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Phase Stability of Intermetallic Compounds of Co_3X Type GCP Phase and Co_2X Type Laves Phase

Research Project

Project/Area Number 21760514
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Physical properties of metals
Research InstitutionTohoku University

Principal Investigator

OMORI Toshihiro  Tohoku University, 大学院・工学研究科, 助教 (60451530)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords金属間化合物 / GCP相 / ラーベス相 / 相安定性 / 相平衡 / 状態図 / Co合金
Research Abstract

Phase equilibria have been experimentally determined mainly in Co-W and Co-Mo base ternary systems, and assessed by using the computational thermodynamics called CALPHAD technique. The phase stability of the L1_2, D0_<19> and Laves phases has particularly been investigated. These results are useful for alloy design of Co-based alloys such as heat resistant materials, wear resistant materials and medical materials.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (12 results)

All 2011 2010 2009

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (6 results)

  • [Journal Article] Phase Transformations in the B2 Phase of Co-rich Co-Al Binary Alloys2011

    • Author(s)
      K.Niitsu、T.Omori、M.Nagasako、K.Oikawa、R.Kainuma, K.Ishida
    • Journal Title

      Journal of Alloys and Compounds 509巻

      Pages: 2698-2702

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Phase Transformation in the B2 phase of Co-rich Co-Al Binary Alloys2011

    • Author(s)
      K.Niitsu, T.Omori, M.Nagasako, K.Oikawa, R.Kainuma, K.Ishida
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 509 Pages: 2697-2702

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase Stability of the L1_2 Compound and Microstructural Changes in Co-(Wor Mo)-Ta Ternary Alloys2010

    • Author(s)
      H.Chinen、T.Omori、K.Oikawa、I.Ohnuma、 R.Kainuma, K.Ishida
    • Journal Title

      Materials Research Society Symposium Proceedings 1123巻

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Phase Equilibria and Ternary Intermetallic Compound with L1_2 Structure in Co-W-Ga System2009

    • Author(s)
      H.Chinen、T.Omori、K.Oikawa、I.Ohnuma、R.Kainuma, K.Ishida
    • Journal Title

      Journal of Phase Equilibria and Diffusion 30巻

      Pages: 587-594

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Phase Stability of the L1_2 Compound and Microstructural Changes in Co-(W or Mo)-Ta Ternary Alloys2009

    • Author(s)
      H.Chinen, T.Omori, K.Oikawa, I.Ohnuma, R.Kainuma, K.Ishida
    • Journal Title

      Materials Research Society Symposium Proceedings 1128

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase Equilibria and Ternary Intermetallic Compound with L1_2 Structure in Co-W-Ga Syswtem2009

    • Author(s)
      H.Chinen, T.Omori, K.Oikawa, I.Ohnuma, R.Kainuma, K.Ishida
    • Journal Title

      Journal of Phase Equilibria and Diffusion 30

      Pages: 587-594

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Co-Al,Co-W及びCo-Al-W系合金の相平衡の実験的決定と熱力学解析2010

    • Author(s)
      品川一矢、高久佳和、大森俊洋、及川勝成、大沼郁雄、石田清仁、貝沼亮介
    • Organizer
      2010年日本金属学会秋期大会
    • Place of Presentation
      北海道
    • Year and Date
      2010-09-25
    • Related Report
      2010 Final Research Report
  • [Presentation] Co-Al,Co-W及びCo-Al-W系合金の相平衡の実験的決定と熱力学解析2010

    • Author(s)
      品川一矢、高久佳和、大森俊洋、及川勝成、大沼郁雄、石田清仁、貝沼亮介
    • Organizer
      日本金属学会秋期大会
    • Place of Presentation
      北海道
    • Year and Date
      2010-09-25
    • Related Report
      2010 Annual Research Report
  • [Presentation] Partition of Alloying Elements in Co-Al-W-Base Systems2010

    • Author(s)
      T.Omori、J.Sato、K.Oikawa、I.Ohnuma、R.Kainuma, K.Ishida
    • Organizer
      PRICM7
    • Place of Presentation
      ケアンズ、オーストラリア
    • Year and Date
      2010-08-05
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] Effect of Alloying Elements on Phase Equilibria in New Co-based Superalloy2010

    • Author(s)
      T.Omori、J.Sato、K.Oikawa、I.Ohnuma、R.Kainuma, K.Ishida
    • Organizer
      CIMTEC2010
    • Place of Presentation
      モンデカティーニテルメ、イタリア
    • Year and Date
      2010-06-15
    • Related Report
      2010 Final Research Report
  • [Presentation] Effect of Alloying Elements on Phase Equilibria in New Co-based Superalloy2010

    • Author(s)
      T.Omori, J.Sato, K.Oikawa, I.Ohnuma, R.Kainuma, K.Ishida
    • Organizer
      CIMTEC201
    • Place of Presentation
      モンデカティーニテルメ、イタリア
    • Year and Date
      2010-06-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] 超合金の状態図研究2009

    • Author(s)
      大森俊洋
    • Organizer
      日本鉄鋼協会高温材料のフィジカル・メタラジー研究会
    • Place of Presentation
      東京
    • Year and Date
      2009-12-22
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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