tI................ 11... (CA). o..UIU, _ , u""lu • . 101 .I0000&'' ""1 fat.ou Inn .. ut • • M " .... 1 _... of . _ d . . .. bUI., In II' .... 10 h.wo b . ." dec_ntd • • h . . .at • •"to thu .11 • • 110y l"l do . . n .. JIb ... 4 Tt p l', 1.10 u • .,....lllution .nd ........ d.... lo_n . .. . ..... ".ll .......... _ . ~.I , ru"H • • h.....11 •• th • • Ic.o .. ...e ........d prop. nl .. of h.... lly .014· tOlled Ind a l ..,Io • • 4 Ca (IU· C. 100 to.) rr .... 10 ... rI.d both .. • ' ...... tlan of Ito• • 111 tolll", u_rotur. and o Uoyl ... . .dUI ...... To buur un4 .....n
fo .... b llh ,.
lis ....
rolou • •" lh. !I... I .lcroot. ·..U ..... .M ~ oll od Iftd CA .pa.Lt.Otl • .
1 9,~$
In .he " .... 10, .trOll. c .. ~14.~lo .... l nl d .... nto s"c~ .. Tl . ... IIlo aro ""ded t o .. &biU.. C .. uTbtd .. I .. 1>01 b.nd. ({h.n of .... I . b•• huy _ ,o '~T oll t n l cond ltioni . Dhaglu . !on of •• ~btd . . prior to f ull " .'JIt.llIlOtt .. " dl .. ,! ort t . d tho . . ehonl u l PT<>pUtiSS 0 1 . nn . . lod 11 .. ssl., Coaru ninl of <.rbld .. I n hot b.nd. p, ovld . d
tI'...
'UPI'''U'',
.........
JS' <01 .
of
•••. )
urECT or
AN!I£ALING COMDt'l't0t4S ON taE M.ECIlANICAL
PROPERTIES 01' CON'!'INUOOSLr ANlfUJ,!I) EX'I'RA-LOIf CARBON
S'I'£EL ODN'I'AINING 71: B,J. I . n~. I . C. Chill, J, B . lw.k • S. I. Ch.n9. RIS't, 699 1 .. IIIho·oon9. OOn~ l w.ng Yang. 544-090 lonl
U, inq the optical • t.all, mi. , iOIl electr o n _ic ' o scope, .nd t he inte en.l fetction tel t er. the .a.phology •
di at ributloH of fine pr tcl pitlt.a du~ to th~ va r iation of no t . olli n~ • • nn •• lin~ condit i o n, ace ill.. e 'ti ~ated.
'then the effects of both the pr.c ipitatel and . ta.. in ,o lu tion on the . .chanic.1 ptopartie, I te n'ile .t
1l 0,~'
.. ... )
EI'FF.(:T OF PRECIPITATE SIZ!: AND DISPERSI ON ON LANKFORD VALUES Of T, STABIl.IZED INTER STIT IA L.P REE STEE LS; U SybIJuQlnian 101 . Prikryl .nd B.D. Goulin. M. M.n.T Unl'. TI'ly. Ham'lton. Ontario ond M. K""h. 00£...0 I"" .. Uamilton. OntaT'O. C.nad • .
.ho,..Iot,'..;..
'The oiHp d,aw,,,, of inta .. tit'"1 f_ ....1••tabili.ood with Ti. ~b or Ti + Nb .... m t"a!!,
hem"",
nO ,so . .... ) UrEC'l"S OF I1TEilSTITUl ATOllS A~D M~()AUS E O~ RECIIYSTALLtZATIOW TUTVRE Of LO"f'CAlIOK AL · K1LUD SHEET STEEL F O Rlt~O TIlROUGK CO~TUUOllS U~EALIM G: l!.J!11.!!!, ~ . Ok. .otc , Su.U oa o lleill Ind •. Ud., l· a h oo-.I>o, ,wa •• u kl. no. JArAll For
t~e produc t Ion of deep- dr .. abl t I!\HI tlnllC~' InDullnl prOCUll . dlfrt r tM t)1lC4l flHI ~na been deve loped. 10 llIe pruenl
I lui IbrOlllh conof ~lt ..- l o. c"bon .t...!y, fo r the I. p,ovu ut 1ft dup 4,.. .bl1ity of Ihe l o. ·ctrbon AI-killed nU l . • h i c h 10 Ihe • • J or pr Oduct tb r o up the 1"00.1$ . the effeen of I nterotHl.1 .tOlOI and I'In on tilt rec r n hll h.t\ on tenu. have been I 'udl ed . AI Ihe r el~iU the I.pron.eftt In r ~v, l .. has clolely been re l ated to the decr ease I n the tctol IIOUot of Inte ra tlUal 1to.1 In l ohllon .1 the rec r1l talllulion t e.peratur e . There Ulsli the opU ... lin con tent to obt .ln a hl l h r - va lut . In t e ... of cutnute fortatlon b ~ hlv _ lo r In Ihe hot r ol llni prOCt li .
{n,n •.•. ! ~f.UlUR~)r.H
In ur tt hh1~h .. { tr) .... 10 bl " h.n .u.u IVlI J app l1l<1 t o pr ...~f" .... I ... . "" . . ... 01 . _nd utu .. ~ ~1 contl_"a . ""uU....
ao, ""
.ho.
H
I ~H HICH IO ~
fO e PllOOLr. U G
NO~
~ r.I~r.
PEEr
k i LLE D SlU T STEEL~ n CO ~Tl~ UO~5 HH~ I I~G: • . ~I.i"d ., 5.",, 1 I Coil L.b. l ip pon S "'~ I [o rp .. fUH n. Chj~, k. ' o~. u , l i t ,tn II' O. ~ippo. S tee l Co rp .• lc r uki hi~~. Miro •• ta III II Mi l'''''. Sl ~e l Corp. PQA~nLE
" r..
f or p r oduci. t deep Jr ., uh le lo~ C ~I k;lll"[ ~.ce t S ltel~ b, t he Go ntinoaous ... u l' . , procu •• t . ~ 10110" '. , .... 0 ut t" " ~. 't .I il l r ,:u i .ed u u <>lv td : Ih te(. lInololi.~1 4ul>lo.,.ul. 10' d ) '0" ~ li"1 o! I ;"~! pr od" CI ., lind ta l I" . Itlp" r ~I~'r. .:oilin, o f . 0 1 r ,,[la d h~nd ~. hl~ .. i ve .ct.l lu 's ic.1 i •• u lic a t i on> ~ . v" hOIl" cor ded ~ul r e.,, ]Ii ", i n th r. n~~ do- e l"p.~"t. in "onli. ,,,,., .nn c. I'n , ',,
6O--TMS Fall Meeting tu~er l t.n coi ti. , . I ~ pr~c , potU,on
ludi., to th e c.oM •• ni., or c U".l it~s a nd ,n ~ o l r"llud buds h •• • be,," C I Hifi~~ in tM" 01 'he c h.i u l co.po.i t ions uc ~. s C. "" ud ~ I ~O "lut •. I ~ e pro '. t ic. 1 . , 11 lutlll, .• hIW e ~o "fj ..ed Ib ~ ~ " "d i" ~h~"
4e. ( r i b~4
STRUCTURE AND PROPERTIES OF BERYLUUM AND ITS ALLOYS I: Beryllium Processing and Properties
Ibo , u,
Spol'lSOred by TMS/ASM·MSD !oil'll Nau:kar MRteril2ls Commitl«
SOUD STATE AMORPlUZlNG TRANSFORMATIONS ill
Wednesday, A.M. October 2.3, 1991
Sponsored by TMS Physiad Mewllllrgy Commilt«
Wednesday, A.M. October 2.3, 1991 ~sio" CluJimum:
D.1. Michel, Naval Research laboratory, Washington, D.C. 20375
J. E. Smugeresky, Sandia Natl. Lab.,
(1 : '0 •.•• ) 'UAIIIATIQI IIIDUCUI MOIPIUUTIQI : Nt OVUVIl\I Of ~unllDT _ TlIEI»T : 0, ' . '-
(9:15
Session Chmmren: F. Crcnsing, Brush Wellman, Inc., Elmore, OH 43416;
Room: 2.15 Cincinnati Conve:nlion Center
Powder Metallurgy Facility, Materials Tech Div., Livennore, CA 94551
' .".J
A.MOfi:PHIlAT1ON OF:r.r,.AJ UtfDER:U MeV z,3< ION BOMBARDMENT. F. C. Ch ....•• D. F. PedJua lind A .1 Ardra'. *DeputnIen1 ~ _et1alo Sck""" and
UnMnIt)' ~ cauIomIa. ~ ...... ~. CA 1IOO24· 1W$. U. S. A.; IlIIet"'-.1Id Cft"lmIet 0tritI0
RDom:211
Cincinnati Convmtion Center
.
',
(1:)0 •••• ) IlULTII ' UFET\' 01 InYllIUM ....~ Its AUo'rSI R. D. 0~ .. 1s. iii'.' tnyiro .... n. . 1 Affal n , Ir~ . h Well .. n. Inc. , Cle.Yd . nd. OH 4411~.
k .yll1u_ .nd I... ylll ...·.on •• lnin. . . , a .bh a'a lu« . . . fully ."d ,,'a l y f.brie.tad •• In. . . ,hod a . n~ a qul_". vbi t b . dh . .. ,0 Induot.I . I-h YII. . . . "ndud • • .-..:1 u" ai r pollution "muol .... u ... uha n du . . . . .Jo • • OT fUIH" • • y b. « u • • d. Th. u h h. ndl1nR Tlqul • .-en •• of l>"111i ~. and buyll1u.. eon •• lnin, . . 'erlal l vHl b. ou.lined 1n tho pu ... tltlon . (9:00 • . • . )
CHARACT£RIZATIOH AltO CONSOliDAT ION OF GAS ATOIUztO 8[RYLLllI4 POWDER: JU'lU E. H.lllfet . lIvren~e Lh,....,.. HUlon,1 Laborl ' tory . P. D. 8O~ 808. (-352 . ll.'....,rt. U 9~~S'O. II l ne lou of 'l" U _ " " ~rylll ... powder Olltl l nu f ..... c_.-c l. 1 source III •• beetl ( ~In ctfrlzed. SOlIe ~r Ills
~n
hot lsOHat iully ,"55e4 •• ~ .., lYn l~.1 Po"OptrUes . nd _Iero· Hruct~rt det'''' ' r.ed. PcwUr she dhtr lb:lt lon . f lov rite, deMlty. lurf.CI , ..,. pcIIfder .,. pholC>gf . Ind cP\uiH.., -.e .. utHIltd. 8y truwlnlon e"uron _ lco"O~~oPY 0' botb pOWde r end consolldiUd St. Seo putlcl. ,Ize ,nod distribution Vl!n c".~red .nd t,," eHeu .....ellon lul p.-oPOnlfO ""lr ... 1.... d. IIort perfo,..d under tile lusplcn of trw U.S. Deputmnt of [roer gy by Li.....'ne. lh,....,rt 11111011. 1 LlboTitOTy wnder tontrlCt W-14D!i- En 9- 48. (9:lD •.•. )
(9:Wa._.J
CRYSTAL DIS ORDERINO UNDER ISOTHERMAL VOl.UME EXPANSION : li~:1JI1 IUtd Sid",x Yip o.~nl of N..c:leu Enpeerin"MIT. . IC. MA 0'21l9
UPID !lOT ISOSTATIC PkUSlJIC or BEl't1.LlI,tI POIIDtI: C. suu.." , Cr.D.lnl • • ",. h Wa ll.. n . I n.c: •• fl"" ... ON 4)416.
