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1991 Fiscal Year Final Research Report Summary

"Microstructures and phase stability of rapidly solidified intermetalic compounds

Research Project

Project/Area Number 01420041
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 金属材料(含表面処理・腐食防食)
Research InstitutionTokyo Institute of Technology

Principal Investigator

SUZUKI Tomoo  Tokyo Institute of Technology, Department of Metallurgical Engineering, Professor, 工学部, 教授 (80016782)

Co-Investigator(Kenkyū-buntansha) YOSHIMURA Masahiro  Tokyo Institute of Technology, Research Laboratory of Engineering Materials, Pro, 工業材料研究所, 教授 (10016826)
MIURA Seiji  Tokyo Institute of Technology, Precision and Intelligence Laboratory, Research A, 精密工学研究所, 助手 (50199949)
MISHIMA Yoshinao  Tokyo Institute of Technology, Precision and Intelligence Laboratory, Associate, 精密工学研究所, 助教授 (00143660)
Project Period (FY) 1989 – 1991
KeywordsIntermetallic Compounds / Rapid Solidification / Microstructure / Crystal structure / Non-equilibrium Phases / Phase Stability
Research Abstract

The research works which are regarding with rapid solidification of some intermetalic compounds can be summarized as follows ;
(1) From the observations for microstructures of rapidly solidified TiAl alloys, informations for phase boundaries among alpha titanium, Ti_3Al and TiAl in the titanium-aluminum binary equilibrium phase diagram which have not been established were estimated.
(2) From the results of systematic investigation for the effect of ternary elements on the tendency of metastable phases appearance in rapidly solidified Ni_3Al alloys, it was revealed that additional elements which inhibit the appearance of meta-stable phases have effects of improving the plasticity of Ni_3Al alloys.
Although it was not apparent the relationships between these two phenomena, this results would give an effective way of improvement for the lack of plasticity that is considered as a neck for application of interm etallic compounds to structural materials.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Yoshinao Mishima,Shirou Sasaki and Tomoo Suzuki: "Microstructures of Ni_3Al Rapidly Solidified by Hammer-Anvil Technique" Alloy Phase Stability and Design,Eds.,G.M.Stocks,D.P.Pope and A.F.Giamei,Materials Research Society Symposia Proceedings.186. 335-340 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Equo Kobayashi,Seiji Miura,Yoshinao mishima and Tomoo Suzuki: "Microstructures of Rapidly solidified Ti-Al(50-60at%Al) Binary alloys" Proceedings of International symposium on Intermetallic Compounds-Structure and Mechanical Properties (JIMIS-6),Ed.,O.Izumi,The Japan Institute of Metals,. 245-250 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三井 和博,三島 良直,鈴木 朝夫: "規則合金の2段規則化と過剰空孔の役割" 日本金属学会報,. 28. 393-401 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kazuhiro Mitsui,Yoshinao Mihsima and Tomoo Suzuki: "The Role of Excess Vacancics in Two-Stage ordering in Ordered Alloys" Philosophical magazine A,. 59. 123-140 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kazuhiro Mitsui,yoshinao Mishima and Tomoo Suzuki: "Heterogeneous Ordering in Super Lattice Alloys" Philosophical Magazine B,. 62. 395-414 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshinao Mishima, Shirou Sasaki and Tomoo Suzuki: "Microstructures of Ni_3Al Rapidly solidified by Hammer-Anvil Technique" Alloy phase Stability and Design. Materials Research Society symposia Proceedings. 186, Materials Research Society. 335-340 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Equo Kobayashi, Seiji Miura, Yoshinao Mishima and Tomoo Suzuki: "Microstructures of Rapidly Solidified Ti-Al (50-60at%Al) Binary Alloys" Proceedings of International Symposium on Intermetallic Compounds -Structure and Mechanical Properties (JIMIS-6). The Japan Institute of Metals. 245-250 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kazuhiro Mitsui, Yoshinao Mishima and Tomoo Suzuki: "Two Stage Ordering and Excess Vacancy in Ordered Alloys" Bulletin of the Japan Institute of Metals. 28. 393-401 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kazuhiro Mitsui, Yoshinao Mishima and Tomoo Suzuki: "The Role of Excess Vacancies in Two-stage Ordering in Ordered Alloys" Philosophical Magazine A. 59. 123-140 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kazuhiro Mitsui, Yoshinao Mishima and Tomoo Suzuki: "Heterogeneous Ordering in Superlattice Alloys" Philosophical Magazine B. 62. 395-414 (1990)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-16  

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