Meetings & Events

fall 1996 logo1996 MRS Fall Meeting & Exhibit

December 2 - 6, 1996 | Boston
Meeting Chairs:
 Werner Lutze, Karen Maex, Karl Sieradzki




Symposium Z—High-Temperature Ordered Intermetallic Alloys

Chairs

Carl Koch -- North Carolina State Univ
Chain Liu -- Oak Ridge National Laboratory
Norman Stoloff -- Rensselaer Polytechnic Inst
Alexander Wanner -- Max-Planck-Inst

Symposium Support

  • Oak Ridge National Laboratory
* Invited paper

SESSION Z1: TITANIUM ALUMINIDES I
Chairs: Helmut Clemens and Carl C. Koch
Monday Morning, December 2, 1996
Salon A/B (M)
8:30 AM *Z1.1
DEFORMATION AND FRACTURE OF BI-PST CRYSTALS AND DIRECTIONALLY SOLIDIFIED INGOTS OF TiAl, K. Kishida, David R. Johnson, Yoshihiro Masuda, H. Inui, M. Yamaguchi, Kyoto University, Dept of MS&E, Kyoto, JAPAN.

9:00 AM Z1.2
MECHANICAL PROPERTIES AND RELATED THERMALLY ACTIVATED PROCESSES IN A TWO-PHASE TITANIUM ALUMINIDE, Yu Wang, Yu Zhang, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

9:15 AM Z1.3
MECHANISM OF ROOM TEMPERATURE DUCTILITY IMPROVEMENT IN DIRECT-SHEET-CAST TiAl-BASED ALLOY, Toshihiro Hanamura, Nippon Steel Corporation, Adv Technology Lab, Kawasaki, Japan; Keizo Hashimoto, Nippon Steel Corporation, Adv Tech Research Lab, Kawasaki, JAPAN.

9:30 AM Z1.4
SOLUTION AND PRECIPITATION HARDENING IN CARBON-DOPED TWO-PHASE tex2html_wrap_inline613 -TITANIUM ALUMINIDES, Fritz Appel, Ulrich Christoph, Richard Wagner, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY.

9:45 AM BREAK

10:15 AM Z1.5
KEY MICROSTRUCTURAL FACTORS CONTROLLING MECHANICAL PROPERTIES OF TWO-PHASE TIAl ALLOYS WITH LAMELLAR STRUCTURES, Chain T. Liu, P. J. Maziasz, J. H. Schneibel, J. L. Wright, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

10:30 AM Z1.6
ALLOYING EFFECT OF VANADIUM UPON STRUCTURE AND STRENGTH OF tex2html_wrap_inline615 -PHASE TITANIUM TRIALUMINIDE, Tohru Takahashi, Tokyo Univ of Agric & Tech, Dept of Mech Systems Engr, Tokyo, JAPAN; Kenji Iwami, Tokyo Univ of Agric & Tech, Dept of Mechanical Systems Engr, Koganei-shi, Tokyo; Tadashi Hasegawa, Tokyo Univ of Agric & Tech, Dept of Mech Systems Engr, Tokyo, JAPAN.

10:45 AM Z1.7
THE EFFECT OF ALUMINUM ON THE TRANSFORMATION OF PLATES WITH THE ORTHORHOMBIC PHASE IN THE Nb-Ti-Al TERNARY SYSTEM, David T. Hoelzer, NYS College of Ceramics, School of Ceramic Engr & Sciences, Alfred, NY; Fereshteh Ebrahimi, Univ of Florida, Dept of MS&E, Gainesville, FL.

11:00 AM Z1.8
MICROSTRUCTURE ANALYSIS OF MELT-SPUN Al tex2html_wrap_inline617 Ti-Nb INTERMETALLICS BY XRD AND EXAFS, Jinmin Chen, Enrique V. Barrera, Rice Univ, Dept of Mechanical Eng & Matls Science, Houston, TX; W. E. Frazier, Naval Air Warfare Center, Aircraft Div, Patuxent River, MD.

11:15 AM Z1.9
ALLOYING EFFECTS ON Nb ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF THE MULTI-HASE CUBIC tex2html_wrap_inline619 BASED ALLOYS, Xiaojun Weng, Yunyi Fu, Qian Wang, Gengxiang Hu, Shanghai Jiao Tong Univ, Dept of Materials Science, Shanghai, CHINA.

11:30 AM Z1.10
EFFECTS OF PROCESSING AND TERNARY ALLOYING ON THE MICROSTRUCTURE AND FRACTURE TOUGHNESS OF tex2html_wrap_inline621 , John C. Ma, John E. Benci, Wayne State Univ, Dept of MS&E, Detroit, MI.

11:45 AM Z1.11
TEMPERATURE DEPENDENCE OF FRACTURE TOUGHNESS OF THE CUBIC tex2html_wrap_inline623 TITANIUM TRIALUMINIDES, Robert A. Varin, L. Zbroniec, Univ of Waterloo, Dept of Mechanical Engr, Waterloo, CANADA.

SESSION Z2: TITANIUM ALUMINIDES II
Chairs: Chain T. Liu and M. Yamaguchi
Monday Afternoon, December 2, 1996
Salon A/B (M)
1:30 PM *Z2.1
PROCESSING-PROPERTY-MICROSTRUCTURE RELATIONSHIPS IN TiAl-BASED ALLOYS, Mike H. Loretto, Univ of Birmingham, IRC on Materials, Birmingham, UNITED KINGDOM; D. Hu, Univ of Birmingham, IRC , Edgbaston, UNITED KINGDOM; A. Godfrey, T. T. Cheng, I. P. Jones, P. A. Blenkinsop, Univ of Birmingham, Edgbaston, UNITED KINGDOM.

2:00 PM Z2.2
MICROSTRUCTURAL CHARACTERIZATION OF A FORGED AND HEAT-TREATED TiAl ALLOY CONTAINING SILICON, Donald L. Anton, United Technologies Res Ctr, East Hartford, CT.

2:15 PM Z2.3
FORMATION OF FINE tex2html_wrap_inline613 -GRAIN STRUCTURE THROUGH FINE tex2html_wrap_inline627 LAMELLAR STRUCTURE, Tatsuo Kumagai, Nat Research Inst for Metals, 3rd Research Group, Ibaraki, JAPAN; Eiji Abe, Nat Research Inst for Metals, 3rd Research Group, Ibaraki, JAPAN; M. Nakamura, Nat Research Inst for Metals, Ibaraki, JAPAN.

2:30 PM Z2.4
MECHANICAL ANISOTROPY IN SHEETS OF tex2html_wrap_inline613 -TiAl ALLOYS, Arno Bartels, Technical Univ Hamburg-Harburg, Dept of Physics & Technology of Materials, Hamburg, GERMANY; Helmut Clemens, Plansee AG, Technology Center, Reutte, AUSTRIA; Christian Hartig, Heinrich Mecking, Technical Univ Hamburg-Harburg, Physics & Technology of Materials, Hamburg, GERMANY.

2:45 PM BREAK

3:15 PM Z2.5
PLASTICITY AND DISLOCATION STRUCTURES IN Ti-Al, Lorenzo Parrini, ETH Zurich, Zurich, SWITZERLAND; Helge Heinrich, ETH Zurich, Dept of Angewandte Physik, Zurich, SWITZERLAND; Gernot Kostorz, ETH Zurich, Inst fur Angewandte Physik, Zurich, SWITZERLAND.

3:30 PM Z2.6
NANOCRYSTALLINE TiAl COMPACTS PREPARED BY HDDR AND HOT PRESSING, Kiyoshi Aoki, Kitami Inst of Technology, Dept of Materials Science, Kitami Hokkaido, JAPAN; Y. Itoh, Tohoku Univ, Inst for Materials Research, Sendai, JAPAN; Akihisa Inoue, Yoshihito Kawamura, Tohoku Univ, Inst of Materials Research, Miyagi, JAPAN; Tsuyoshi Masumoto, Res Inst Elec Mag Mater, Miyagi, JAPAN.

3:45 PM Z2.7
MICROSTRUCTURE, MECHANICAL PROPERTIES, AND HIGH-TEMPERATURE OXIDATION RESISTANCE OF BORONIZED tex2html_wrap_inline613 -TiAl, Soosik Kim, Youngsic Yoon, Hansam Kim, Inha Univ, Dept of Metallurgical Engr, Inchon, SOUTH KOREA; Kyeongsoon Park, Chung-ju National Univ, Dept of Materials Engr, Chungbuk, SOUTH KOREA.