"Ir,
110. loo .... l e Pr ... lnl (HIP ) •• chnoloU u . . . tiM, to~.utu'a ' 0 dcn3Uy ""t.1 povd . ... O.noif1utiOD occur. by • e_bi""tlon of pl .. ,I, d.fo .... tlon . eTaap p'ocu ... . . nd . In_ lipId No . [1O . . IHc Pn. . I"1 (IMI') U'" hi",.. , , ' . . _ IUTU . nod .lIo r tIT dve ll " ... ,ha n eonvenrlonol HlP to fully d,.o lly po""' " 1II1P of ,"""o •• d _'orla l . can produc. 1__ proya d _ehonl eo' p. opartlu vb a n e"-Porod .0 conven . Jo na lly HIP'd .... rI.1. 1IIa eflaeu of lunF on 'h .Iero-otrue' ,,", a rut _ch. nle&! P'''portlu of bar~ll! ... will b. dl.eu •• e<:!. ~ nd preolun
... t.....
(10:00 • .•. )
ISOSTAnc.u. n USIMC or BEU1.LI ~' II. Da tun, f. XI . o,,", G. lIonajl, IIlnl-"l. Non f ar.OllO Mtalo I ....
I n. 4101< .ill. .ut... p'H lflc.tIOft ... .. ... a • •be ...,...tar 10 " . .al" •• a re oh. l nad v lth uhtNt. , .".11. " u"I,b 4X1l1ro , yield . ... nlth ) l i D II'. . . . .be " ....otio. ) 1.)1. noa . . Un. of "" ' 0 , •• u vith thla t iM of berylIJ_ I . brlal'"".
c-,.ctd .... eoflOo lldat,"" by • CIt- HIP ,.""....
>
(1I:101._.J
lHE OBSERVATION OF QUASI·CRYSTA{..UKE SYMMETRY IN FeTi aad CoTl DURINO ~I.ECIltON IlUtADIATION.INDUCED AMORPHlZA TION 0 ... _ Xu ,· w. A. OIkIu.' M. MaId" IIId P. It. Obmoco0' 0Ikpc. ofMaJe •. SdtrI« IIId EnBin«rilll, North_.m UDix .• IL
"",.
..."
E_.
"MaltcrIIA Selma: Dlllislon. Al'j(IIWI NIIIoIIal UborMory. ArJonne. IL
Durl ... IrndIatlOfl--lnduad amOqlhlzallon or jQlmncwlic campaundt, dirr...lio" pone .... which catt be In .. IPfC' .... lillie (ofll\ll.ioa o(quui e~ have bcm obM'\IOd bymMylnvarip.o .... Thll pMnomeDOQ II lflvaci&ated in F.TlIUtd Con by ClWI!lnllll cleclIOII dJrrt'KIioa plltems and HREM ~= durillJl amorphiDtlon. The ~ or pttVdo tcn. rold 5)'111mctry it ~llIcd '" llt.e Cl')'ltalloillphic ortcnlllilon or Ihc hlilllI cryscal and II mOl. promlnen.ly "rver! In .bedllllCllon Ort,," CII O:>:wne u ll. Thi. woti: "illpponed by NSF DMR ·U 02487 and DOE W.J 1-1 09.ENO.38
( 10:)(1 •••. ) l'lOl'!ITlU 0 ' " POAII: Frl .. G..... lnl •• ",. h lIa n . . n . Inc . • 14 n O ","at Pona •• lIy. . Sooo.h &d • • tl_n, 011 103~1~ .
'r""..01 ... tadll.ol OI1 1Ia. buD d ...eloped to f obrleo ••
"p."-
pond bar,ll1_ f_. no. be.., ll1_ fo ... ba. 0 .. oPPO'Ut d .n_ .lryof 10% to lSt o f ..... P. ' OM .. t .l. Ttla I DdI .. ldlial f ..cd" . n I.na. . lly drc. llT In ohoJNt a" ... 11 COIUlacted. "'0 .... n . , c_no. IYI. _.1.0 •• hl& • • nd f • .c t .... , • ."..,.. tI . . of ba r , l11 ... f .... v III ba pn.anco4 • • "d tho ..... 1 .. co-par,"" ' 0 p.oportta. fo r otba r , .......... 1.1. and , 0 .. t _ t l ed .od a lo of f .....d uta .101o . (llll . . . C. Sklliarn, B'u.h 1I0 11l11n , Inc •• UIIO.
daY.lnd , OIl
A naw lnot.u. . nt l roda of buylll .... . I-no wit h a 01"'_ KYS of 14 kd. lo~ o~ ld. con . . . . .nd ductllltl .. a q .. I~a1an' '0 .lto. . of a 'rt,1e.~r.1 .rada boryillu. . . car Ill . h .. bean de yeioped . 'nte
TMS Fall 'udl . and .Ie . o+yldd p.op~.H u of • nl" In .«WHnt sude of t.... yllh... are p.uant l d . nd coop.nd thl cu •• antly .vdlabl l _ _ roial Ino t
'0
(11,]0 p.IO . ) DIIlECT OO!1lARISON OF VHP Alll> HIP 1+220, C. Pok ..... , St. ff Eni l+ nu r, Bn. h liell .... , Inc ., tl .o . o . OH 4)416. Tho ".1>10 _
bu • •
h",hp~ ~ .lc. l
. hapod port hu
hhto.ic o lly
bun IO&nufactu.od by .... cHnlng f."", • vlcu'" hot p... ud Ingo •. The lat u ' p... . ha ve t>
h. .l . ph. . . . Th t. pi p..... HI • • v a .. tho ..... p.oe. .. u with ... phau. on . .. . t h ], prop ... y dUf e •• nc," o,tolnod ft"'" .he ..... pr oco. . u .
TRANSFORMATION KINETICS IN SHAPE MEMORY ALLOYS I Jointly Sponsored by ASM Phase Transformstion lind Structures CommiUm; Wednesday, A.M. October 23, 1991
Room: 214
Cincinnati Convention Center
Session Chairman: P. H. Adler, Raychem Corporation,
300 Constitution Drive, Menlo Park, CA 94025 (S']O •.•. ) lMPUCATlONS OF 1lffiRMOE1.ASTl HYSlERESIS
COtmWL TO I'II.ODOC"T
I!NGltfI$RIH(l, I.Yt...IlIr;[ia lay
AIIhout;h
m-r of tilt ............... h!'*lui. efho::b ... ,., 10 be dofllltd I/Id .... nufoed ....
one.
.... , ........rut pn>doJly .x,.nden, "pool ill Mn""'. W. cons;der . . . . tl'JlOl of dovioe: Oay low ............... Finally. ~)'SlaI h)'SlUlil. Ni·Ti-C\o oIIoy. wilb. 1(J..15C h~ ond Hi·Ti·m .no,.. "';111. hy""";' 01 ...... 12OC. do _
......-..
(9,05 • . • . )
Universal fUiuttS of I~ lrinwc behavior of muuftSilk cr.nsformatlon. in botb thermoelutic and nOQlhermoclulic ")'Items are described by borrierleu heteroge ...""5 nuclClltion involving defect inte_tion. on 1.... 0 lize scalel. PoIency distributions of pn:-uisting and autontalyOc:ally-gencmcd nucleation sites dmnilllte the dependeI>CC of transformation on applied driving force. and govern ihe si~e dependcm:c of transformation in boIh smlllI particles and mocroscopic: polycrystal •. Time Ikpendcr>ee of IwrierIess nuclalion is ,ovemod by intmacial mobilily .... hich iJ thermally OCtiv'led II 10.... veloc:itici. n.e mobilily hu been di_tly me .. u~ in .ingle· inlCrfou e~perimen .. in "'ape memory alloys and s/Io>.o
Meeting~1
wnl .lao be .... de 'es"d!ns thl underlyin8 cause. for the .n.... lou. phonon ch".ctlt is tlc . . . r.vu lcd by recent fi r .. p.inciple. caicu iot ionl . Re . . . rch pot fo ... d under the l u ' pi c. . of US 00£ by LLNL under contract W-H05+I!NC+4S .
(10: 50 . . .. . )
DAMPING AND PSEUDOELAS11C!TY IN IN·11.., Manfred Wunig. Uni~. of Maryland. Colle,e Pari, Mil. 20742.211-S Twin boundaries ,,,,,,,lilly contribolC sipiflContly 10 ,he dampin¥ of • lwinned cry"al. In an In.19.1 .r.% T1 . inlie crystal. rhe damping aives rise to ... lO
• .• . )
TIlERMODVNAMICS AND KUrnTiCS OF FCC _ :> HCJ> MARTENSITIC TRANSFORMATION IN Fe·Mn_Si_BASE ALLOYS. ~ Dept. of MI.erials Sci . and En,," . NDI1hwesrem Univmity. EvanslOll, R. 60208·3108. Thcnnodynomks of FCC -:> HCP manensiric transformation in Fc·Mn-Si·base alloys ihar exihibil sIIapc memory effcct hu beat worl:ed ""I. The composition and lCmpcnl\ll"t dependence of Ibe magnetic contribution of Ibe Gibbs energy hive betn talteD mlO accounl by """siderin, the composilion dependence of the mq:netic moment and Ibc Netl .empe... lu,e. The effect of vari"", alloyinl clements on Ihe IDIlneric contribution of !he "Kldn, fauh energy .... iIl be discuased. A n"IOdel to cakullte ihe erilir:al drivin, f"'" .... ill be prescnred. The Idncrics of fonvud and reveJSC ...... formationJ hive been srudied by ~sutiviry .nd DSC techniques. The effccI of thermal eyelin, on Ihe tnnsformarion lCmpetalureJ .... ill be presenred. II is found thaI the defects such IS dislocllions, vacancies ~ lenen.1cd durin, forward and uverse transformationS. and Ibeir conoenncion inauae com:inuously with thermal cyelin,.
