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Investigation of Microscopic Mechanisms of Phase Transformations for the Structure Control of Materials

Research Project

Project/Area Number 09242107
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KOIWA Masahiro  Kyoto University, Department of Materials Science, Professor Emeritus, 工学研究科, 名誉教授 (00005860)

Co-Investigator(Kenkyū-buntansha) SUZUKI Tetsuro  Tsukuba Institute of Science and Technology, Professor, 産学共同推進機構, 教授 (70045988)
FUJITA Eiichi  Osaka University, Department of Physical Science, Professor Emeritus, 基礎工学部, 名誉教授 (90029380)
OTSUKA Kazuhiro  University of Tsukuba Institute of Materials Science, Professor Emeritus, 物質工学系, 名誉教授 (50029881)
IWASAKI Hiroshi  Ritsumeikan University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (50005857)
MASUMOTO Tsuyoshi  The Research Institute of Electrical and Magnetic Materials, Director, 所長 (20005854)
Project Period (FY) 1997 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥24,800,000 (Direct Cost: ¥24,800,000)
Fiscal Year 2000: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥7,700,000 (Direct Cost: ¥7,700,000)
Fiscal Year 1998: ¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1997: ¥6,500,000 (Direct Cost: ¥6,500,000)
KeywordsEnergy-filtering method / Electron Diffraction / Diffuse scattering / Phase transformation under external fields / Ordering process / Martensitic aging / Rubber-like behavior / Microstructure control / 変位型相変態 / マルテンサイト変態 / 拡散型変態 / 規則-不規則変態 / 金属間化合物 / 形状記憶合金 / 準結晶 / 点欠陥 / 自己拡散 / 構造型空孔 / 拡散型相変態 / 回折的手法 / 計算科学的手法 / 回析的手法
Research Abstract

The project team was organized in the following five groups :
1. The development of diffraction techniques for studying phase transformations
2. The development of computational techniques for studying phase transformations
3. The investigation of microscopic mechanisms for diffusional transformations
4. New development of displacive transformations
5. Investigations of phase transformations under special conditions/environment
The following three investigations are particularly alluded for their remarkable achievements.
(1) Developments of quantitative electron microscopy utilizing the energy-filtering electron diffraction and its application to the analyses of phase transformation processes
(2) Microstructure control by applying external stress or magnetic fields during the order-disorder transformation of FePd
(3) A new interpretation of the mechanism for the development of rubber-like behavior of Au-Cd alloys by annealing in martensitic state
The papers based on the results of the present project have been published in :
Proceedings of the International Conference on Solid-Solid Phase Transformations '99",
Edited by M.Koiwa et al, The Japan Institute of Metals, November 1999. A special issue of Materials Science and Engineering, A (Elsevier), to be publilshed in the autumn of 2001, will be devoted to those papers contributed from the research members of the present project : "Special issue on Microscopic Mechanisms of Phase Transformations"