4:00 PM Z2.8
A HIGH-DUCTILITY tex2html_wrap_inline613 -TITANIUM ALUMINIDE, Xiaoqun Chen, Central South Univ of Technology, Powder Metallurgy Res Inst, Hunan, CHINA; Baiyun Huang, Yuehui He, Xuanhui Qu, Central South Univ of Technology, Powder Metallurgy Research Inst, Hunan, CHINA; Zehui Lei, Academia Sinica, Beijing, CHINA.

4:15 PM Z2.9
REFINEMENT OF FULLY LAMELLAR STRUCTURE OF Ti-46.4Al-2Cr-IV ALLOYS, K. H. Wu, Jianlu Ma, Florida International Univ, Dept of Mechanical Engr, Miami, FL; Ying Gao, Z. J. Pu, Florida International Univ, Dept of Mech Engr, Miami, FL.

4:30 PM Z2.10
A NEW DOUBLE-TEMPERATURE HEAT TREATMENT FOR TiAl-BASED ALLOYS, Peng Cao, Yuehui He, Central South Univ of Technology, Powder Metallurgy National Key Lab, Hunan, CHINA; Baiyun Huang, Xuanhui Qu, Central South Univ of Technology, Powder Metallurgy Research Inst, Hunan, CHINA.

4:45 PM Z2.11
Al-21Ti-23Cr HIGH-TEMPERATURE PROTECTIVE COATING ON TiAl INTERMETALLIC COMPOUNDS BY RF MAGNETRON SPUTTERING, Jeong-Yong Park, Korea Adv Inst of Science & Technology, Dept of MS&E, Taejon, SOUTH KOREN; Ho-Nyun Lee, KAIST, Dept of MS&E, Taejon, SOUTH KOREA; Dang-Moon Wee, Korea Adv Inst of Science & Technology, Dept of MS&E, Taejon, SOUTH KOREA; Sang-Wook Park, Hyundai Electronics, Dept of Package Development, Kyoungki-do, SOUTH KOREA; Myung-Hoon Oh, Kumoh National Univ of Technology, Dept of MS&E, Kyungbuk, SOUTH KOREA.

SESSION Z3: POSTER SESSION: MECHANICAL PROPERTIES OF TITANIUM ALUMINIDES AND OTHER ALLOYS
Chairs: Amit K. Ghosh and Helen M. Kerch
Monday Evening, December 2, 1996
8:00 P.M.
Grand Ballroom (S)
Z3.1
TENSILE TESTING OF SINGLE CRYSTAL tex2html_wrap_inline635 , Marc Zupan, Johns Hopkins Univ, Dept of Mechanical Engr, Baltimore, MD; Kevin J. Hemker, Johns Hopkins Univ, Dept of Mech Engr, Baltimore, MD.

Z3.2
INFLUENCE OF MICROSTRUCTURE REFINEMENT ON STRENGTH, DUCTILITY AND TOUGHNESS OF TiAL ALLOYS, Maria A. Morris, Univ of Neuchatel, Inst of Structural Metallurgy, Neuchatel, SWITZERLAND; M. Leboeuf, Univ of Neuchatel, Inst of Structural Metallurgy, Neuchatel, SWITZERLAND.

Z3.3
HALL-PETCH AND MULTIPLE LINEAR REGRESSION EQUATIONS FOR THE PREDICTION OF MECHANICAL PROPERTIES IN GAMMA TITANIUM ALUMINIDES, Winston O. Soboyejo, A.B. O. Soboyejo, Y. Ni, C. Mercer, Ohio State Univ, Dept of MS&E, Columbus, OH.

Z3.4
HIGH RATE DEFORMATION RESPONSE OF A POLYSYNTHETICALLY TWINNED (PST) TiAl CRYSTAL, Zhe Jin, George T. Gray, Los Alamos National Laboratory, Los Alamos, NM.

Z3.5
TENSILE PROPERTIES AND DEFORMATION MECHANISMS IN TWO-PHASE TITANIUM ALUMINIDE SHEET MATERIAL, Fritz Appel, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY; Helmut Clemens, Wolfgang Glatz, Plansee AG, Technology Center, Reutte, AUSTRIA; Richard Wagner, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY.

Z3.6
MICROSTRUCTURE OF MASSIVELY TRANSFORMED tex2html_wrap_inline613 -TiAl PHASE STUDIED BY HIGH-RESOLUTION ELECTRON MICROSCOPY, Eiji Abe, Nat Research Inst for Metals, 3rd Research Group, Ibaraki, JAPAN; Tatsuo Kumagai, Nat Research Inst for Metals, 3rd Research Group, Ibaraki, JAPAN; S. Kajiwara, M. Nakamura, Nat Research Inst for Metals, Ibaraki, JAPAN.

Z3.7
STATIC AND DYNAMIC STRAIN AGEING IN TWO-PHASE - tex2html_wrap_inline613 -TITANIUM ALUMINIDES, Ulrich Christoph, Fritz Appel, Richard Wagner, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY.

Z3.8
MICROSTRUCTURAL CHANGES DURING LONG-TERM TENSION CREEP OF TWO-PHASE tex2html_wrap_inline613 -TITANIUM ALUMINIDE ALLOYS, Michael Oehring, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY; P. J. Ennis, Julich Research Centre, Inst for Materials in Energy Systems, Julich, GERMANY; Fritz Appel, Richard Wagner, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY.

Z3.9
TRANSIENT CREEP BEHAVIOR OF tex2html_wrap_inline613 -TiAl POLYCRYSTALS, Joel Bonneville, EPFL, Dept de Physique, Lausanne, SWITZERLAND; Jean Luc Martin, EPFL, Inst de Genie Atomique Dept de Physique, Lausanne, SWITZERLAND; Philippe Spatig, Paul-Scherrer-Inst, Association Euratom, Villigen, SWITZERLAND; Bernard Viguier, EPFL, Dept de Physique, Lausanne, SWITZERLAND.

Z3.10
CREEP BEHAVIOR OF POLYSYNTHETICALLY TWINNED (PST) tex2html_wrap_inline613 -TITANIUM ALUMINIDES, Madan G. Mendiratta, P. R. Subramanian, T. A. Parthasarathy, UES Inc, Dayton, OH; Sriram Seshagiri, Systran Corp, Dayton, OH.

Z3.11
DEFORMATION BEHAVIOR OF TITANIUM ALUMINIDES WITH A NEAR GAMMA MICROSTRUCTURE - MODELING AND EXPERIMENTS, Sabine Maria Schlogl, Univ for Mining & Metallurgy, Christian Doppler Lab for Micromechnics for Matls, Leoben, AUSTRIA; Franz Dieter Fischer, Univ for Mining & Metallurgy, Inst of Mechanics, Leoben, AUSTRIA; Helmut Clemens, Wolfgang Glatz, Plansee AG, Technology Center, Reutte, AUSTRIA; Arno Bartels, Technical Univ Hamburg-Harburg, Dept of Physics & Tech of Matls, Hamburg, GERMANY.

Z3.12
INVESTIGATION OF THE INTERACTION BETWEEN PLANAR DEFECTS IN A MASSIVELY TRANSFORMED GAMMA ALLOY, Xiao-Dong Zhang, Jorg M. Wiezorek, Hamish L. Fraser, Ohio State Univ, Dept of MS&E, Columbus, OH; Michael J. Kaufman, Univ of Florida, Dept of MS&E, Gainesville, FL; Mike H. Loretto, Univ of Birmingham, IRC on Materials, Birmingham, UNITED KINGDOM.

Z3.13
FORMATION AND STABILITY OF ULTRAFINE FULLY-LAMELLAR STRUCTURES IN TWO-PHASE tex2html_wrap_inline613 -TiAl ALLOYS, P. J. Maziasz, Chain T. Liu, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

Z3.14
THE EFFECT OF HEAT TREATMENT ON THE OXIDATION BEHAVIOR OF Ti-48Al-2Cr, M. F. Stroosnijder, European Commission, Inst for Adv Materials/Joint Res Ctr, Ispra, ITALY; V. A.C. Haanappel, European Commission, Inst of Advanced Materials, Ispra, ITALY; G. Macchi, European Commission, Inst for Advanced Materials, Ispra, ITALY; W. Glatz, Montanuniversitat, Inst for Metallkunde & Werkstoffprufung, Leoben, AUSTRIA; Helmut Clemens, Plansee AG, Technology Center, Reutte, AUSTRIA.