ASM &: TMS Distinguished Lecture in Materials and Society 11:45 A.M.-12:45 P.M. Room 221 Cincinnati Convention Center
Dr_ Pranen Chiiludhari T. J. Watson Research Center IBM Corporation Yorktown Heights, New York
Sp~(l1cn:
Topic: "Materials Science and Engineering in th~ 19901"
(9:40 • • m.) TRANSFOItllATlOIL 1l1UTICS IN n MlAI, SlJII.IU.TlONS, P c CIIRR, T. Sileo, IIotori", Slauatl..... lI>.tHut. of Unl~u.Hy of CoaII.,..,Ucut. 5..., .... ,
OISEIlVED IN COtlP\.ITU '""" S. eben, Cent. . to. IIotuilll Sd....,e. 1/+136. CT 062"+3136
U. I ... lb. Vot ..... a..... r..bedoHd Atooo 110.- NI+,u poteatlols _ 1Io1ecular Dyua.lca . i.J.J..ti .......... have obaervld bolb tht ...lly laducod _ . t u n l11ductd ccharon _rt".alt1c nuc l eation aJ>d , ...... th proc". . u, Includl ... the to ... tl .... of Hlf+ac~Un& . . ~te.aHe vsrl..,U. "dl.c"ulon ot tht kinetin ot theu proc....... ill be p~untod, and evldence in the ton of ca.pu ter .... In .. Ill bo . bowa.
(l0:
I~
. .... )
Pl!ETlIAHSfORIIATlOO Bf;llAVIOK OF THE "1+"1 62 PHASE: L.E . T.nner , Law-nne . Liv" ..... . N. tional L. bo • •• ory, Lho..,r. , CA 9'~~0 . nd S.H. Shl plro, Brookhovu N.. lonll Loborotory, Upton, If"I ll913 TIle BZ{BZ) plten. ph. . . . o( s hape ....ory IIIOYI u"""IO pn.uno+ t o ..... <1on • • rue.utol ch . n~ u . . thoy cool ."". .d • • h it ...... n. Hle . n n. fo ... Uon . _ratu . . 110. . These o U.ct ..... Hnked to tho .n..... lou. l of.ontng of the pattlC,,'" .tonl Ve r u a c"" . tlc phonon branch th., f.cllit . . . . . ~e d ispllch. (. hear) proc e .... of the trand o ..... Uon . nd l . .d directly to tho hoto rOle n ...... nucleation of .hl product . .. tendu. 11> h ptOlent. , lon win d •• Otlb~ l uch behavior for the HJ+,u 82 ph... as obtolnod by the C010blned lech+ niQuu of c onve ntional Ind hlih+ru olutioo t u nn l . . lon eiec tron a ieto. copy end <1. . . 1c .nd inolu Uc neuU"" Ic.nuini. ~on cl ••• lcll hOletOi.~tOU . nucl ea tion viII t>< M l c"",,,d. C_nt.
WED;\IESDAY PM CONDUCTORS FROM HIGH Tc CERAMIC MATERIALS: lHEORY AND FABRICATION U: Conductor Processing Sponsored by TMS Shtzping lind Forming Committee Wednesday, P,M. October 23, 1991
Room: 201
Cincinnati Convention Center
Session Chmrnum: D. A. Korzekwa, Los Alamos National Laboratory, MST-6, MS Gno, Los Alamos, NM 87545
P"'\IWIiC_,..,...... ...
62-TMS FaJi Meeting
..... _ i f ..
(2, 00 1' .•. )
PROGRESS IN BULK HIGH T. SUPEROONDUcroRS, Sunpo lin, ....T&T Bell Labon.wriQ, MIImIY lIi1J, NI 07974.
hi'"
The diIc:oYery rL ~ ~1On off.... I JIOICI'IiaI for siJnfficMl IICftnoIocicaI applicaDons. and has cali...:! aa;ne ....1Cd ucICCmenl ond upJolign cl ~ ond ckYdopaIenl. For praelic&l ""iii: 1ppIl. urioru. 1M IfrSC maICri&IJ IIIovld pcqesl ...nicieoI currall-<:an)'inl capo. bi!il)' in hllh fields, lIId Ihould tilt fabric.1ed 11110 desired WpeI IUCh u wire<, 1OtOids. or solenoids. While some of lite w.em,1 mataiaI, problems hinderal !be RoHI drOll _ani II1II;0:.. appticac!oa .. l ipificllli ~ .... aevcnbdc.,. bem md!: in boch !be cri.li<:aI CWIlOd ond fll:ncrion areas.
~ powusinl oonlrob !be ~ and lite dlerniwy 01 !he phUCJ in !be ... pcI'Q*IlIClOII, III ... IffCltlin& imponanl p&I1IaIe
ma.-s will be ducrihcd.
wirel IIId supnoondloetilll (l:l' p ••• )
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IfiGH STRAIN RATE BEHAVIOR OF REFRACTORY METALS & ALLOYS U Sponsqred by TMS
Wednelday, P.M. October 23, 1991
Rzfrru:t.ory Metals Commitw
Room: 208 Cincinnati Connntion Center
Session CJuUnnm: Andrew Crowson and Edward Chen. US Anny Resean::h Office. Materials Science Division. P. O. Box 12211, Research Triangle Park, NC 17709
TMS Fall Meeting--63 (2, 00 p ••• )
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OU'OlllloOTfOOl OW:: ...... I$HS .11 TUMCS1'E>l $.NQ1.I C1YUALa III .... t.t..STIC: IIll'ACT PPPIIIDIT$, II . .1. .!'r . o " II . II . lieu!!.... , It. 3. 1Io .... l~ OM P o • . i l _ n , . 1. l...,. l&llhtlc: "_ueh
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Ilf&in at hiJh mes. Adilbalic shear loc:aliUlioa hu betn ob$eI'Ied in IUp·tlle shearin,lUU inlllcll.niol>al Kolsky . . relatively IWTOW lheart.nds ... formed, followed imrnaIlmI)' by CIWIJOpbic: fntCltR. {4 , lS 51.1.1
SHQCX.!NDUCED BEAmON SYNT1mstS (US) OP T\II'IGSTeI·RHDI!UN n.rTEJ.METAUJC COMI'OUlo"DS;' A. Ii. Ao;InnI. ~ 01 T ..... II EI Paoo. El ....... IX 7996L _ H N 'IbidbInj. CETR. ...... ~ Tldo. Sotorro. HM
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The drnamic and q..u;·sWic ICnSilc properties of warm footed lunliSWI shCC{ ml'cenal ( 1.0 mm chick) have been Sludied oyer che ranllc of IempcralufCS from 22'\0 400" C. Dynvnk leSIin,"'u performed u$in, u plic Ho!*inson PfCn ufC bar (S HPBl wIIich produced strain rllcl on 1M order of ~ s'" Elevaied ~ure IeStS ......re Khiev«l by hulin.leu samples wicb hoi Pi, Some dyn&nUC cesllnl WU performed ulin. ampre"lon SHPB 10 enl\J.i"" the aniSOln1p)' of lU,h linin RIC COMtilllti"" behlvi« of lilt. malerial. 1be llldini behivK;r of !he INlIerial uncIer dyrwni<: len$iIc lQI,cIiII, II analyxd in w:rms of !he c...stilllli"" behl";"'- cklermincd by lhe compcus.ion lCSIinJ. $conn.", elcc!roa rDcroK:opy ...... used 10 ~ and COIIIJUI lhc dynamoc: and q uasi,"IIDe fncturc modes and morp/IoIo&icl prod"""" al variouo lut 1etI1pI:I"IIIft Estimates 01 the dlOClile..mlde 1I"IMilion rcmpenuru ~ mode and .re~ 10 I....... previ.ou
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MleM STLU N un ncIPtRTlU AIW MOO!L111C Dr " TUIICSTlN ALLOT IN COKPR!$SION ANtI TtlISION, C.L. WH . . . n. C. H. Lo"" tln. on~ T.J. Hol ... "I .. , AU l a", Toch .y..... Inc. , 600 2nd St ... t H. E. , HopUn. , MIl lS3U . " •• ~.lun _ ft!,k.1 bu ..... trh .t101 hOI b. . n t . . . .d .. !train " , . . "P t o SoI0 3 .-1 u...!e. tontl",. .M c_nllion " r OOl> and ol.wI . .d t • • , . . . . . . . . ' 0 . . ... u tI.u 16)(1 ,. ' or <_o.laon . p • • • ll ol '01" "o ro e_hhd 00 ..... lu ...... n aU oh.. M . of tb. . . aUD)'. A Jo..... ",.-COOk . . udal _01 b. . b . ... "p. . . , . 1, duol..,.. f or , .""1",, .n. l o_ to u ,h o f .... ..... tal . , ...04. ~aTboa o f . " diu .D
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DVNAMI C Tf:NSILE TESTING WAII.M FORGED TUNGSTEN : Quid H I ... i'. Ind MIr), LtBI. nc. UnivCI"$ily of Calif""".a...~ 1...i..a'"ll"lOR: NIItionlI LaboollOl}, PO Bok 1108 L.-:W2, Uvmno:n CA. 94~SO.
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8[HAV10I AlII STAAIN UTE EFfECTS OF TUNGSTEN NIl TUMGSTEN ALLOTS:!.. L lIIrJL P. S. FolhnsbH and 78454. An 6 . T. Ir l), III. lAIIL, Lo, Al _s, IItw !lexieo
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(1 ,101' . • . 1 DYNAM IC MATERlAl. PROPERTIES OF REFRACTORY MATEUAl.S; TUNGSTEN. TANTAW M AND MOLYBDE· NUM, L. C. Chhab'ldu and M. p. Fymjsb Sandi ' Nationll Lab<>tltOries. Albuque"llX, N. M. 87111
In 1hi$1Illr.. recent teclutiq_ developed 10 determine dyn&Jnlc awaial properties of refrll:lory mwJs It scnin tiles flilr; 10 1010 sec·l.nd 10 ~ oppn>aehinl250GPa btcreportcd. Spc:cifiQJI)" ~ IC>ChniqllCli have been used 10 obcaia \be COUIp"CS$ion behavior oIlImp!eft, lantalwn and molybdenum 10 SIIUIn of 2SO GPa.. 60 OPt alId 20 GPa, respectively. These ClpcNntnl$ hive aU.owcd IlIcdetenniftllioct oflempemY!e. pn:UI.ft and ~I rate dfcas on the d)'lWl1ic yield ilre"Ilh and lpall wcnp o(tlK .bovc muu:i...eclmatcrials. Scva1I! combinations Q/ Iotdina. relQl,c!ln, .nd ul"lloadinl cycles hi"" been employed. The '~SoIIIIIi of these experimenll will be di"""sscd in delail.