Report

(5 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] K.Hiraga: "Ordered structures in decagonal quasicrystals with simple and body-centered hypercubic lattices"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] D.Shindo: "Energy-filtered electron microscopy study on phase transformation of alloys"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Miyazaki: "Computer simulations of the phase transformation in real alloy systems based on the phase field method"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Koiwa: "Effect of external fields on ordering of FePd"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Otsuka: "Mechanism of martensite aging effects and new aspects"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] O.Nittono: "Thermal stability and hardness of metastable Co-C composite alloy films"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Hiraga: "Ordered structures in decagonal quasicrystals with simple and body-centered hypercubic lattices"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] D.Shindo: "Energy-filtered electron microscopy study on phase transformation of alloys"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Miyazaki: "Computer simulations of the phase transformation in real alloy systems based on the phase field method"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Koiwa: "Effect of external fields on ordering of FePd"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Otsuka: "Mechanism of martensite aging effects and new aspects"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] O.Nittono: "Thermal stability and hardness of metastable Co-C composite alloy films"Materials Science and Engineering, A. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Ichitsubo: "Kinetics of cubic to tetragonal transformation under external field by the time-dependent Ginzburg-Landau approach"Physical Review B. 62. 5435-5441 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Hiraga: "An ordered arrangement of atom columnar clusters in a pentagonal quasiperiodic lattice of an Al-Ni-Co decagonal quasicrystal"Philosophical Magazine Letter. 80. 653-659 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Zumkley: "Solute diffusion of Ni in icosahedral Al-Pd-Mn quasicrystals"Philosophical Magazine Part A. 80. 1065-1074 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] X.Ren: "Universal symmetry property of point defects in crystals"Physical Review Letters. 85. 1016-1019 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] J.Ye: "Growth of III_2 VI_3 compound semiconductor(Ga_xIn_<1-x>)_2Se_3 single crystals with giant optical activity for visible and infrared light"J.Appl.Phys.. 87. 933-938 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Miyazaki: "Determination of the critical nucleus size of precipitates using the macroscopic composition gradient method"Metal.Mater.Trans.A. 30. 2783-2789 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] T. Ichitsubo: "Configurational free energy in order-disorder transitions from Monte Carlo calculations for systems under external fields"Physical Review B. 63・13. 9198-9201 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Ichitsubo: "Effect of Applied Stress on Ordering of FePd"Solid -Solid Phase Transformations, PTM '99. 385-388 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Ichitsubo: "Formation of preferentially oriented structure of ordered FePd under external stress"Solid-Solid Phase Transformations, PTM '99. 389-392 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Numakura: "Points defects and diffusion in Ni_3Al"Solid-Solid Phase Transformations, PTM '99. 465-472 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] X. Ren: "Do "Constitutional Vacancies" in Intermetallic Compounds Exist?"Scripta Materialia. 41・9. 907-913 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Otsuka: "Recent Developments in the Research of Shape Memory Alloys"Intermetallics. 7. 511-528 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Koiwa: "Diffusion in Materials-History and Recent Developments" Materials Transactions, JIM. 39・12. 1169-1179 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Numakura: "Self-diffusion mechanism in Ni-based L1_2 type intermetallic compounds" Philesophical Magazine A. 77・4. 887-909 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Otsuka: "Recent Studies on the β_2-ζ_2'(Trigonal) Martensitic Transformation in Au-Cd Alloys" Displactive Phase Transformations and Their Applications in Materials Engineering. 167-176 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] X.Ren: "The Role of Softening in Elastic Constant c_<44> in Martensitic Transformation" Scripta Materialia. 38・11. 1669-1675 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Tobise: "Structure and Magnetic Properties of Sm-Fe-Ti-B-N Powders Produced by HDDR and Nitriding Processes" Proc.15th International Workshop on R.E.Magnets and Their Applications. 517 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Miyazaki: "Computational Investigations on the Microstructure Formation in Metallic Materials Based upon the Phase Field Method" The Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3). 1225-1232 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Koiwa: "Diffusion in L1_2 Type Intermetallic Compounds." Defect and Diffusion Forum. 143・147. 209-222 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Ichitsubo: "Effect of applied stress on fcc-L1_0 Transformation of FePd single Crystal" Materials Transactions,JIM. 39・1. 24-30 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] X.Ren: "A Study of the Rubber-like Behavior of Mono-Domain Au-Cd Martensite" Mat.Res.Soc.Symp.Proc.459. 305-310 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] X.Ren: "Origin of Rubber-like Behavior in Metal Alloys" Nature. 389・6651. 579-582 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.M.Mebed: "Computer Simulation of A2/B2 Second-Order Phase Transition Based upon the Khachaturyan Diffusion Equation" J.Mater.Su.32. 5797-5804 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Miyazaki: "Experimental and Theoretical Investigations on Phase Diagram of Fe-base Ternary Order in Alloys" J.Chem.Phys.94. 844-848 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2019-02-15  

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