Z3.15
KINETICS OF THE tex2html_wrap_inline649 TRANSFORMATION AND MICROSTRUCTURAL CHARACTERIZATION OF THE MASSIVE tex2html_wrap_inline613 AND tex2html_wrap_inline653 INTERFACE IN TiAl INTERMETALLIC ALLOYS, D. Veeraraghavan, Vijay K. Vasudevan, Univ of Cincinnati, Dept of MS&E, Cincinnati, OH.

Z3.16
THE EFFECTS OF tex2html_wrap_inline655 -STABILIZING ELEMENTS AND BORON ADDITIONS ON MICROSTRUCTURE EVOLUTION IN tex2html_wrap_inline613 -Ti ALUMINIDES, Bharath Natarajan, Univ of Cincinnati, Cincinnati, OH; Dennis M. Dimiduk, Air Force Wright Laboratory, WL/MLLM Materials Directorate, Wright Patterson AFB, OH; Vijay K. Vasudevan, Univ of Cincinnati, Dept of MS&E, Cincinnati, OH.

Z3.18
INFLUENCE OF W AND Si ADDITIONS ON HIGH-TEMPERATURE OXIDATION OF tex2html_wrap_inline613 -TiAl ALLOYS, Andrea Tomasi, CMBM, Dept of Matls Engr, Trento, ITALY; S. Gialanella, CMBM, Dept of Material Engr, Trento, ITALY; C. Noseda, Mohamed Nazmy, ABB Power Generator Ltd, Dept of Materials Technology, Baden, SWITZERLAND.

Z3.19
TRANSMISSION OF SHEAR ACROSS LAMELLAR tex2html_wrap_inline661 INTERFACES IN tex2html_wrap_inline663 , Jorg M. Wiezorek, Paul DeLuca, Hamish L. Fraser, Ohio State Univ, Dept of MS&E, Columbus, OH.

Z3.20
ASYMMETRY OF SLIP SYSTEMS IN tex2html_wrap_inline665 SINGLE CRYSTALS DEFORMED ALONG WITH C-AXIS, Y. Minonishi, Tohoku Univ, Inst for Materials Research, Sendai, JAPAN; Marc Legros, Johns Hopkins Univ, Dept of Mechanical Engr, Baltimore, MD; Daniel Caillard, CNRS, Dept of CEMES, Toulouse, FRANCE.

Z3.21
THE ANOMALOUS FLOW BEHAVIOR IN SINGLE-PHASE tex2html_wrap_inline667 SINGLE-PHASE SINGLE CRYSTALS; THE EFFECT OF DEFORMATION HISTORY, Rabindra N. Mahapatra, Lehigh Univ, Dept of MS&E, Bethlehem, PA; David P. Pope, Univ of Pennsylvania, Dept of MS&E, Philadelphia, PA.

Z3.22
STRAIN-RATE SENSITIVITY OF THE ANOMALOUS YIELD STRESS IN INTERMETALLIC ALLOYS, Yong-Qian Sun, Systran Corp, Dayton, OH; Satish I. Rao, UES Inc, Dayton, OH; Peter M Hazzledine, UES Inc, Dayton, OH.

Z3.23
TEXTURE STUDIES OF GAMMA TITANIUM SHEETS PRODUCED BY MELT OVERFLOW RAPID SOLIDIFICATION, Hamid Garmestani, Florida State Univ, Dept of Mechanical Engr, Tallahassee, FL; Mark L Weaver, Florida A&M Univ, Ctr Nonlinear & Nonequilibrium Aeroscience, Tallahassee, FL; G. Das, Pratt & Whitney Aircraft, West Palm Beach , FL.

Z3.24
MEASUREMENT OF TWINNING ELEMENTS IN PST TiAl SINGLE CRYSTALS USING ATOMIC FORCE MICROSCOPY, Lu Lei, David P. Pope, Univ of Pennsylvania, Dept of MS&E, Philadelphia, PA.

Z3.26
ATOMISTIC MODELING OF THE DISLOCATION GLIDE IN tex2html_wrap_inline669 TiAl, Alexey Girshick, Vaclav Vitek, Univ of Pennsylvania, Dept of MS&E, Philadelphia, PA.

SESSION Z4: CREEP AND FATIGUE OF TITANIUM ALUMINIDES
Chairs: Mike H. Loretto and Alexander Wanner
Tuesday Morning, December 3, 1996
Salon A/B (M)
9:00 AM Z4.1
CREEP PROPERTIES OF FORGED AND CAST tex2html_wrap_inline613 -BASED TITANIUM ALUMINIDE ALLOY, Daniel S. Schwartz, Donald S. Shih, McDonnell Douglas Aerospace, St Louis, MO.

9:15 AM Z4.2
MONOTONIC AND TRANSIENT CREEP PROPERTIES OF SINGLE-PHASE GAMMA TiAl: RELATIONS WITH DEFORMATION MECHANISMS, Min Lu, Johns Hopkins Univ, Dept of Mechanical Engr, Baltimore, MD; Kevin J. Hemker, Johns Hopkins Univ, Dept of Mech Engr, Baltimore, MD.

9:30 AM Z4.3
CREEP PROPERTIES OF NEAR AND FULLY LAMELLAR STRUCTURES IN Ti-48Al BASED ALLOYS, Babu Viswanathan, Univ of Cincinnati, Cincinnati, OH; Vijay K. Vasudevan, Univ of Cincinnati, Dept of MS&E, Cincinnati, OH.

9:45 AM Z4.4
DEFORMATION MECHANISMS RESPONSIBLE FOR THE CREEP RESISTANCE OF Ti-Al ALLOYS, Maria A. Morris, T. Lipe, Univ of Neuchatel, Inst of Structural Metallurgy, Neuchatel, SWITZERLAND.

10:00 AM Z4.5
EFFECT OF INTERSTITIAL CONCENTRATION ON MICROSTRUCTURE AND PRIMARY CREEP OF INVESTMENT CAST Ti-47Al-2Mn-2Nb WITH 0.8V% tex2html_wrap_inline673 , D. Y. Seo, Thomas R. Bieler, Michigan State Univ, Dept of Matls Science & Mech, East Lansing, MI; D E Larsen, Howmet Corp, Operhall Research Center, Whitehall, MI.

10:15 AM BREAK

10:45 AM Z4.6
CREEP DEFORMATION OF A FULLY LAMELLAR GAMMA BASED TITANIUM ALUMINIDE ALLOY, F. Herrouin, P. Bowen, Ian P. Jones, Univ of Birmingham, School of Metallurgy & Materials, Birmingham, UNITED KINGDOM.

11:00 AM Z4.7
EFFECT OF STRESS ON CREEP OF LAMELLAR NEAR tex2html_wrap_inline613 -TiAl, Jonathan Beddoes, Jim Triantafillou, Carleton Univ, Dept of Mechanical & Aerospace Engr, Ottawa, CANADA; Linrou Zhao, National Research Council, Structures Materials & Propulsion Lab, Ottawa, ON.

SESSION Z5: IRON ALUMINIDES
Chairs: John Mundy and Norman S. Stoloff
Tuesday Afternoon, December 3, 1996
Salon A/B (M)
1:30 PM *Z5.1
RECENT WORK ON ENVIRONMENTAL EMBRITTLEMENT IN IRON ALUMINIDES AND SILICIDES, Guoliang Chen, Jihua Peng, Xitao Wang, Univ of Sci & Tech Beijing, State Key Lab for Adv Metals & Matls, Beijing, CHINA.

2:00 PM Z5.2
ROLE OF EDGE AND SCREW DISLOCATIONS IN THE ENVIRONMENTAL EMBRITTLEMENT OF Fe-Al INTERMETALLIC COMPOUND, Hiroyasu Saka, Nagoya Univ, Dept of Quantum Engr, Aichi-ken, JAPAN; Toshihiro Nishizake, Nagoya Univ, Dept of MS&E, Chikusa-ku Nagoya, Nagoya.