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KIRKENDALL EFFECT SYMPOSIUM ON INTERDIFFISION AND PHENOMENA THAT DEPEND ON NET VACANCY FLOWS IV, Multicomponent Diffusion Sponsored fly lhe ASM-MSD Atomic T,.ansport CommiJ.r« Wednesday, P.M. Oc:tober 23, 1991
Room: 201 Cincinnati Convention Center
S'All SlROI6TII, fUClUlE
Invu t lpt lon af · th. spall strl nllt h. str,l n rUt uns ltlYlt)'. and
fr" t ur. "'hav lo r of puN W, II- Rt. II· Nl· ' . Ind II _NI _r . _Co h. . beln per fol"M4. Pure tungshn wu fl br inted usin g ~r ..ttlll1rl1 Ind s tOJdI" I n I col. IIOTk" coM l t ion. All-I. powd.r ..Ullurl1 11 10y (sing l l p/I~.. s oli d oolutiOll .1 10), ) .nd II_MI_ r . or 1I-1C1- F.-Co 1110),5 wen produced by 11",,111 """.u sl nU r l ", af I I_ntal pov6ers ancI " IItI I" In • S. lgM coMltlon. Sjlall It 'tn,th ..n " r_u, obtai _ in I . , -tr lc I. po~t t lSt, showed In Incroul I n spall n ...ngth f, a. 0.4 &p, far puro
tun9stlll to 1.1 5/', fa, 9OII-1111-3F• •n. COIICllr'III, mingo In t r acturo .adl f .... cluUi. (for purl 11) to p......l llintl' Inhr,ronultr fo r the IlloyM un_. To nl )UIU the st r lln ,nt nnsltlvH), ot thl ll- buH .1 10)" 1M MVI cOIIPf, re
Sessum Chairnum: A. D. Romig Jr., Metallurgy Department, P . O . Box 5800, Sandia National Laboratories, NM871&S cz,oo , .•. ) Iii H"ul,!HXlIl'OtIENT SYSTr.HS : ct • • flmlx. lIClIaato' 1Jn1".,oIty. r.cult, of [ ",i . . . r l ",. " . . Ill"" anu.lo. !;.nodo. 1~'T!lDI,ruSIOif
..........
THE INFU1ENCE OF TUNGSTEN COrmN!'. SWAGING AND GRAIN SIZE ON THE VISCOPI.ASTTC RESPONSE OF TUNGSTEN HEAVY ALLOYS: K T R''I1S'b, ~lIIofMeo:hanlcaIEnpnemnl.1belohnsHopkino Univcnily. Balti~ MD 21211. The intlut._ of UlnpIUI COIItenl. o",..,na. .nd jp"ain 5IK ... the rapoouc of IwnplCfl·nlcktl-1ron a1loyti subjected 10 hi", rateI 01 deionnalion has bt:en in""stiplOd ~5Inl compression and IOrIional Kolsky bus. Tho now sm.ses IUStained by ~ ..... lerial5Ire obse .... ed 10 be 11rOn11 Ytloe.-depcndellt over IIrI in rales rIII,ln, fR)m 10"" Sfe-' 10 7 X 10'Sfe-'. The race sensicivilY ilSelflppcarslO be inO..elll'ed by lun"len eon"'nl ' od dc l rec ofpriorl ..."in,. buue ..... IObe . lmDSI independent of tun""," jp"ain oize. M.III~K: anoJ),.CI ,nd microhardncu
"""Uuremen,, were performed 10 SlUdy m~1II"II1 evolutiool willi i_inl
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Intlr. .. oceu," wh." 0"" of ,h • • olut. lpoel .. dltf . ... .....,h aon up ld ly th.n tho oth .... rOt p •• ctp'eatlon undo • • hi . condttton. elf . . ln dll!'IIf1 ... lon. hov. b• • n .uuUt. d . Th... ... eu.ln.d .nd ....... on o.qu."" .. u p lo • • d. . (2'~O
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C\LOJl.A.T10~ OF L"'TR.l~SIC A..UXES At.'D KJRXE!"'DALL VEl.OCITlES FROM INTEII.DIFAlSION A..UXES. Scllool of Matcri.als EnCineerina. Pwd~ U.;;~,·;",,.
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A~ lnalysil bIscd 011 an atomic mobiIily modcllLai bem developed r..... !he calcuillion of inlriruic diffi1SX>n lI""es 0( all dilfwliinll ~ in mullicomponeol. soIid·soI id 01" ..apDl'm1id diffusion couples directly from I ~ """'l«l", cI inl<"fdiITuo;"" ftu"<"S. Profiles fli in.entiff........ ftuou _
eakul.ted direcOy from the toOCCnlrlcion profiles withoul the need lor Inlwilhsion coeffICients. The lIIa1ysi$IUpplicd 10 CellCRle profiles of inmnlK: ftu. es and Kir1<~ndlll ~elociriel in thediIT"sWn 00"'" of .. lectod ternary diffusiOll couples reponed in the liter1I\lJe. The: ,wlle' lion of che lIIalY$;1 utili . es: selected I1l1iO$ of llOII1ic mobili liu of lhe diffu $inC camponon...
64-TMS Fall Meeting () : oOp . • . ) COHI'UTIll SIKI!LATIOH or olrruslDII PHEIIOHutA WI1!I KIl\KElHI4U. V.1'TIC~ SHIfTS AS All ll'IEGIVIL PART OF THE A1'rtWACH: C v Is" '''n .n~ R. T. n.Hoft. llf,l"'u,..nt of IUtubl, Scl~QC' 6.n,I ..... lnl . Un l-vu.lty of florida. Calnuvilio. Flodda. llf" crlption of diffu.ion phe .......... h . 1"Pllnod both concoptually U Innl ... l" dlffudon .... h.ovlor of the individual ..... ie opocio. uther thon tlla Int. .diffuo1on bd.av !or of tho . y..... In thh proj a ct. c0-v<>ur d .... ht:1on of diffu.lon In IIIIltl'c","ponent . . .I·lnnnl" coupl . . 10 curhd Out uslns coltpo. IUon doponcl.ont offoecho _.n J""'P froq""""i" of the ato . . as tho input \:.i_tic p. .aao t o r. . In conJuncUon with other Input. tho . 1... htion ylalda: (A) U.O cotlControtlon.pon.tro. cion "rofU . . , (b) the cOOIpodtion p.ths : end (c) tho h.ttic . voloclty profn. produced ••• con.oqllenc. of the Klrk.ndall . hl£< , that occur throustJout tho diffusion zone . •ruI...,t Juot at tho "risino l ""ld Into rhc.. Tho un of Lntdndc kinetic p.ro. . .. n ollow. for tho "vorvlow or diffu,lon over 0 eoapoo ltlon r a nr;o of iMuur. and thue fore hu p'odieth. capobilltl .. ros.rdlnr; k i notho in tho< ronS"
.nd .... th . .... tlc.Uy by reCordnl
(l:20 p ••• )
THE I NTRI HSIC DI FFUSI VITY OF A Hi-6\Al -(tCr-(\Mo ALLOY, Y90n-Ho S9n, J. E. Morr.l, Dept. of M.t.ll urqy and In.tltut. of Mat.rial. Sci.nce, Univer.ity of Connecticut, 97 N. Eagleville Road, Storr., CT 062693136, a nd A, O. Rosig, Jr . , Metallurgy-18l0, Sandi a National Laboratories, Albuquerque, NM 81 185 The i ntrins Ic diff us ivity of an n-coeponent alloy ia a n (n)x( n-l) propertyaatrix, that'can be calcg l ated by coabin i nq ~tga l di tfgsivi ty and Ki rkendal l . ar ke r aoveaent data. Thi s procedure was follo wed t o obtain the intrin.Ic diffus iwity of e four-component a l loy containing NI-6'Al-t'CT-4'Mo, To begin, three diffusion couple. were prepared and then annealed at 1200·C for 100 hour •• Th. a utual ditfualvity wa s de t e ralned us l O9 the M.guar . root dif fu s ivity analys is M on concentration profi l •• that were aea.gred by £PMA. Marke . ~v... nt and por osity we re aea.ured with an 180ga analysis syatea. Th. r .eglt . obtain. d will be dis cussed, especially with r eqard to eource s and . agnitud. or . xp.cted error. (3,.0
p •• • )
lUlU Of DKTAlUO aAUoIIC[ I N IINDUSTANDfIIC VACANCY CORREUTION I N BIIWtY AND T!JUIAIlY SOUJTION: J S KirUldy.
uncrs
Innilu'o for IUtori.h Re ..orch. ""lIuter Unlvordty. IWoUton. Conod.. US 4111 .
~~lj~1~~l~~1~~lf'~::~~~';"i~'-';:;;!!::;;:'::::"':':"'r:"::-'":"~ I
c U ecto). By prior IdonttH· olioy . vocancyeor .. lotion .t~ro.coplc r .voulb lHty In ono can a n i _ at tho 2 _ 2 In d l ffualon of t ho .U07. A'A*'V a "" ... ·,·Y ropro •• nt.t:lon. n.o 10t •• r I . .da to. ,I,.. r _ and
I::;~:~l;::'::; dariv.clon of Manni",', cornction to t ho I' for tho Urundatl . ff.cr . Tha ex.and"n to ternary . olutio"," 10 dev.l .. p.... Th. Klrk.ndoll
Dark. n r.latlvoly . fC.ct in liquid 10lUtiOIU llal been ,""euutely doc....,nt.d '0 .n ...... d on tho for.,ol",_ .. Ith froo vol . . . . . ub.tHurln, for v.c.""I . . . h .. b..n undo ..aun .
III
TlIL~AIt't
ALLOYS:
C. J. Ksul-.... nn end I!.lL. Itva"".on. IL 6020•.
Th&
v.lid only f"r blnory two·ph . . . alloy.. In on . ffort to ou.nins pha . . and "'ClooU t .mory dlff.. oio,,"l Intouctiona . II. find th .. tho upono"to of tho ta_rd p",,"r 1,,,0 ducdblns th. kinetics of the rIpenlns proc'" otiSino11y pradleted h7 I..'l ffact"", by tho p~ ... n.,.. of a third ch • • lcil compo_nt. _Vir, t "" ...,IUud.... r tll.. o t:o"P"tsl _ r law. ne o lrarod by tho oddltlon of, third o1 ... nt to. blnory alloy. In addition ..... find that tho upillary ,enr;th In. t.mory .110y 10 I function of t"" intordifC... ion <<>efHeI.nt. of tho two cOlOJlonont • .
