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2012 Fiscal Year Final Research Report

Intelligent forging and grain refinement

Research Project

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Project/Area Number 22360301
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionTohoku University

Principal Investigator

CHIBA Akihiko  東北大学, 金属材料研究所, 教授 (00197617)

Co-Investigator(Kenkyū-buntansha) MATSUMOTO Hiroaki  東北大学, 金属材料研究所, 助教 (40372312)
LI Yunping  東北大学, 金属材料研究所, 助教 (80546862)
KOIZUMI Yuichiro  東北大学, 金属材料研究所, 准教授 (10322174)
Project Period (FY) 2010 – 2012
KeywordsCo-Cr-Mo合金 / Processing map / インテリジェント鍛造
Research Abstract

Developed alloys, CCM alloys, have been forged on the basis of the Processing map in order to optimize condition of hot forging. Processing map has been constructed in detailed by considering observation of microstructure using EBSD, XRD and TEM. We have revealed that the microstructure observation and consideration of processing map are in good agreement; Instability map can be used to identify the occurrence of the dynamic recrystallization.

  • Research Products

    (7 results)

All 2012

All Journal Article (3 results) Presentation (3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Strain-induced martensitic transformation near twin boundaries in biomedical Co-Cr-Mo alloy with negative stacking fault energy2012

    • Author(s)
      Yuichiro Koizumi, Sho Suzuki, Kenta Yamanaka, Byoung-Soo Lee, Kazuhisa Sato, Yunping Li, Shingo Kurosu, Hiroaki Matsumoto, Akihiko Chiba
    • Journal Title

      Acta Materialia

      Volume: Volume 60, Issues 6-7 Pages: 2901 - 2915

    • URL

      http://dx.doi.org/10.1016/j.actamat.2012.11.041)

  • [Journal Article] Microstructures and Mechanical Properties of Biomedical Co-29Cr-6Mo-0.14N Alloys Processed by Hot Rolling2012

    • Author(s)
      Manami Mori, Kenta Yamanaka, Shigeo Sato, Kazuaki Wagatsuma, Akihiko Chiba
    • Journal Title

      Metallurgical andMaterials Transactions A

      Volume: 43A Pages: 3108-3119

    • URL

      http://dx.doi.org/10.1007/s11661-012-1156-y

  • [Journal Article] Origin of Significant Grain Refinement of Biomedical Co-29Cr-6Mo Alloy without Severe Plastic Deformation2012

    • Author(s)
      Kenta Yamanaka, Manami Mori, Akihiko Chiba
    • Journal Title

      Metallurgical and Materials Transactions A

      Volume: 43A Pages: 4875-4887

    • URL

      http://dx.doi.org/10.1007/s11661-012-1303-5

  • [Presentation] 生体用Co-Cr合金の組織制御と力学特性改善2012

    • Author(s)
      千葉晶彦、山中謙太、黒須信吾、小泉雄一郎、李云平、松本洋明
    • Organizer
      日本金属学会2012年秋期講演(第151回)
    • Place of Presentation
      松山
    • Year and Date
      2012-09-18
  • [Presentation] Tribology of Artificial Hip Joints Made of Co-Cr-Mo Alloys2012

    • Author(s)
      陳妍、黒須信吾、李云平、松本洋明、小泉 雄一郎、千葉晶彦
    • Organizer
      日本金属学会2012年秋期講演(第151回)
    • Place of Presentation
      松山
    • Year and Date
      2012-09-17
  • [Presentation] 生体用Co-Cr-Mo-N合金の引張-圧縮変形におけるひずみ誘起マルテンサイト変態2012

    • Author(s)
      光延卓哉、李秉洙、小泉雄一郎、千葉晶彦
    • Organizer
      日本金属学会2012年秋期講演(第151回)
    • Place of Presentation
      松山
    • Year and Date
      2012-09-17
  • [Patent(Industrial Property Rights)] Co-Cr-W基合金熱間加工材、焼鈍材、鍛造材、均質化熱処理材、及びCo-Cr-W基合金熱間加工材の製造方法、焼鈍材の製造方法2012

    • Inventor(s)
      山中謙太、千葉晶彦
    • Industrial Property Rights Holder
      国立大学法人東北大学、株式会社エイワ
    • Industrial Property Number
      特許、特願2012-203683
    • Filing Date
      2012-09-14

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Published: 2014-08-29  

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