2:15 PM *Z5.3
MICROSTRUCTURE CONTROL OF IRON ALUMINIDES BY PHASE DECOMPOSITION OR BY MECHANICAL ALLOYING FOR IMPROVED STRENGTH AND DUCTILITY, D. G. Morris, Univ of Neuchatel, Inst of Structural Metallurgy, Neuchatel, SWITZERLAND; S. Gunther, Univ of Neuchatel, Inst of Structural Metallurgy, Neuchatel, SWITZERLAND.

2:45 PM *Z5.4
YIELD STRESS ANOMALY IN B2 FeAl, Kyosuke Yoshimi, Shuji Hanada, Tohoku Univ, Inst for Materials Research, Sendai, JAPAN; Man Hyong Yoo, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

3:15 PM BREAK

3:45 PM Z5.5
THE EFFECT OF HEAT TREATMENT ON THE MICROSTRUCTURE AND PROPERTIES OF FeAl-Cr ALLOYS, Paul R. Munroe, Charlie Kong, Univ of New South Wales, Dept of MS&E, Sydney, AUSTRALIA.

4:00 PM Z5.6
EFFECT OF IRON CONTENT AND HEAT TREATMENT ON THE PRECIPITATION OF A NEW TETRAGONAL BORIDE PHASE IN FeAl + B ALLOYS, Xavier Pierron, Ian Baker, Dartmouth College, Thayer School of Engineering, Hanover, NH.

4:15 PM Z5.7
PLASTICITY, DISLOCATION STRUCTURES, AND ANTIPHASE BOUNDARY ENERGIES IN tex2html_wrap_inline677 SINGLE CRYSTALS WITH CHROMIUM, Filip Kral, ETH Zurich, Dept of Physics, Zurich, SWITZERLAND; Peter Schwander, Inst fur Halbleiterphysik, Frankfurt, GERMANY; Gernot Kostorz, ETH Zurich, Inst fur Angewandte Physik, Zurich, SWITZERLAND.

4:30 PM Z5.8
EFFECT OF ADDITION ELEMENT Mn AND TEMPERATURE ON THE IMPACT FRACTURE TOUGHNESS OF tex2html_wrap_inline677 BASED ALLOYS, Jiangnan Liu, Xian Inst of Technology, Dept of MS&E, Xian, CHINA; Jianlu Ma, Florida International Univ, Dept of Mechanical Engr, University Park, FL; Wen Yan, Xian Inst of Technology, Dept of MS&E, Xian, CHINA; K. H. Wu, Florida International Univ, Dept of Mechanical Engr, Miami, FL.

SESSION Z6: NICKEL ALUMINIDES
Chairs: Ian Baker and Easo P. George
Wednesday Morning, December 4, 1996
Salon A/B (M)
8:30 AM *Z6.1
INSIGHT INTO THE DEFORMATION AND FRACTURE BEHAVIOR OF NiAl SINGLE CRYSTALS AS A FUNCTION OF TEMPERATURE, Vladmir I. Levit, Igor A. Bul, Jian Hu, J. S. Winton, Michael J. Kaufman, Univ of Florida, Dept of MS&E, Gainesville, FL.

9:00 AM Z6.2
EXAMINATION OF DISLOCATION STRUCTURES IN THE CRACK TIP REGION OF B2 NiAl ALLOYS, Boon-Chai Ng, Michigan State Univ, Dept of Mats Science & Mech, East Lansing, MI; B. Simkin, Michigan State Univ, Dept of Matls Science & Mechanics, East Lansing, MI; Martin A. Crimp, Michigan State Univ, Dept of Mats Science & Mech, East Lansing, MI.

9:15 AM Z6.3
EFFECT OF PRESTRAINING ON THE BRITTLE-TO-DUCTILE TRANSITION OF NiAl SINGLE CRYSTALS, Sanjay Shrivastava, Fereshteh Ebrahimi, Univ of Florida, Dept of MS&E, Gainesville, FL.

9:30 AM Z6.4
EFFECTS OF STOICHIOMETRY, MICROALLOYING AND AGING HEAT TREATMENTS ON THE COMPRESSIVE BEHAVIOR OF NiAl ALLOYS, Dmitri Golberg, Nat Research Inst for Metals, Dept of Chemical Processing, Ibaraki, JAPAN; Gerhard Sauthoff, Max-Planck-Inst, Dept of Physical Metallurgy, Dusseldorf, GERMANY.

9:45 AM Z6.5
PREPARATION, DEFORMATION AND FRACTURE BEHAVIOR OF STOICHIOMETRIC NiAl SINGLE CRYSTALS, Wolfgang Loeser, Max-Planck-Inst, Inst fur Werkstoffe, Dresden, GERMANY; Albert Gueth, Gernot Vaerst, Max-Planck-Inst, Inst fur Werkstofforschung, Dresden, GERMANY; Alfred Koethe, Max-Planck-Inst, Inst fur Werkstoffschung, Dresden, GERMANY.

10:00 AM Z6.6
MICROSTRUCTURE OF CREEP TESTED AIN STRENGTHENED NiAl, Anita Garg, J. Daniel Whittenberger, NASA Lewis Research Center, Materials Div, Cleveland, OH; Michael J. Luton, Exxon Research & Engineering Co, Annandale, NJ.

10:15 AM BREAK

10:45 AM Z6.7
ROOM TEMPERATURE MECHANICAL PROPERTIES OF OXIDE DISPERSION STRENGTHENED NiAl-BASE ALLOYS, Alexander Wanner, Bernd Schietinger, Max-Planck-Inst, Inst fur Werkstoffwissenschaft, Stuttgart, GERMANY; Eduard Arzt, Max-Planck-Inst fur Metallforschung, Inst fur Werkstoffwissenschaft, Stuttgart, GERMANY.

11:00 AM Z6.8
MECHANICAL PROPERTIES OF BINARY tex2html_wrap_inline681 SINGLE AND POLYCRYSTALS, Jean Luc Martin, EPFL, Inst de Genie Atomique Dept de Physique, Lausanne, SWITZERLAND; Joel Bonneville, Birgit Matterstock, EPFL, Dept de Physique, Lausanne, SWITZERLAND; Philippe Spatig, Paul-Scherrer-Inst, Association Euratom, Villigen, SWITZERLAND; Bernard Viguier, EPFL, Dept de Physique, Lausanne, SWITZERLAND.

11:15 AM Z6.9
STOICHIOMETRIC Ni tex2html_wrap_inline617 Al:BRITTLE AT HIGH STRAIN RATES, Erland M. Schulson, Dartmouth College, Thayer School of Engr, Hanover, NH; Y. Xu, Dartmouth College, Thayer School of Engineering, Hanover, NH.

11:30 AM Z6.10
ORIENTATION DEPENDENCE OF HIGH-TEMPERATURE CREEP STRENGTH AND INTERNAL STRESS IN tex2html_wrap_inline681 ALLOY SINGLE CRYSTALS, Zhilum Peng, Seiji Miura, Yoshinao Mishima, Tokyo Inst of Technology, Precision & Intelligence Lab, Midori-ku Yokohama, JAPAN.

11:45 AM Z6.11
PRIMARY CREEP OF tex2html_wrap_inline687 (Al,Ta) AT LOW TEMPERATURES IN THE ANOMALOUS FLOW REGIME, Michael D. Uchic, William D. Nix, Stanford Univ, Dept of MS&E, Stanford, CA.

SESSION Z7: PROCESSING
Chairs: B. P. Bewlay and Hamish L. Fraser
Wednesday Afternoon, December 4, 1996
Salon A/B (M)
1:30 PM *Z7.1
PHASE STABILITY IN PROCESSING OF HIGH TEMPERATURE INTERMETALLIC ALLOYS, John H. Perepezko, Carlos A. Nunes, Seong Hoon Yi, Univ of Wisconsin-Madison, Dept of MS&E, Madison, WI; Dan J. Thoma, Los Alamos National Laboratory, Ctr for Material Science, Los Alamos, NM.

2:00 PM *Z7.2
PLASMA SPRAY PROCESSING OF INTERMETALLICS AND THEIR COMPOSITES, Herman Herbert, SUNY-Stony Brook, Materials Science, Stony Brook, NY.