"0 .....
METALSCIENCEOFJOINING VI: MethodologIes Spcmwred by TMS Solidification
and Physical Metallurgy Committees
Wednesday, P,M. October 23, 1991
Room: 200 Cincinnati Convention Center
Sesswn CNrimum : J. H. Perepezko, University of Wisconsin, Dept, of Materials Science and Engineering, Mad ison, WI 53706 p,oo p .• . } All OVERVIEII OF THE MtNlSCOMnU./IlETTIIOG IAlJ.II(:E TEClIIlIQUE J'(lJ. II!:TTABILITl' ~I:AS~~.£Yn;: P. T, Vl.~oo. Sondlo !!otlonsl Labor.tori . . . F .O. 11<>_ ~ 800, IIlv. LillI, Albuque r qU
TIle . . nhe .... t . ."'.ttlna balance technique h. . ph.d Incnued popul.dty os • _.n. of quantifyln8 the "" ... bllity of s older/ flu~/"'u _tol .yotr.a. By dotcnrlnlna (I) tho ...t,h. of the _n lacu. , II , t~t hoo rl n n OD 0 " "PIe I _ r OOd Into . ba.h of l older .nd (2) tho ho l,h. of tho _nhcul . Il, th • ..,ldorfflUll into
n..
'es'
(2:25 p . •• )
EFFECTS OFCARBON ATTHE SOLDE;R·INnRI.1ETALLIC 11'lTUFAC!i' : .L..:il. Moo.iL.1L and .... I. CctIoer fe. Ad.- Mooeriab. i.Mo'...n _"'Y L..boraIary. I CycI
Suo...,.,.
Mtul o,idllion Ius IIwOJ'S bwl a prcbIao fa lIWIy mJderiJ>J appIica .... oaIill-v.)ICII (.... ion ( _ in .... indUSll)' is Typt R (toSirI) and Typt RMA (nH.in .. ildly"",i.MOd), which it . ,.... of .."..,.,_. AI!/IooIJII dooompooenod CU..:1addod PC bQordo and flI
p,50 p."..)
IRAZDI> NIl> DInUSI tM IIIKm«l Ql' ~ DlSPDISItM S'I'RIHl'n!tXII aFI'I'JI: P. K. s,..·.'Il. SOot l*t.a 1 1'ro
r;li~ Diapers lon 5tc~
Copper """"i.~ of a pure copper ""'trix with ~ ..... 11 _ t at' (0.7 to 2.7 veL") subrnieroacoplc Al 0 p!U"tlcl es . The .... Udal is fine <;Iralned and it .esis tA r"",fyltalli~~ti(:tl. ~t e l evated t.eIpIIratu", ... inc:lndl"',l tl>:>H ~ !or btUI"., with sHver a,,~ gOI~ baS- braze alloys. Probl ..... an """""", ... r ed In tho brazi"5l of GUdCop \lith s ilver ba$f!' b .... w alloy. , due to e=i~ diffusion of s ilver alllf'l9 tho <,Jul n bOundaries . Electcop' ati"5l .. Ith COpper or nid
Il,U p ... _)
GRAPlifI'E.METAL BRAZING FOR THERMAL APPUCATIONS' . F Mjch.el Hmkinr Smdia Na1ional Labonuories.. Albuquc:/llue. NM. Various pluma facin, ~n1S an: heinz ~ Mel fd>riwa:l1O supporl tbt ~pcrimen1S of Ihc In1Crn>.~onai MIpetic FIWOn Eneqy pn>pmI. They lypit:3lly consisI of PIlhi!e ales medl1llieally ~ rnetllIlII'tieaUy ibthcd 10 metal substralU. This 'poper .... il l di",uss !he bruin, 01 isoaopic and pymly1i< ""p/lite 10 OFHC CIl Mel a1wnina-disperxion -Jihened CU coolin, plaLa/lubes with a Ti filler metal. The ave Ti c:ooRilucnt pcrmiI:s dUm wettinJ of 1DPhi!e willi lhe fonnation of • thin TiC IaI:Iion .. )'C<. Joinl design i$ cri1ical sinI:c gnJphite and Cu hov<: Jarge lh=...:I upansion differences lIIal pn:xIucc IIi&nificanl raid.,.) bDCtIlS
A,·eu..
suMequen11hmnallll:l"fonnance as crxk:s popapll!: ihn:>u", die lower S1n:n,1h vaphit(: member. The eff..:1S of ooIid Mo and """'Pliadl CIl interllyen on Rducin, Lhesc bruing stn':$$(:S - . . - eumiJlcd. The S1..ty mncluded !IIu OFHC CIl $ubsInJlCS wilbool illlcrlllyen perlonned bcu. PyroIytic gnJp/liIeOFHC high hell flUlI .......Ic$ wen: 10$00 under simulaOO plasma di$l\lp1;(:tl. ,ondi!ioos and sUMved swi.,;e be.1 fluxes of 3.0 kW·cm-2, .... hile wmpanbledilpersion lIr<:n,lhened Cu wnples failed ncar 1.0 kW-cm· 2.
c..
TMS Fall Meeting-6S ""'tuials SCilliCII, Off iCI or .nic hergy Sciences. Dept. of Energy ijPHIer cont rlc t DE-M:06-16RlO IUD. () , 40 p ••. )
OEVUQPl.jENT Of' JOINING ,...AlERIA!. sYSTEMS FOR CEI'WoIIC~lAL JOINTS, Slirh>g I('M _ ""M Ii. Sat..tfIIn. GTE l_~ ~II"'. "0 s,t.Jon RCI . W.. ~m. ... A ons.
..""
JoininG ctf....a 10 ......11 _ _ • giIieII . . . . . . . . lAIIitIIions lor 11""",,"11 _.lIIies
--"~J.
01
~ariou. ~ I~ .
bruing II _
10 _
..
~.",*",& '" j<>WIIl """" .. 1IIg~ • ....-:. t ...... f.~ ""n.omic 10-.,. con 01 _ I i 111ft. ~ II _~ ....... , ...."'ocn. In _I'll ..... """" III joift. ,);eon nil,. 10 In _ - , . .... ",U"", lor ""'" ~'I"" IppIIcIIion& (&5O"C). Eac~ jDInI
_IIUCI\I.
F,_
. l . .. COiling ,,.,.l0\III. ... ~ _ "'u'lIIo)'I. .... ~ balld onl .... ~ 11...., _ _ . ./1111 ... jr;WIIlt,Iring ~."" .. ThiI _
mc.. _.mi -1'iOII""""- :·....
",1"' ..... _ '\IIf*'1I1IW!IIOOOIoOI' "" . . ~ 1111111 1II jDirII. mic"to ........... 01 c,.,~ iNII'IacH. PI_ _ 01 "" iII
14 ,05 p ••• )
01 R.IP CHIP JOINING: y C MIm:tgr;. IBM EuI FlstWll flCiliry. D.'4SK, ~. Hopewell JIIIICOo!i, NY 1")3.
hi'"
In flip chip IOChnok/o fib. I'b-Sn IIIIdcr bumpa, u11cd OII. OR ~~.pomcd 01110 circwar wctllble repr,mulkd lite BLM (cwaponllecl O..Qo..AuJ willi bcIh the BLM and the IIIkIcr CVaporIl«I "'""'''' • ~ ...... The clUps OR bonded 10 IlUbsll1uC .... hich has cennlnlllon vias 01 MoCJrfl*l b)' pluc6 Ni-Au. Join"'g ;. done '" • belll"ttnw;oc UJin, • ftIIIIlCli~1lCd TOIl .. based fllll: in • nilJO&ell 1lmOSpIIc~ Since theC4lan: in U NM .....Y. irupoc:6oo il i~ble. Thererore 1M proc:eta musl be ''tobult ~ "This IllC:lCOmplilhcd b)' talin, utreml: care in "-!lin, and 0I1he """" AnoCha" IICh-IIIII&C in m&in...u.;n, wclilbilily. i$ tlIIt joim... _ ... atIer m&rIuf~ with no WC1IIbiliry problems due 10 Wctllbility Inlin" proc:eJIin,as il affCClS wen"'g.nd IIIkIcr ~ will be ~
Man.,
\011,_--...
11,10 p .•. 1 Of SCAIIIltllG tIlIIlI(llllG IUCItQSCOPY TO STUDY CORIlOSIOII MO SUESS ctlRROS IOIII'H[MlM(M. H_rclll. P lckeri~. Dept. 0 1 !loItlri.1s Scitnce • EII!II"ftnng. ""nft Stote .;versity Pork. 'A 16802 US(
Sc&Mi ng tWIIMHng .icrG$cGPY h I !lew 'n([ ~r'wl t~hniQ"" ror tlte study of electrode ,nd corro.lon processe., betll!l the (irn . icro$CCilY . lth la-. l tu CljNbility for _hllliqu i d sy.t., .ad sub.. _ter to Iil" ,.. unge or s"le. The principles or S111 .tll be presettted llId discussed, eSpKi.lly In terM of In .ppltcn lon of In_s i tu ilJWOllS and ultn high wKu" (UIIY) corros ion st"llies. Including ~.I Ii.., stud ies of .!'tOdi c eCHIr d issolution under ,IKtrode pottn! i.1 control .nd no-Ic se.l, dl0rpllon of bydroten unde r UIIY. $(HInl0r, Intlm.tlon. l Coppe r f\ll,jlld,tion.
~uocllt l on
and Ut ional $Cience
11 ,)S p ••. 1
AT!JCIC fORC£ MICfI:OSCOfE STIlOIES Of ElECIIllXllEMICAl PROCESSES, Chen I nd Andre.- A. ec..irth. ~P4 rt _nt or ClleotiHry. University of Illinoh, Orb.n •• Il 6]SOI Chwn . h li ~ n
The AtOllic foree lI icroscope (Afll) cln pro.ide alOll- reso hed Insight Into el.ctrochNl u l prO("enes occwrring in situ . In th is t.lk we dhcuss under-potenti.1 deposition (upd) and strlppin, phen_na. Upd of A9 or Cu into ~u{lll) su rfaces yiel d. different strucwrlS In dUf,rent electrolytes. These different structurel Cln be rel.ted to differences in specific Idl0rpt ion of electrolyte onto the el ec trode surface. changes in .nlon-.nion repulsion. Ind differing degrees of charge truster between IIKtro l yte and .dU... Stripping of depo$\ted It.., occurs pred .. in..,tlYlt step e1lges. wIIich grow b.d until the deposit h mo.ed. 1),00 p ••• )
14,]0 p".1
MEOlA.NISMS OF IH'ImtCONNECnOH POGIATION IN VUI PACXAOINO: S I Iy, IBM T. J. W_lc_b Caller. P.o. Be. 211, Ycri:-.o Help!$, NY IOSH. C. O. Woychlt. IBM Olrparuiort., P.o. Be. Il003. EMiooa, NY 1l7tiO.
