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Modification of macrosegregation due to size and morphology control in solidified structure

Research Project

Project/Area Number 25420796
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Metal making/Resorce production engineering
Research Institution防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)

Principal Investigator

ESAKA Hisao  防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, その他部局等, 教授 (40531992)

Co-Investigator(Renkei-kenkyūsha) SHINOZUKA Kei  防衛大学校, 電気情報学群 機能材料工学科, 助教 (30546065)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsマクロ偏析 / 等軸晶 / 組織微細化 / 組織複雑化 / フラクタル次元 / 樹間流動 / 負圧 / ブリッジング / 粒径 / 形態複雑化 / 凝固組織制御 / 組織形態
Outline of Final Research Achievements

The feasibility study for suppressing a macroscopic segregation in an ingot has been performed, controlling the solidified structure. Al-10wt.%Cu alloy has been used as a model alloy. The size of equiaxed grain was controlled by the amount of modifier which promote nucleation of primary aluminum due to heterogeneous nucleation. The complexity of morphology of equiaxed grain was changed by applying the oscillation of mold just after casting. Because of these two actions, the size and complexity of equiaxed grain were controlled independently to some extent. Then, casting experiments have been carried out where the molten alloy was poured into a mold cavity and macroscopic segregation has been characterized precisely, changing the size and complexity of equiaxed grains. It was found that macrosegregation has been suppressed when the equiaxed grains are fine and complex.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (7 results)

All 2016 2015 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (6 results)

  • [Journal Article] Mechanism for complex morphology due to mechanical vibration2016

    • Author(s)
      E .Aritaka, H. Esaka and K. Shinozuka
    • Journal Title

      ISIJ International

      Volume: 56

    • NAID

      130005261157

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 等軸晶形態制御に及ぼす固液共存体の振動の影響2016

    • Author(s)
      江阪久雄, 高嶋大, 有高暎一, 篠塚計
    • Organizer
      日本鉄鋼協会 第172回秋季講演大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2016-09-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] 等軸晶の径と形態の制御によるマクロ偏析低減の可能性2015

    • Author(s)
      有高暎一, 江阪久雄, 篠塚計
    • Organizer
      日本鉄鋼協会 第170回秋季講演大会シンポジウム
    • Place of Presentation
      九州大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 横型遠心鋳造プロセスでの組織形成に対する自由表面の影響2015

    • Author(s)
      江阪久雄, 片岡佳将、 篠塚計
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      東京大学
    • Year and Date
      2015-03-18 – 2015-03-20
    • Related Report
      2014 Research-status Report
  • [Presentation] 凝固組織形態に及ぼす機械的振動の影響2014

    • Author(s)
      有高瑛一, 江阪久雄, 篠塚計
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Research-status Report
  • [Presentation] 透明有機物を用いた凝固末期流動の可視化実験の試み2014

    • Author(s)
      有高瑛一、江阪久雄、篠塚計
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      東京工業大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Al合金を用いた等軸晶の粒径と形態の独立制御の試み2013

    • Author(s)
      有高瑛一、江阪久雄、篠塚計
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      金沢大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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