2:30 PM Z7.3
STUDY OF FORGED AND HIPPED SPRAY ATOMIZED AND DEPOSITED Fe-Al ORDERED INTERMETALLIC COMPOUNDS, Lorenzo Martinez, UNAM, Inst de Fisica, Morelos, MEXICO; A. J. Duncan, Oak Ridge National Laboratory, Metals & Ceramics Div,; S. Viswanathan, Oak Ridge National Laboratory, Metals & Cermaics Div, Oak Ridge , TN; O. Flores, UNAM, Inst de Fisica, Morelos, MEXICO; D. Lawrynowics, Univ of California-Irvine, Dept of MS&CE, Irvine, CA; Enrique J. Lavernia, Univ of California-Irvine, Dept of Chem Engr & Matls Science, Irvine, CA.

2:45 PM BREAK

3:15 PM *Z7.4
COMMERCIALIZATION STATUS OF tex2html_wrap_inline681 -BASED ALLOYS, Vinod K. Sikka, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

3:45 PM *Z7.5
PROCESSING, PROPERTIES AND APPLICATIONS OF GAMMA TITANIUM ALUMINIDE SHEET AND FOIL MATERIALS, Helmut Clemens, Plansee AG, Technology Center, Reutte, AUSTRIA.

4:15 PM Z7.6
EFFECT OF INITIAL MICROSTRUCTURE ON THE COMPACTIBILITY OF RAPIDLY SOLIDIFIED Ti-RICH TiAl POWDER, Minoru Nishida, Akira Chiba, Kumamoto Univ, Dept of MS&E, Kumamoto , JAPAN.

4:30 PM *Z7.7
PROCESSING AND PROPERTIES OF NANOCRYSTALLINE INTERMETALLIC COMPOUNDS AND COMPOSITES, R. Bohn, R. Gunther, T. Klassen, S. Wohlert, Th. Pfullmann, R. Bormann, GKSS-Research Center, Inst for Materials Research, Geesthacht, GERMANY.

SESSION Z8: POSTER SESSION: IRON AND NICKEL ALUMINIDES
Chairs: Ronald Gibala Ronald Gibala and Michael J. Mills
Wednesday Evening, December 4, 1996
8:00 P.M.
America Ballroom (W)
Z8.1
EFFECTS OF STRAIN RATE AND TEMPERATURE ON TENSILE PROPERTIES AND FRACTURE MODE IN tex2html_wrap_inline677 , Aidang Shan, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

Z8.2
THE ALLOYING BEHAVIOR OF 3d TRANSITION ELEMENTS IN TERNARY IRON ALUMINIDES, Ian M. Anderson, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge , TN.

Z8.3
THE EFFECT OF Ti ADDITION ON OXIDATION BEHAVIOR OF FeAl INTERMETALLIC ALLOY, Dingqiang Li, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

Z8.4
SHEAR LIGAMENT TOUGHENING AND MICROMECHANICAL MODELLING IN IRON ALUMINIDE INTERMETALLICS, Scott X. Mao, Univ of Calgary, Dept of Mech Engr, Calgary, CANADA.

Z8.5
RESIDUAL STRESS IN A SINGLE-PASS FeAl WELD OVERLAY ON STEEL, Xun-Li Wang, Oak Ridge National Laboratory, Dept of Metals & Ceramics, Oak Ridge, TN; G. M. Goodwin, P. J. Masiasz, C. R. Hubbard, Oak Ridge National Laboratory, Dept of Solid State, Oak Ridge , TN; Z. Feng, Edison Welding Inst, Columbus, OH; S. Spooner, Oak Ridge National Laboratory, Dept of Solid State, Oak Ridge, TN.

Z8.6
ON THE MECHANISM OF MILLING INDUCED DISORDERING IN AlFe, Maria Teresa Clavaguera-Mora, Univ Autonoma Barcelona, Dept Fisica, Bellaterra, SPAIN; Jie Zhu, Univ Autonoma Barcelona, Grup de Fisica Materials I Dept. Fisica, Barcelona, SPAIN; M. Meyer, Luis Mendoza-Zelis, Univ Nacional de La Plata, Dept de Fisica, La Plata, ARGENTINA; Narcis Clavaguera, Univ de Barcelona, Dept Fisica, Barcelona, SPAIN.

Z8.7
LOADING MODE EFFECT ON FRACTURE OF ORDERED AND DISORDERED Fe-Al ALLOYS, Huaxin Li, Pacific Northwest National Laboratory, Richland, WA; Norman S. Stoloff, Rensselaer Polytechnic Inst, Dept of MS&E, Troy, NY; R. H. Jones, Pacific Northwest National Laboratory, Richland, WA.

Z8.8
HIGH VELOCITY FORMING AND DUCTILITY OF INTERMETALLIC COMPOUNDS, Glenn S. Daehn, Michael J. Mills, A. A. Tamhane, Ohio State Univ, Dept of MS&E, Columbus , OH; Chain T. Liu, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

Z8.10
ATOMISTIC SIMULATIONS OF Ti ADDITIONS TO NiAl, Guillermo Bozzolo, Analex Corp, Brook Park, OH; Ronald D. Noebe, John Ferrante, NASA Lewis Research Center, Cleveland, OH; Anita Garg, NASA Lewis Research Center, Materials Div, Cleveland, OH; Carlos Amador, UNAM, Facultad de Quimica, Mexico, MEXICO.

Z8.11
MICROSTRUCTURAL STABILITY OF DIRECTIONALLY SOLIDIFIED EUTECTICS NiAl-Cr AND NiAl-Mo UNDER STATIC AND THERMAL CYCLING CONDITIONS, Matt Kush, Ronald Gibala, Univ of Michigan, Dept of MS&E, Ann Arbor, MI; J W Holmes, Univ of Michigan, Dept of Mech Engr & Applied Mechanics, Ann Arbor, MI.

Z8.12
EFFECT OF Hf/Si RATIO ON THE MICROSTRUCTURE AND CREEP STRENGTH OF SINGLE-CRYSTAL NiAl, Ronald D. Noebe, NASA Lewis Research Center, Cleveland, OH; J. Daniel Whittenberger, Anita Garg, NASA Lewis Research Center, Materials Div, Cleveland, OH; Ram Darolia, GE Aircraft Engines, Cincinnati, OH; Ivan E. Locci, NASA Lewis Research Center, CWRU, Cleveland, OH.

Z8.13
MISFIT PARAMETERS OF POINT DEFECTS IN NiAl AND tex2html_wrap_inline613 -TiAl, Scott A Kajihara, UES Inc, Materials Research Div, Dayton, OH; Lin H Yang, Lawrence Livermore National Laboratory, Physics Div, Livermore, CA; Christopher F. Woodward, UES Inc, Materials Research Div, Dayton, OH.

Z8.14
ATOMISTIC STUDIES OF CRACKS ALONG HIGH-ANGLE GRAIN BOUNDARIES IN NiAl, Diana Farkas, Venkatesh Iyer, Virginia Tech, Dept of MS&E, Blacksburg, VA.

Z8.15
IN SITU TEM OBSERVATIONS OF CROSS-SLIP MECHANISMS IN NiAl WITH SOFT ORIENTATIONS, C. Vailhe, Virginia Tech, Dept of Materials Engr, Blacksburg, VA; Daniel Caillard, CNRS, Dept of CEMES, Toulouse, FRANCE.

Z8.16
A BRITTLE-DUCTILE TRANSITION STUDY OF NiAl SINGLE CRYSTALS, F. C. Serbena, Univ Estadual de Ponta Grossa, Dept de Fisica, Ponta Grossa, BRAZIL; S. G. Roberts, Univ of Oxford, Dept of Materials, Oxford, UNITED KINGDOM.

Z8.17
THE INFLUENCE OF SECOND PHASE TYPE AND DISTRIBUTION ON THE HIGH-TEMPERATURE STRENGTH OF Zr AND Zr/Si-DOPED NiAl SINGLE CRYSTALS, Michael J. Kaufman, Yongjin Lim, Lakshmipathy Manas, Univ of Florida, Dept of MS&E, Gainesville, FL.

Z8.18
INVESTIGATION OF SUPERPLASTIC BEHAVIOR OF NiAl AND tex2html_wrap_inline681 DUPLEX ALLOY, Zhenyun Liu, Yuefeng Gu, Aidang Shan, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

Z8.19
TEM IN SITU STUDY OF DISLOCATION MOTION IN B2 NiAl SINGLE CRYSTALS, Biman Ghosh, Michigan State Univ, Dept of Matls Science & Mech, East Lansing, MI; Martin A. Crimp, Michigan State Univ, Dept of Mats Science & Mech, East Lansing, MI.