_ci0t4. _
In CIfder 10 form reliallk iI....COiMCIioou eidtcr a ~ 01" ~ rypr. r;L joiniIt, proce:sI is UMd in ~ ~ 1br. JOlid.._ rype r;L joWn, poceas i$ _ 1 1 UMd 110 fomI iIt... cIlip (f'lM \e¥d). This pnx;cq ..u;.,;dk. thelI""",,*,+,LiIlua OI'~joinia, ptOCCQ, (It ~ 01 bod!. c. ....... ktncIiq. • -..cd bIJncIin&. 111 liquid·lIMe.Pinin& " . . 110 f _ ftnt MIt -.:I kvd iIt..........."1ioI'" n:fto
PARKINS SYMPOSIUM ON FUNDAMENTAL ASPECTS OF STRESS CORROSION CRACKING V: New Capabilities in SCC Research Sponsored by TMS/ASM·MSD Con"osion & Enrnronmental Effects Committe! Wednway, P,M. October 23, 1991
Room: 302 Cincinnati Convention Center
Session ChAimum: R..H. Jones, Pacific Northwest Laboratory,
RiclUand, WA 99352 (l,OO p .•. )
u.s.
OI'alllIC tu:IIoUU
,,,
APPlltATlOII Of COIIII~(O SURfACE A/lAUSIS/COIUIOSION Cnt EJ PU III[f(JS TO STR£SS COAAOS IOII CRACKING R[SUJICII. D. H, Bu r , C. f . IIlndhch J r . Ind • . H. Jon ... h clflc /Iorthwst llbontor)', Stchllnd. IIA 99lSl. All ultr.-hlgh ncu'" transflr syst"" cOMIcted bet_n • nTh " 'jlKtr_ter .nd In .1.ctl'1Kh...lul ull, hIS been used to obhln U undlrstlnd lll!l Of tM roll1 of vlrlo... qTlin bo~IIdI'" l ..... rltll1 In U r.,s co,""slo~ cricking. Surhcts dulgntel to sl -.1Ile g.. ln boundlTY cClollJlolltlons ir' tnnsterred to thl co rrosion Clll tor elK trochnlc.1 ..i$WrflleM.. The cOlll)osltlOli Ind ch..h t.., of tile resuitl"" surflces Ire then onll),ltel by Aug, r eloret ron sPlctrosC09Y, ~ - ny photoelectron IpKtroscopy or athir IUrtlCI .. tliocis. Ft ,"1 ond shin Ie •• H .. I $pe<:IAUS. 1",,1I"t14 or coY,red .. Ith S, p, Ar. In([ otlltr I I ...nts, hlVI bit. 1l_1 ~ ,d to dlt, ... lne the roles of ilq)urit), cOficent ruto~ s Ind chilli ,,1 stltts on .. ul disSOlution ODd pushlt lo", on([ to det .... lne thl r.tll lnd IIK hul SAS of tllpurlty rtllOVl1 fr .. lh, surflct. () , 25 ..... 1 AN ENVIRONMENT ..... C(U. TRANSMISSION ElECTRON MICROSCOPE : I.!!I. ~ T.C. LN. 0 .1(. Oow.ld. J.A. E_ _ H.K. e;rntoa ....... 0II>Inrnent of M"orill, S"tnc. _ E"II;notring _ 1.4",,111. R.... fC~ LoborliO
"'fI.....
An ........·....1.... 6 a11y·""""'" ... '-;_nul ~I ~ .. - . • • _ _ 0.11_ In I J(Oi. 4000 E)( titcuon me.1>IC0IH. With , ...........on ......111 ctII ~ ~ _~ Co _ ••• " '"01'< ................ tion. "" " ....Itd c~""o" in rrCtOiCtIIC",.,. that occut ~ the int..oction bItwton t ooIicl Ind • ~ ....... "'''''_1. etl .... bttn PI..sur!..., 10 70 torT wlIh H,o;o'lor ......,"""" with no _ _ .. ."..". on "" _o"",,*~ . Wh ~ lilt _ , to ... ..... - . pM""""" wilto nl'dtooon g... ........ _ . _ con.trucI "'" ... ~ c.II c .......... ton'OoWt on
n..
n..
'D
Plluntod.
1),!oI) p .•. 1
UYl ROII01At SCAllII IIIG (l(CTROII " ICROSCOPY APPU£O 10 CQaROSIOli SIUOIIS. 8rend. J. litt le. _in l OcunogTlphic ... d AtllOsplltrle k s..n::h li60uto..,. Stennh Spice CettteT. ItS 39szg-5004 Thl eftv l..-ntll $t.nn l ng ,Ioretron .!croscQ91 (£SOI), • new dI!el~t In S[II t echnOI'!y, utes I uniqQe second • .., elect ron dttector to 0... hi gh resolution I..gu It pressures In the rl"9' of 0.1 to 20 t orr . . At these prenllreS , sptti ... dllrg i"1 is dlsslp.i ted In t o .i gueous ",.I_nt, enlbHng d irect observation of nonconducthe .. terilis .nd si-.! !tllleOus collection of _'1y- dlspe ... he JI_uy dill. If ..ater .. por Is wsed .. Ih, sjlKl ..n eny j ~t. wet sMples Un be obse .... ed dlr«tly .lth\ll,jt dehydr.tlOtI. Ihe ESEII hIS been w\ ed to doc w..nt sp. tla l ... I.t lonshlp$ be tween .icToorg.nisr.; and l oc llhed co rrosi on Ind the II""nUI ca.positlon of bloftl./corros IOfi products ror seve .. 1 ..uh and .1I0ys exposed in I vlrluy o r condit ion,. 14 ,l! P ••• I
"
AN ATOWIC alMUUlllOH 01' THI! INI'lUI!JiCE Of' HYDROGEN ON THE nlACTURl HtU.VlOIt 01' HICIW.. H, L Ht/!!!Ich". "'" R. G. Hoaglllnd"-.
66-TMS Fall Meeting ' PaciI'ic HorItMeSl LllbaraIOly. AicNand WA ~ity, PuIman, WA.
993S2. ••
o"",,,. i,,,, ,. ,,"v i..., . of
WQhington Sl3tII
ThO. paper ptesents rlllUla dtsaIIing IIW 1nIUt...,. of II)dfogetI on 1M ...oIullon o! !he atomic: oanllgouratloflllrilh incte~ K. In !he e
,,,,,,,,,,,lid
wo,...
(4 , 4 0 p, I . )
MONTE.cARlO SUJLAT~ OF LEAD INOUCEO SLOW CAACI( GROWTH IN ~Si
""'"
e._ '
f.Jl..&IIII', H J H Hotoyd* .J J
~'.J T of _ .riall SdNce ard E. . . .ing,Cu. Wnl. , n R• ...". UnH...iIy, CIeotland. 01lI0.. ~ _ _ UII.. ~ , UnHd KircIdom-
. o.pen..... t
, Oep ....... '" or a.or"''''nie. l "' . .."'.. and M.nul_ri119 EnglnHl1ng , 01 HftocasIt ~ T)'IIf. t.In/Itd ~.
tInJ<""""
inct._ . . dIa._
L_. ro,y i......rigallon' ~ ••• , 1>O.. n lhlt 10.. "mpertlurt melrl"" paill1 !mpu'i..... iii, Pt> & Bl PfOIIIOIl "" ..Intd 10M! e
In~
'oquifId "" crKkln;,
a D (ItOWIh '11'
. 1 Inltifllldllltl le'Iels 0' K .ncI dl ..gel .... onodI 01 Cfar:khQ '""" ductile 10 Inlt'gll""''' bfll1lo lrK!urt. e . ..d on "'eiIIogoIlr on the probIbiIitlu ... cract< growlh In \Ne 1)'IIeIn.
"""'*"""
_ u lcUllted "OIl lhe """'_y."'e "'" t.,..""-uI, ...d l '9 'I""" u . ve I . I n I " ..et h. 11 . ...... lvc .
In . he lec.u re .... , , _ I co c~".ur n i n 9 "U. tI . .. . ...n\ o f ... t.· II .. '00 1 .... I. , c..-pound " "" .. ..... 11 I . ca' .... r i .i ng,
" eo" ,
n llrl d ing Ind ninourbw , i. l ng " ill .. dl .
p . • ,) APl'llCATJON Of THEJiMODl'NAM IC MODEUJNO TO THl! DESKiN OF DUI'LEX STAIN LESS ST EEUi 1 .0 .' - 1 ; _ . nII t:.l1liun M...rblo k;'_ Con...,. U"''''';'1 ol 104 • . . . - ud UMIST, 0 .......SOUr, MuchtsIo!. "'I JliS , UK. 1 ~ , 40
0;.0,,......
ABS'Tl.ACT:
Said'... ed tI>ci, dctl ..., , - ... _ 10 _ .. phu< f,ot\ionI ol I .......... , f,rti .. 'M _~ ill . .1Illoso ........ 5..... _!hods I~ booed o ~ th& _ w , Ni ~ _ Cr" 11101......10 an be ...., . . &Doll .... ol "'flit .... c;ombi ... tloao of _110 ... OIl .... ~ .. ~ .. pl>ue lllbilitia I. mW'ioompOrl
.uorr...
,1Jcc..
.....!IIod Ilaoed "" 10 "'ens!.. ..,100 of oho. modynamlc comp .... _ t.u b",," dc"loped for dUple. IIIln'" ,,"II ~Ic ~ au..- • ,,'lobi< CS4i"",~ of tho phue boll",," to "" obU ir.t4 for "., In ,"" 'UI< 1050-1l0.,-C from tIot "'lal ....1 compooitiOll. Colclllotior>o un""" 011 .....
"'''I'l ,
"""'po,..,....
