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Origin of particle shape of pseudo-polyhedral precipitates in alloys

Research Project

Project/Area Number 19560690
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Composite materials/Physical properties
Research InstitutionTokyo Institute of Technology

Principal Investigator

ONAKA Susumu  Tokyo Institute of Technology, 大学院・総合理工学研究科, 教授 (40194576)

Co-Investigator(Kenkyū-buntansha) KATOU Masaharu  東京工業大学, 総合理工学研究科, 教授 (50161120)
FUJII Toshiyuki  東京工業大学, 総合理工学研究科, 准教授 (40251665)
Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords表面 / 界面 / 析出物 / 平衡形状 / 擬多面体 / 微粒子
Research Abstract

微量なAgを含むCu合金など,適当な組成の合金を高温域で保持すると,固体内拡散で合金を構成する原子が移動し,析出物と呼ばれる粒子が形成される.この析出物の形状や大きさは材料における種々の性質を支配するため,どういった機構により析出物の形状や大きさが決定されているかを解明することは,工業的にも学術的にも極めて重要である.本研究は,合金中に析出する擬多面体形状(多面体に近いものの丸い角を持つ形状)の析出物を観察し,その形状が何によって決まっているかを明らかにした研究である.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (14 results)

All 2010 2009 2008 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (9 results)

  • [Journal Article] Deformation Behavior and Str ess States of a Diffusional Creeping Polycryst al with Bimodal Grain-size Distribution2010

    • Author(s)
      S. Onaka
    • Journal Title

      Archives of Mechanics (印刷中)

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of magnetic field on shape evolution of Fe-Co particles in a Cu matrix2009

    • Author(s)
      C. Kanno
    • Journal Title

      Philosophical Magazine A 89

      Pages: 747-759

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Geometrical Analysis of Near Polyhedral Shapes with Round Edges in Small Crystalline Particles or Precipitates2008

    • Author(s)
      S. Onaka
    • Journal Title

      Journal of Materials Science 43

      Pages: 2680-2685

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Deformation Behavior and Stress States of a Diffusional Creeping Polycrystal with Bimodal Grain-size Distribution

    • Author(s)
      S.Onaka
    • Journal Title

      Archives of Mechanics (印刷中)(In press)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Geometrical Analysis of Near Polyhedral Shapes with Round Edges in Small Crystalline Particles or Precipitates

    • Author(s)
      S. Onaka
    • Journal Title

      Journal of Materials Science (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Shape Transitions of Ag Precipitates during Aging in Cu-Ag Single Crystals2010

    • Author(s)
      T. Miyazawa, T. Fujii, S. Onaka, M. Kato
    • Organizer
      ISPlasma2010, 2nd International Symposium on Advanced Plasma Science and its Applications
    • Place of Presentation
      名古屋, 名城大学
    • Year and Date
      2010-03-07
    • Related Report
      2009 Final Research Report
  • [Presentation] Shape Transitions of Ag Precipitates during Aging in Cu-Ag Single Crystals2010

    • Author(s)
      T.Miyazawa
    • Organizer
      ISPlasma 2010, 2^<nd> International Symposium on Advanced Plasma Science and its Applications
    • Place of Presentation
      名古屋,名城大学
    • Year and Date
      2010-03-07
    • Related Report
      2009 Annual Research Report
  • [Presentation] 溶体化処理後連続時効によりCu母相内に析出したCo粒子の形状2009

    • Author(s)
      小澤雄太, 宮澤知孝, 藤居俊之, 尾中晋, 加藤雅治
    • Organizer
      日本金属学会, 第145回秋季大会
    • Place of Presentation
      京都, 京都大学
    • Year and Date
      2009-09-15
    • Related Report
      2009 Final Research Report
  • [Presentation] 尾中晋, Cu-Ag合金単結晶に孤立析出したAg粒子の時効による形状変化2009

    • Author(s)
      宮澤知孝, 加藤雅治, 藤居俊之
    • Organizer
      日本金属学会, 第14 5回秋季大会
    • Place of Presentation
      京都, 京都大学
    • Year and Date
      2009-09-15
    • Related Report
      2009 Final Research Report
  • [Presentation] Cu-Ag合金単結晶に孤立析出したAg粒子の時効による形状変化2009

    • Author(s)
      宮澤知孝
    • Organizer
      日本金属学会
    • Place of Presentation
      京都,京都大学
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] 溶体化処理後連続時効によりCu母相内に析出したCo粒子の形状2009

    • Author(s)
      小澤雄太
    • Organizer
      日本金属学会
    • Place of Presentation
      京都,京都大学
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] Cu母相中のCo-Fe粒子の磁場中時効による形状変化2008

    • Author(s)
      菅野 千尋
    • Organizer
      日本金属学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2008-09-24
    • Related Report
      2008 Annual Research Report
  • [Presentation] 材料組織における形の由来:球と多面体のあいだの形状を持つ合金中の微粒子2008

    • Author(s)
      尾中晋
    • Organizer
      日本鉄鋼協会, 材料の組織と特性部会自主フォーラム「鉄鋼材料の結晶界面制御と特性」
    • Place of Presentation
      宮城県大崎市幸雲閣
    • Year and Date
      2008-01-04
    • Related Report
      2009 Final Research Report
  • [Presentation] 材料組織における形の由来:球と多面体のあいだの形状を持つ合金中の微粒子2008

    • Author(s)
      尾中 晋
    • Organizer
      日本鉄鋼協会, 杉料の組織と特性部会自主フォーラム「鉄鋼材料の結晶界面制御と特性」
    • Place of Presentation
      宮城県大崎市幸雲閣
    • Year and Date
      2008-01-04
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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