Z8.20
INVESTIGATION ON ANNEALING BEHAVIOR OF NANOCRYSTALLINE NiAl, Jianting Guo, Lanzhang Zhou, Inst of Metal Research, Chinese Academy of Sciences, Shenyang, CHINA; Shuhe S.H. Wang, Inst of Metal Research, Chinese Academy of Science, Shenyang, CHINA.

Z8.21
COMPARISON OF THE CREEP PROPERTIES OF AS-CAST AND POWDER METALLURGY-EXTRUDED BINARY NiAl, S. V. Raj, Anita Garg, NASA Lewis Research Center, Materials Div, Cleveland, OH.

Z8.22
THE SOLID SOLUTION ALLOYING EFFECTS OF Ti ON THE HIGH TEMPERATURE DEFORMATION BEHAVIOR OF NiAl SINGLE CRYSTALS, Paul H. Kitabjian, Michael D Uchic, Stanford Univ, Dept of MS&E, Stanford, CA; Ronald D. Noebe, NASA Lewis Research Center, Cleveland, OH; Anita Garg, NASA Lewis Research Center, Materials Div, Cleveland, OH; Uwe Glatzel, Technische Univ Berlin, Inst fur Metallforschung, Berliin, GERMANY; William D. Nix, Stanford Univ, Dept of MS&E, Stanford, CA.

Z8.23
POWDER PROCESSING OF NiAl FOR ELEVATED TEMPERATURE STRENGTH, J. Daniel Whittenberger, NASA Lewis Research Center, Materials Div, Cleveland, OH; Peter Grahle, MWP/Pleuco GmbH, Werkstoffentwicklung und -prufung, Baden-Wurttenberg, GERMANY; Eduard Arzt, Max-Planck-Inst fur Metallforschung, Inst fur Werkstoffwissenschaft, Stuttgart, GERMANY; Mohan Hebsur, NASA Lewis Research Center, Dept of Materials, Cleveland, OH; Klaus Zoltzer, Hessen, GERMANY.

Z8.24
DISLOCATION SUBSTRUCTURE IN NiAl SINGLE CRYSTALS DEFORMED AT AMBIENT TEMPERATURE, Xiaoli Shi, Carnegie Mellon Univ, Dept of MS&E, Pittsburgh, PA; Subhash Mahajan, Carnegie Mellon Univ, Dept of Materials Science, Pittsburgh, PA; Tresa M. Pollock, Carnegie Mellon Univ, Dept of MS&E, Pittsburgh, PA.

Z8.25
STRAIN AGING BEHAVIOR IN NiAl MICROALLOYED WITH INTERSTITIAL AND SUBSTITUTIONAL SOLUTES, Mark L Weaver, Florida A&M Univ, Ctr Nonlinear & Nonequilibrium Aeroscience, Tallahassee, FL; Ronald D. Noebe, NASA Lewis Research Center, Cleveland, OH; Michael J. Kaufman, Univ of Florida, Dept of MS&E, Gainesville, FL.

Z8.26
EFFECT OF DEVIATION FROM STOICHIOMETRY ON DISLOCATION STRUCTURES AND DEFORMATION IN NiAl, Michael J. Mills, Rajagapolan Srinivasan, Michael F. Savage, Ohio State Univ, Dept of MS&E, Columbus, OH; Murray S. Daw, Clemson Univ, Dept of Physics & Astronomy, Clemson, SC; Ronald D. Noebe, NASA Lewis Research Center, Cleveland, OH.

Z8.27
MECHANICAL PROPERTY RESPONSES OF tex2html_wrap_inline697 BASE ALLOYS WITH TERNARY ELEMENTS TO STRAIN RATES AND HIGH TEMPERATURES, Yinmin Wang, Yun Zhang, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

Z8.28
PRACTICAL DESIGN OF tex2html_wrap_inline681 ORDERED ALLOYS WITH HIGH HOT WORKABILITY, Yinmin Wang, Yun Zhang, Shanghai Jiao Tong Univ, Dept of MS&E, Shanghai, CHINA; Dongliang Lin, Shanghai Jiao Tong Univ, Dept of MS, Shanghai, CHINA.

Z8.29
STRAIN-RATE SENSITIVITY OF THE ANOMALOUS YIELD STRESS IN INTERMETALLIC ALLOYS, Yong-Qian Sun, Systran Corp, Dayton, OH; Satish I. Rao, UES Inc, Dayton, OH; Peter M Hazzledine, UES Inc, Dayton, OH.

Z8.30
DISLOCATION STRUCTURES IN tex2html_wrap_inline701 , Bernard Viguier, EPFL, Dept de Physique, Lausanne, SWITZERLAND; Jean Luc Martin, EPFL, Inst de Genie Atomique Dept de Physique, Lausanne, SWITZERLAND; Philippe Spatig, Paul-Scherrer-Inst, Association Euratom, Villigen, SWITZERLAND; Thomas Kruml, EPFL, Dept of Physique, Lausanne, SWITZERLAND.

Z8.31
DISLOCATION DYNAMICS IN Ni tex2html_wrap_inline617 Al AND THE FLOW STRESS ANOMALY, Benoit Devincre, CNRS, LEM ONERA, Chatillon, FRANCE; Patrick Veyssiere, CNRS, LEM ONER, Chatillon, FRANCE.

Z8.32
A DYNAMICAL ANALYSIS OF THE SLIP OF SCREW DISLOCATION IN tex2html_wrap_inline705 ALLOYS, Patrick Veyssiere, CNRS, LEM ONER, Chatillon, FRANCE.

Z8.33
A STUDY OF GRAIN BOUNDARY AND PHASE BOUNDARY SELF-DIFFUSION OF NICKEL IN ALLOYS BASED ON THE INTERMETALLIC COMPOUND tex2html_wrap_inline681 , Irene Spitsberg, Specialty Testing & Equipment Inc, Ithaca, NY; Boris S. Bokstein, Moscow Steel & Alloys Inst, Dept of Physical Chemistry, Moscow, RUSSIA; Samuel Z. Bokstein, Russian Inst of Aviation Materials, Moscow, RUSSIA.

Z8.34
SITE OCCUPANCIES IN tex2html_wrap_inline705 -ORDERED tex2html_wrap_inline711 GAMMA PRIME PHASE IN A Ni-BASE SUPERALLOY, J. Bentley, Ian M. Anderson, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

Z8.35
STRESS RESPONSE BY THE STRAIN-RATE CHANGE IN BINARY, STOICHIOMETRIC tex2html_wrap_inline681 SINGLE CRYSTAL, Masahiko Demura, Nat Research Inst for Metals, Chemical Processing Div, Ibaraki, JAPAN; Toshiyuki Hirano, Nat Research Inst for Metals, Ibaraki, JAPAN.

Z8.37
SEM OBSERVATIONS OF CRACK INITIATION IN NOTCHED POLYCRYSTALS OF Ni-RICH Ni tex2html_wrap_inline617 Al-B DEFORMED IN-SITU, Y. Xu, Dartmouth College, Thayer School of Engineering, Hanover, NH; Erland M. Schulson, Dartmouth College, Thayer School of Engr, Hanover, NH; M. Ignat, St-Martin d'Heres, FRANCE.

Z8.38
NOTCH-TIP DEFORMATION OF Ni tex2html_wrap_inline617 Al SINGLE CRYSTALS, Y. Xu, Dartmouth College, Thayer School of Engineering, Hanover, NH; Erland M. Schulson, Dartmouth College, Thayer School of Engr, Hanover, NH.

Z8.39
LOW CYCLE FATIGUE OF FeAl (42 at % Al) AT ROOM TEMPERATURE, David B. Hanes, Stirling Thermal Motors, Ann Arbor, MI; Ronald Gibala, Univ of Michigan, Dept of MS&E, Ann Arbor, MI.

Z8.40
ANNEALING OF COLD-ROLLED Fe-40 AT.% Al SINGLE CRYSTALS, Yong Yang, Ian Baker, Dartmouth College, Thayer School of Engineering, Hanover, NH.

Z8.41
THE YIELD STRENGTH ANOMALY IN FeAl, Ian Baker, Dartmouth College, Thayer School of Engineering, Hanover, NH; Easo P. George, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN.