O.", W, 0 .516c.., 0 ."'$1, 0 .516"'. , bol.f. ) ...,. ...... '01110 c:quiIllntod ud '1''"''''I00 I .. _"" ..",..00. ;,. ..... pooiIIooo 1M tcn>puI''''' ...d foil) enDl ol ","men, bel .......... lculltiOll .t Upen-.,. (3,0(1 p .... )
THERMOCALC DESION OF ADVANCED STEELS: G B OIJpo and O. GhMh, DepL ofMor. 10<:1. A Enl .. Nonbweltem UQi~,y. EyUUlon, JL6000S-
lUll.
"""'!aI.
PHASE DIAGRAM PREDICTION VI, Feaoul Phase Diagrams and Other Applications, International Symposium Spol'lSOnd by the ASM/MSD Thermodyrwmics pJwu;e EII" jlilril CommitttJ!
IJ , ~O
Room: 2011 CincinlY.ti Convention Center ~ion
Chmrmen:
J. F, Smith. Ames Laboratory,
Iowa State University, Ames, fA 50011; Philip Nash, Metallurgical and Materials Engineering Departn,.." , minoi. lnstitute of Technology,
p .... )
A REASSESSMENT OF THE FE-CR-MO-C SYSTEM, MatI HUlen IIId Cai .... Qill, Diy. of Pbytkal Me, ...ltuv. Royal IDlliMe or TeduIoIou.
5-100 4.4 Slodbolm, Sftdll!ll
TK Fe--Cr-Mo-C ' , Itent wu re&II5Kd . .Iller 'lrilk the Cr-ldo-C I~ b, ..... (_nDod, • .,..;c modeb. A DeW cletaipUoll of Cr.c(BCP\ wu etlilUled i. order 10 be oouitl.e!lCJ wi~b 1M IIIOdilled Cr-C .,..I
COIIP\ITUI IlULTI~
"IIASC
_UU.
DIAGIWIS
P'OlI;
1Io\JD1lIA.... I LI TT
AIID
"'LA STtEU IIITH APl'LICAT IOil Ttl T~E PI£Dl ctiON or MICROSn.\ICTU1IC IItCIWlICAI. P'IIOPUTI U . J ' "'", !b , lB'Utu,. for Un h • • • lt" B-.-II, ,,,,, C.... d. , LIS
AIIf)
A cOIIblnotJon of ,bu _ynu le T. ylo. UpIIUI Onl 1m tbe .. nner of lIo",1C for dilute l .on · l>Iile nltnl,n, Kl ll er "SII,,"nl on l ub - rt,ul . . .olull"" .odell for . .. oelated pUclpHotl ca.pound •• .nd I MIl - c b...CIIChod do " bl .. or InUnc ti on cOIn l den," , bJ",ry ond 'e.ury phUI dl., ••• • p.ov lde t bl "h' '""ltbIU for cOlpatoU ""o ll y rene.IUn, COIIltlhtlOD lAd "" h .., lNi.tltl o nl~, In re ~ brile .llo,. of t en or . ","pOIIU " . T!>eo. 001 11"'11 , tor ll~ ' r "ltb upliltru , dhcu , p""_l dl.,.,n o f the I>oIu> t or. t~cr " lib f l nc · twnln, provide accurll. o~ - lIne predl c t lo ", or neb.. le.l p.o.,.rtlu , J ~e "'dln,
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All oy, uu d in p, •• , I •• "" u. ". ll y ",u l'i ca.p""'" H"'''' . nd .~e bln. , y I nd . oooel l ..... tc ' n. ,y ph ... dia9. am . 'ound In <0lIl1'11., lon . " ' . u ... I I, I. .. I ppll ubie r ~ . "". 19n l" 9 hut Hut_ftt
( l , CO p .• • 1 A TKU)lOOYll.vtl C snoOT Of Tilt h-C. -v-C SYSTQI : I -J t... , Offiu of T. ~ " . Info. _ S. ....r •• 4 "' h.u ~. 0.. . . , Ito . . . . .... d.. 4 . h ... n h lftUi"'t . , • . 0 . .... 1 , Ta.;_, le , u; D, • • Le., O.p.. . .ftt of 11o: . . 1l. " ... .. ~""l h,i"". 1 Uni • . ,$.",,1 n l -14l,l4.u
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A t~en<>d,.,. .. i ~ d.. c ri~ l i.,... or rc-C r -Y' C ., ..... h.. buc cb l. i · nod by ."",blnln, " on.iHen. the noodyn. i. tedo l . fo r '~ I t:l bb. e n.." or v lfiou. ph . ... . A "~ . b .. o f co l cul . t od d il, _. o "" i ch . n of In . .. • u ' t e I ho .... 10 of In"""d . 1 i~ o .tI"u Ire pr u o.. Ud u d . "p..od v l ' h .nlloble upod"~"1 d. .. .
,I>.
(' ''10 p ••• )
PREDlcnON Of MAJl.TENSmC TIlANSFORMAll0N KINETICS IN FeBASE AU..OYS,!J.JlImIL -.I'd G. B. 0I11l11. Dept. GfMaterials Sci. and EII&I-, NMbwesl .... U"ivenli)'. Ev&r\SlOll, n.. 6020II·]101.
In ~o;t>inl the 1.bcl'TllOdyn&ll'lic;l of FCC -> BCC mattensilic IIUlSf~tlon In Fe-ha,e aI)C)'t, 1M -.neUe Clo."ributlon 10 Oibb. .... 'W)' hu been ~ • ..,ooed for oho Fe·Ni, fe· "'" """ Ni· "'" 1)'1Iema. A iIrp bod, Gf ellptrimenlll data for !he aclivllion enet'17 for fCC' •• , bee manmsitic nllClearion i. ~Ni, Fe-Ni-MII, and fe..Ni-Cr "'Ioys has been analyzed. The avlUiooi - c (Q) '1$ drivinl foIw (A&l doll in !he.., oJloys 0$ fouBd 10 follow UIc ..DUal Q-t.c relariootship pIOpDKd bJ k ocH'" al ;,. COMCCtioo! widt ibc w..tics r:I slip deformarioB r:I tolid 001"Ilftn",thened alioyJ. Tbe ~ ana1)'Jis abo "'paIS dill tile individllll ooIult. _ _ act .. bcrrie< 10 \he onter!Jeial ___ By i1IoorpcnIiBl tile Ihc
be pn:scn,td
TMS Fall Meeting-67 (4,20 p .• • )
CORRELATION OF THE MONOTON IC AND LO W-C YCLE FATIGUE PROPERTIES OF SOLDER JO I},'TS WITH PHASE DIAGRAMS: .z.....Gv.A. P. H.cke, A. F. Sprecll'r and H. Conrad, Mal4ri,l, Sdenu and Etl(ineerill8 Department. North Carolina State Uni" • ...tty. Raleigh. NC 27696-7907.
The manotonie .nd lo .... -cyd. f.till'll prop..tiu of 10 ...1\ solder IllaY' (bated on Pb, Sn, In and Bi) joinu were determined in .bur and were found to co~l.te ..eaton.bly well with the volume r..etion m the ~nr _dery phaM. For Momotoonie IGlilding tho. ,hu, modulu. followed I n m¥ ...... rule of mi:a:tul'flr, the ItTain bebrior • line •• rule ofmiaturn. For the flticu1 tetlta, the deri",d Co m n·Mlnlon par.meuu obeyed I li ne.. rul e of mi.turu. Good ~ment WI' obtained betwem c:orrelltio.. baaed entirely OD the ph ... dilCT'1N fur the allo)' 'yltem, IlDd thOR obtained frvm quantitiotivI mitTOKOp)' mulurlmenta of the volume fraction of the ncondary phaM.
,u:.e...
Thil rue,reb "'1' 'POIUOred jointJl by 0... Pant Elertroni« (Or. J. Dorfman , technical monitor) .nd by th~ International Lead Zin, Re.earch Orpni,ation (Dr. M. Kim, technie.1 monitQr). 14:40 p •• • )
ROLE o r PHASE DIAGRAM CALCUUTATIQrf5 l\'f THE DESiGN or Fe-T M-B ALLOYS . ~ till, N. SMllde.., A. P. Mlodowulk, ~l?Ulml!llt of Mlteriall Soeuce ud Eu~n_;lI4I, Uuiyeni ty of SUrrI!y, GUJldfold, SUrrl!r. GU2 5XH U.K., C. Small, Roill-Royoe piC, P.O. "So" 31, OI!fb,. DE28BJ U.K. PII!YioUI -..ark on l.p1dlyl(l/idi6ed Fe-TM-B IIIlOfi ( ..!!ere TM .n. lI!l.ect.ed fiulitiou Metal.) b.. lbo_a that ·lu.....; lu" metalmllriJ: comp»iteJ C&II be produced witil • hl,h el.. tlc modulul ud adequat~ ductility. To IlDdeIltaad tbe dletl of VU;OUI miaoll!uelurallealulet. il;1 a _ " to prepare model. alIo,. _ hick canWa _ell defilled propoItiolll of le/ected paill of phue. wilh .peeified campolil;OIll. To lhil effecl, pb.ue diaclam calc ....tiOlll 00 the reI""ut qU-'efIWY'Yl ltlllS _ere performed &lid blYe beIln UJt!d lo define I m'lri, of tell comp»itlolll. Tbete bare allowed u enIliltion of Ihe caMributioo made b, [II I £errilie. [II) • mUiealitit or [III} .... USlenitic ""'tri2., combined wil' tk difJeielit boride. p_1 i. lbe alloyl . EIlmiDltio.D of allOJI Iode:ted trom lile Fe--Cr- B, h-Cr-M.......B ... d Fe--Cl_Ni_B ,!lteml baa Confirmed lbe predieled plwe equilibri. &ad b.I abo defined Ihe role pI.ltd by tbe yu>o.a phalft COIIeen.ed in • 1I.ipiJ COII-.d!«liY~ 1IIIUff.
MOIl of,l>c IIOdvlelo .150coooain fetri .. , ... hio:h il .in u"lly carbidt f=. The .. ~"CI ,",ionl c.n be ei,l>c. intrJv.onul.r1y n,"'klted fcrri~ ",. .... 'carbide defICient", ( 1,40 p ••• )
nolHSHIlOO.TJOlo:
BatAYIOIl, I'IICROS1l:ucntRE, AliO IIEOWIICAL PIOPEJITIES I N lI,tlNITIC " ICROIoUDYfJ) sn:u : MM . I" 'M , lcltle S....... , Jo.hthl r o llaklk.do , TOahl,rou J_to, • , 0 !loo p\. Atcltl St eel IIorh, Ll.d. I, Ii.n.,.,.rl, " ' _ h i , To ... l-shi . '7b JAPU
lIo! fa'iaue ra tla, .nd the<> .......c... lull' developed tile """ baln H I~ .te r .... • 110,.0 nH I (0 . 2O!C-I.m'ln-o,'\O%Cr -o . 18%.'Io-O. 08tV) ~hich I. quite ""II In
A STUDY OF f- MARTENSITE TN UAO..IEtD ST.:EL ~ and G.J . ShiO~1 Departmenl of M~I~.iall Science, UniverJil' of VirtLnil, Ch.loueI";Ue. v i.tLfti. 2m3 T_o of the limplcal llruclUfeJ in metals ..e r cc and Hep. Their difference il due to the differtnl .tocklnc lI!quenCCl of the close-packed pl.net, nlmely tile ... ABCABC ... IDd the ... AIlAIlA IL. types. With the addiliOll or MD , 'oatenite, _hid il • lempento~ ph_ in ltee!, WI be retained .t loom lempelltu.e. The M~ addition also Tf!duoel lhe Ilockinc rlull ""erU of lullenite u d therefo.e enable. the fo.mlliOll of an IICP iron phut (called .... m.. tenlit e). Electron ud Oplical micrlllCOpie. lie used in tbe p.eJtnl in.esti,llioa \0 Jludy de\ail. of the fo"rmllioro ud ,rowlh 01 the ........ I11..,.;le uader diaerertl heal I.Cltment coaditiOD •. II i. .Ioowa thaI the IDlI1e .. lil~ form. U plltel of n.";"1 tloicUl!Illyi"l 00 Ihs {II I) pllfteJ of Ihe mllri~ loaUni!.!. Sometim.... , Ihe martel!SiU WI be ""d.... ic.ed .. il. tbe matri, plwe. It II alia obterY
hi'"
~.. ( b IUpported hy Ibe National Science DMR-M04I4'1.
TMS Genmll Abstract Session Room: 106 Cincinnati Convention Center
Session CMiTWOtnI2n: Catherine R. Wong. David Taylor
Research Center, Code 281 2, Annapolis, MD 21402 (2, 00 p . .. . )
THE OIARAC'l'ERJ'lATION OF DEFECT STRUCl1JRFS IN TIlE 7..ETA PIIASE IN IRO~·ZINC COUPI.ES. L A Gjanouzz;, H. W. Piekering, W. R. Siller and P. R. Howell. I),:panmenl of Maleriail Science .nd Eniinttrinj. The ~nn.~I •• ni4 SI.,e Uni".r,jl~. 1'1\ 1(>802 The u(l. (~) pIlase hIS been found '" form In IItOnu led uO'Hinc cooplcs. The phtie iJ m::>1\CIC!inic Ind .... beli • •• '/"'1 we .... II>c ,roup 10 documen, LIIc presence: of !he t phase in Fc-ZII ooupleJ. In ad<,Iil ion 10 lhe phl se iden,ir",,,ion. numerou~ Ii tlia dofe< '" ~ • •• becn llIal Yled. lncludin, di.lo.... 'ioru. I... in, and
11,..,
Slacki", flu I". The U tu ... of lhe dill",,",ion. hIS bttn ... min«! using lhe "h crilerion ond "'c ayJ!lllo""phy of the lwi"" h.. b«n in>'t s,ip 'o;I using JIIndoni sclccled ..... d,l1ll1C1ion (SAD) Ind """".,,,... 1beom elcclfl)O diffOlClion (CRED). The ~ofbooh i~ted plrlid uofoJoe t ""ase ond of . cominuou. ~)1" 01 t. I'll .t!oD pmnitled tIoclit'qui"lion 01 data COIICCrni", II>c lUUC'UR Q/ bulh IIlOIIOCliniclMu &ONl in",rf~ and of pai n boundaries in monodinic moootriIls. FinaUy. the """"" of oticn"" ion ...l.rionc A.... riQn E10ctr0pb~ ... Iftd Sutfaa:
F"'nillom Sode', and In!Mld 51«1 Corpor:olion for financial
under Gr&lll No.
(l ,1O 51 ,., )
PHASE TRANSFORMATION I Wednesday, P.M. Cktober 23, 1991
Fouftdatio~
$Uppotl.
n,20p . ... 1
THE ORIGIN AND NATURE Of LARGE PEA RUTE NODULES IN A" Fe. O. I Yi>C·I.~'Io MnALLOY S. W. ~I.ndf R Howell 2 1. Advlnced S,eel ~»inll ~!Id Prod\lc's Re:iUR:h Ccn~ •. Depmmt'nI of M((l.IIUIJic~ and Mloeri~rs £nlmrin" The CoIor..do Schoolof Mi~ Golden CO . 8tJ.l01. 2. Dep""""'nt of M.. eri:ols Science Ind En&i_rin!. The ~nllSylvlm. St.", Un i~mily, Uni~mty PiCllly, lhek ~ lIOdules inverse kven l femle!peu)ole b:/.nd. and I~ nodules ... hibit im:SUlar ~lCkin. ~ ..... '.cri"~ when eun,i...d in ,"" lip' mic,os",opo:. In ,~c p = ' 'nve,ppl.""'. I"h, moc,?scropy, oc~Mi", elCClron microscropy (SEM) Ind IrInsrn" SI"" .I«-Iron mICro:c Illij:in I nd nllUre of these lalle nodule •. A.
It will be $ho ... n th~t the nod"ludt.e lop in abnonnally Ivgc (C;"'" 200 mm) lu~nile grai ns and ,~. irre,ul .. c~hing cln be I ,trib.."td to a hi ghly .ari~ble volume fIKtion of e..... ntile in ,he: pearl ite colonie< wh,eh compri.. the nodule
MODELING OF PIT (PRECIPITA TlO:>! · TIME-TEMPERA TUftE) DIAGRAMS: W"p~Su.Jl. M. Militur .nd J.J . Jo ..... Dep.l'\Ifto:ntof Metallurgic.fEi""i«';n" McGill U niyetalty, 3450 University Stnet, Montn..I , Clnlda,ll3A 2A7 Precipitation. Lime· temper.t""" di. ,.. ml . "" of pr.ctic.1 importance in the lh"momffh.nicll proee lai n, .nd hut tn.un.nl ofste<:la ... d I lIoy.. With the help of modified n"cleltio n Ind ifO.... th theories, Idn~ti( model. we..., developed in tht preHnt invel ti, ..io n ror predictinl!' PIT ""lltion.hips for . t .... in .;ndueed pl"tcipitation. The cfTect.s ,?f alloy;~1!' (ieme.nu. nUdCl lion litu and n~us v'Qncies IS ... ell il ,nter(ftclil e neT(l1 t1 .nd cohe ... ncy h .~e been .ncorporated into thqoe model•. A. an . ppltefttlon. they were successfully employed \0 pn:dict PM' di ' l!'ra m l for MnS pr~cipilltion in 3'10 Si steels .nd Ti(CN) p... c;pitation in 0 .25% Ti s teel l. The predictions s ho ... llooci a,rum. nl ... ilh the u.!?triment.1 .eaults obtained by t he cr eep technique . nd electr(ln m.crotcopy. 1l , ·0 p . • ,) ELASTIC STIlA IN ENEilGY ACCOMPANYING GiiOwnt .'OIt MAT)ON DURING PRECIPITATION ' : ~ Mel W. T. Reynold> I•., Moteri.ls En,i",""""" Dq>arun.,., PoIyoecbnic IRlli'u, • ..." Sate Uni ......ity. 8Ioobltu'l. VA 24061-0237
tA,,,,,,,,,
I..EDGE vi
The formlllM rar. Jedce< Of! f_cd precipioaocs won&l, . ffccu procipi.... powtlo kiMtics _1It(NphoIou. On!: 01. .... f....... "'"' illllucot.ca obt f _ .... !lie ;' ,he WlIOn <""'11 ..........,..,y....... ~ucleabooo 01.. led" . 11m conoisu of • !elf ...... CIICfJ)' 01. led,. _leul .... .. ~ ......, I>etoo
Icd,.
.se.....
,.... oct;.. ....., . TW '"""*1 is....:l Ie - . . . - .......... .-<&'1 HOOcioocd ""'. "'" _lr.ooion 01. lledcc OIl diff..... Itabio: plaaa 01. • sa: procipiwe in .. FCC 1Il3ln • • TW lUuI.... pbic lAlllfonnatoon ..." doe I
DMR.~2 190
(.,00 p ••• )
bperi."UI Observ'tilln of tl>/> [ffects IIf toh .. ~ncl' Str-.ues Of! " ' " P~lSe (quillbril tn Tl-AI "lIoys, J . 1. Huh· , J . N. H~·· Ind II.C. Johnson ' , 'IIetlllurgtCl~r;"'I I nd IIneri lls Sclene" Clrnegt@ ""lIan Uniwe r slty. Ptttsburgh, p" 15213, ' °OeputtIo!nl af ItHeft.1s Science . Unh@rslty of ~lr9Ini •• Ch'rlottuvlll~, VA 22901
lie show SGllt .lperllM!nul evfd~nCf s ubstlntlltlng sooooe recent tbe" .... llul predictions of coloot r ent two-pbase @quillbrla in blnny ,ubstitu tlonal so lid!, For a given Iglng t_r~ture (nS Or 8OO ' C), both coberent Ind Incoheren t 1t~tes of coelhtlng D{ ... tr!.) Ind " (prtc!p1!tte) were "lIt.tned frooo ticn of two
68-TMS Fall Meeting bl",ry fl_Al .1ioys conhlning . 4.94 iRe! 16 . 64 .tUI.
electron .. icroscopy (,I.EM) lias bHn e.p loyed to
Ana lytfc.l
det~l'O!ine
the
e qut11briu. phase camposltions of the coe.htfng G and~} In both c"""r .... t .nd Incoher ent .htu. The results frDIII tile AEM 'Mly
COIICIOsHio". ~Ig n l f funt .
These resu lts Ire Iho sllowol to be st. thti c. lIy Thh wort his
Science fauooltton.
~n
s UppOrted by t he IIIt10<1.1
(a,20 p ... . ) l(lNETIC PAnI$ OF ORDeRING I N ALLOYS rAIl: FiIOII Tll£PJ!O[l1'l\All.lc ~!"rlIRI1)M, IIren' FulU , o.pt. of 1IIot.. Sci., 1)8-78 , CalHOrTIia lUt. of '\'o , a 91115. lin .Uoy "'Y 9In. . . Uy . . .' - diU"ent eori>tn.otion. of ordu par~ tu . an route to i t . . Ute o f t1,.