Z8.42
STRENGTH, THERMAL DEFECTS, AND SOLID SOLUTION HARDENING IN NICKEL-CONTAINING B2 IRON ALUMINIDES, J. H. Schneibel, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN; Paul R. Munroe, Univ of New South Wales, Dept of MS&E, Sydney, AUSTRALIA; L. M. Pike, Univ of Wisconsin-Madison, Dept of MS&E, Madison, WI.

Z8.43
FABRICATION OF NiAl INTERMETALLICS FROM DENSE ELEMENTAL POWDER BLENDS VIA SOLID STATE REACTIONS, Leonid Farber, Technion-Israel Inst of Tech, Dept of Matls Engr, Haifa, ISRAEL; Irena Gotman, Elazar Gutmanas, Technion-Israel Inst of Tech, Dept of Matls Engr, Haifa, ISRAEL.

Z8.44
CREEP IN SINGLE CRYSTAL Ni3Al, Wenhua Zhu, Ian P. Jones, Univ of Birmingham, School of Metallurgy & Materials, Birmingham, UNITED KINGDOM; R. E. Smallman, Univ of Birmingham, School of Metallurgy & Materials, Birmingham, UNITED KINGDOM.

SESSION Z9: POSTER SESSION: OTHER INTERMETALLICS
Chairs: Sharvan Kumar and Mohamed Nazmy
Wednesday Evening, December 4, 1996
8:00 P.M.
America Ballroom (W)
Z9.1
EFFECT OF MICROSTRUCTURE ON THE PROPERTIES OF MOSI tex2html_wrap_inline719 AND ITS COMPOSITES, Aron E Newman, SUNY-Stony Brook, Dept of MS&E, Stony Brook, NY; Sanjay Sampath, SUNY-Stony Brook, Dept of MS&E, Stony Brook, NY; Herbert Herman, SUNY-Stony Brook, Dept of MS&E, Stony Brook, NY.

Z9.2
MICROSTRUCTURAL EFFECTS ON THE ELEVATED TEMPERATURE BEHAVIOR OF tex2html_wrap_inline721 COMPOSITES, Sethuraman Jayashankar, Michael J. Kaufman, Univ of Florida, Dept of MS&E, Gainesville, FL.

Z9.3
STACKING FAULTS ON (001) IN TRANSITION-METAL DISILICIDES WITH THE C11b STRUCTURE, K. Ito, Univ of Pennsylvania, Dept of MS&E, Philadelphia, PA ; T. Nakamoto, H. Inui, M. Yamaguchi, Kyoto University, Dept of MS&E, Kyoto, JAPAN.

Z9.4
PLASTIC DEFORMATION OF tex2html_wrap_inline723 SINGLE CRYSTALS WITH THE C40 STRUCTURE, K. Ito, Univ of Pennsylvania, Dept of MS&E, Philadelphia, PA ; M. Moriwaki, H. Inui, M. Yamaguchi, Kyoto University, Dept of MS&E, Kyoto, JAPAN.

Z9.5
PREPARATION, STRUCTURE AND MECHANICAL PROPERTIES OF RuAl AND (Ru,Ni)Al ALLOYS, Antonio Luiz Ribeiro Sabariz, Glyn Taylor, Univ of Oxford, Dept of Materials, Oxford, UNITED KINGDOM.

Z9.6
SITE OCCUPANCIES IN TERNARY C15 ORDERED LAVES PHASES, Paul G. Kotula, Los Alamos National Laboratory, Ctr for Materials Science, Los Alamos, NM; Ian M. Anderson, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge , TN; Fuming Chu, Los Alamos National Laboratory, Center for Materials Science, Los Alamos, NM; Dan Thoma, Los Alamos National Laboratory, Dept of MST-6, Los Alamos, NM; J. Bentley, Oak Ridge National Laboratory, Metals & Ceramics Div, Oak Ridge, TN; Terence E. Mitchell, Los Alamos National Laboratory, Center for Materials Science, Los Alamos, NM.

Z9.7
ELASTIC CONSTANTS OF A LAVES PHASE COMPOUND: C15 NbCr tex2html_wrap_inline719 , Alim H. Ormeci, Koc Univ, Dept of Physics, Istanbul, TURKEY; Shao-Ping Chen, Robert C. Albers, Los Alamos National Laboratory, Theoretical Div, Los Alamos, NM; Fuming Chu, Los Alamos National Laboratory, Center for Materials Science, Los Alamos, NM; Terrence E. Mitchell, Los Alamos National Laboratory, Matls Science & Tech Div, Los Alamos, NM; Dan Thoma, Los Alamos National Laboratory, Dept of MST-6, Los Alamos, NM; John M. Wills, Los Alamos National Laboratory, Theoretical Div, Los Alamos, NM.

Z9.8
PSEUDO TWINNING IN ORTHORHOMBIC tex2html_wrap_inline727 SUPERLATTICES AND FORMATION OF A SUPERSTRUCTURE WITH TETRAGONAL SYMMETRY: CRYSTALLOGRAPHY AND OBSERVATIONS, Mukul Kumar, Johns Hopkins Univ, Dept of Mech Engr, Baltimore, MD; Vijay K. Vasudevan, Univ of Cincinnati, Dept of MS&E, Cincinnati, OH.

Z9.9
SLIP CREEP OF tex2html_wrap_inline729 , Matthew Lunt, Univ of Oxford, Dept of Materials, Oxon, UNITED KINGDOM; Yong-Qian Sun, Systran Corp, Dayton, OH.

Z9.10
ANOMALOUS TEMPERATURE DEPENDENCE OF YIELD STRESS AND WORK HARDENING COEFFICIENT OF B2-STABILIZED NiTi ALLOYS, Hideki Hosoda, JUTEMI, NEDO, Yamaguchi, JAPAN; Yoshinao Mishima, Tokyo Inst of Technology, Precision & Intelligence Lab, Kanagawa, JAPAN; Tomoo Suzuki, Tokyo Inst of Technology, Dept of Mechanical Engr, Tokyo, JAPAN.

Z9.11
RELATING MECHANICAL PROPERTIES WITH DISLOCATION CORES IN tex2html_wrap_inline731 INTERMETALLIC ALLOYS, T. John Balk, Mukul Kumar, Kevin J. Hemker, Johns Hopkins Univ, Dept of Mech Engr, Baltimore, MD.

Z9.12
CHEMISTRY, BONDING AND MECHANCAL PROPERTIES OF GRAIN BOUNDARIES IN tex2html_wrap_inline733 , Shanthi Subramanian, Cornell Univ, Dept of MS&E, Ithaca, NY; David A. Muller, John Silcox, Cornell Univ, Dept of Applied & Engr Physics, Ithaca, NY; Stephen L. Sass, Cornell Univ, Dept of MS&E, Ithaca, NY.

Z9.13
DEFORMATION BEHAVIOR OF tex2html_wrap_inline735 ORDERED FePd ALLOYS, Maithri Rao, William A. Soffa, Univ of Pittsburgh, Dept of MS&E, Pittsburgh, PA.

Z9.14
DEFORMATION AROUND THE ORDER/DISORDER TRANSFORMATION TEMPERATURE IN Ti-MODIFIED Nb ALUMINIDES, Steven C. Johnson, Duen-Huei Hou, Robert Wheeler, Hamish L. Fraser, Ohio State Univ, Dept of MS&E, Columbus, OH.

Z9.15
MICROSTRUCTURAL EVOLUTION IN A 37Nb-37Ti-26Al INTERMETALLIC ALLOY, Giridhar Narayanan, Univ of Cincinnati, Cincinnati, OH; Vijay K. Vasudevan, Univ of Cincinnati, Dept of MS&E, Cincinnati, OH.

Z9.16
MECHANISM FOR TENSILE YIELD POINT AND SERRATED FLOW BEHAVIOR IN Nb-15Al-40Ti, Srikanth M. Perungulam, Robert Wheeler, Hamish L. Fraser, Ohio State Univ, Dept of MS&E, Columbus, OH; Srikumar Banerjee, BARC, Metallurgy Div, Bombay, INDIA.

Z9.17
CONCERNING THE MEANING OF THE HALL-PETCH INTERCEPT, tex2html_wrap_inline737 , Coimbatore Iswaran, Michael J. Kaufman, Robert E. Reed-Hill, Univ of Florida, Dept of MS&E, Gainesville, FL.

Z9.18
PHASE RELATION AND MICROSTRUCTURE OF NbCr2 LAVES INTERMETALLICS IN TERNARY Nb-Cr-X ALLOY SYSTEMS, Mitsuhiko Yoshida, Miyagi, JAPAN; Takayuki Takasugi, Tohoku Univ, Inst for Materials Research, Sendai, JAPAN.

SESSION Z10: COMPOSITES
Chairs: R. Bormann and Michael J. Kaufman
Thursday Morning, December 5, 1996
Salon A/B (M)
8:30 AM *Z10.1
LAVES PHASE AND NIOBIUM-SILICIDE BASED DIRECTIONALLY SOLIDIFIED IN SITU COMPOSITES, B. P. Bewlay, GE Corp, Research & Development Center, Schenectady, NY; M. R. Jackson, GE Corp, Research & Development, Schenectady, NY; H. A. Lipsitt, Wright State Univ, Dept of Mech & Matls Engr, Dayton, OH.

9:00 AM *Z10.2
MECHANICAL BEHAVIOR OF MOLYBDENUM-MODIFIED tex2html_wrap_inline739 INTERMETALLIC ALLOYS, Mohamed Nazmy, C. Noseda, ABB Power Generator Ltd, Dept of Materials Technology, Baden, SWITZERLAND; S. Augustin, P. Lipetzky, Rensselaer Polytechnic Inst, Dept of MS&E, Troy, NY; Norman S. Stoloff, Rensselaer Polytechnic Inst, Dept of MS&E, Troy, NY.

9:30 AM Z10.3
CREEP BEHAVIOR OF MOLYBDENUM DISILICIDE AND ITS COMPOSITES, C. R. Feng, K. Sadananda, Naval Research Laboratory, Matls Science & Tech Div, Washington, DC.

9:45 AM BREAK

10:00 AM Z10.4
PROCESSING, STRUCTURE AND PROPERTIES OF BULK AND FIBER-REINFORCED NiAl BY REACTIVE INFILTRATION, T. A. Venkatesh, Christopher San Marchi, Andreas Mortensen, David C. Dunand, MIT, Cambridge, MA.

10:15 AM *Z10.5
EFFECTS OF RHENIUM ALLOYING ON THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF DIRECTIONALLY SOLIDIFIED NiAl-MoAND NiAl-Cr EUTECTICS, A. Misra, Univ of Michigan, Dept of MS&E, Ann Arbor, MI; Z. L. Wu, Ford Motor Co, Ypsilanti, MI; Ronald Gibala, Univ of Michigan, Dept of MS&E, Ann Arbor, MI.

10:45 AM Z10.6
MICROSTRUCTURE-PROPERTY RELATIONS IN TWO-PHASE INTERMETALLICS CONTAINING A DUCTILE PHASE, Amit K. Ghosh, Sion M. Pickard, Univ of Michigan, Dept of MS&E, Ann Arbor, MI.

11:00 AM Z10.7
MECHANICAL BEHAVIOR OF REACTIVE HOT PRESSED ALUMINIDES MATRIX COMPOSITES, Masahiro Inoue, National Defense Academy, Dept of MS&E, Yokosuka, JAPAN; Katsuaki Suganuma, Osaka Univ, Inst of Scientific & Industrial Res, Ibaraki, JAPAN.

11:15 AM Z10.8
ALUMINA-ALUMINIDE ALLOYS (3A) COMPOSITES, Daniel E. Garcia, Nils Claussen, Jorn Bruhn, Silvia Schicker, Rolf Janssen, Technische Univ Hamburg, Adv Ceramics Group, Hamburg, GERMANY.

11:30 AM Z10.9
MICROMECHANICS OF FATIGUE AND FRACTURE IN LOW SYMMETRY INTERMETALLICS, Bimal Kad, Univ of California-San Diego, Dept of AMES, La Jolla, CA; Robert J. Asaro, Univ of California-San Diego, Dept of Applied Mech & Engr Science, La Jolla, CA.

11:45 AM Z10.10
tex2html_wrap_inline741 MORPHOLOGY IN AN OXIDE DISPERSION STRENGTHENED FeAl ALLOY PREPARED BY MECHANICAL ALLOYING, Beverley Inkson, Max-Planck-Inst, Inst fur Werkstoffwissenshaft, Stuttgart, GERMANY; Philip Threadgill, The Welding Institute, Abington, UNITED KINGDOM.

SESSION Z11: REFRACTORY/INTERMETALLICS
Chairs: Madan G. Mendiratta and Tomoo Suzuki
Thursday Afternoon, December 5, 1996
Salon A/B (M)
1:30 PM *Z11.1
THE ORDERED STATE OF ALLOYED INTERMETALLICS: THE ORDERING TIE-LINE, Duen-Huei Hou, Ohio State Univ, Dept of MS&E, Columbus, OH; Ian P. Jones, Univ of Birmingham, School of Materials & Metallurgy, Birmingham, UNITED KINGDOM; Srikumar Banerjee, BARC, Metallurgy Div, Bombay, INDIA; Rajarshi Banerjee, Robert Wheeler, Hamish L. Fraser, Ohio State Univ, Dept of MS&E, Columbus, OH.

2:00 PM *Z11.2
OVERVIEW OF RESEARCH ON REFRACTORY METAL BASED INTERMETALLIC SYSTEMS, P. R. Subramanian, Madan G. Mendiratta, UES Inc, Dayton, OH; Dennis M. Dimiduk, Air Force Wright Laboratory, WL/MLLM Materials Directorate, Wright Patterson AFB, OH.

2:30 PM Z11.3
THE MECHANICAL BEHAVIOUR AND DEFORMATION MECHANISMS OF Nb-Al-V ALLOYS , David Keith Tappin, Mark Aindow, David Horspool, Univ of Birmingham, School of Metallurgy & Materials, Birmingham, UNITED KINGDOM; Lee Smith, Welding Inst, Cambridge, UNITED KINGDOM; Ian P. Jones, Univ of Birmingham, School of Metallurgy & Materials, Birmingham, UNITED KINGDOM.

2:45 PM Z11.4
AN INVESTIGATION OF THE EFFECTS OF TEMPERATURE AND ENVIRONMENT ON THE FATIGUE CRACK GROWTH BEHAVIOR OF DAMAGE TOLERANT NIOBIUM ALUMINIDE INTERMETALLICS, Winston O. Soboyejo, J. DiPasquale, F. Ye, Ohio State Univ, Dept of MS&E, Columbus, OH.

3:00 PM BREAK

3:30 PM *Z11.5
LAVES PHASE-BASED MATERIALS: MICROSTRUCTURE, DEFORMATION MODES AND PROPERTIES, Sharvan Kumar, Brown Univ, Engineering Div, Providence, RI.

4:00 PM Z11.6
COMPARISON OF tex2html_wrap_inline743 AND tex2html_wrap_inline745 C15 LAVES PHASES, Dan Thoma, Los Alamos National Laboratory, Dept of MST-6, Los Alamos, NM; Fuming Chu, Los Alamos National Laboratory, Center for Materials Science, Los Alamos, NM; John M. Wills, Los Alamos National Laboratory, Theoretical Div, Los Alamos, NM; Terence E. Mitchell, Los Alamos National Laboratory, Center for Materials Science, Los Alamos, NM.

4:15 PM Z11.7
ASSESSMENT OF THE COMPOSITIONAL INFLUENCES ON MECHANICAL PROPERTIES OF tex2html_wrap_inline747 -BASE LAVES PHASE ALLOYS, Katherine C. Chen, Los Alamos National Laboratory, Los Alamos, NM; Samuel M. Allen, James D. Livingston, MIT, Dept of MS&E, Cambridge, MA.

4:30 PM Z11.8
PLATINUM GROUP METALS BASE REFRACTORY SUPERALLOYS, Yoko Yamabe, Yutaka Koizumi, Hideyuki Murakami, Yoshikazu Ro, Nat Research Inst for Metals, Computational Matls Div, Ibaraki, JAPAN; Tomohiro Maruko, Furuya Metals Co Ltd, Technical Research Ctr, Ibaraki, JAPAN; Hiroshi Harada, Nat Research Inst for Metals, Computational Matls Div, Ibaraki, JAPAN.

4:45 PM Z11.9
HIGH-TEMPERATURE MECHANICAL BEHAVIOR OF B2 TYPE IrAl DOPED WITH Ni, Akihiko Chiba, T. Ono, Xing Guo Li, S. Takahashi, Iwate Univ, Dept of MS&E, Moriaka, JAPAN.