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Development of robust microstructure controll technique for hypereutechtic Al-Si alloy by addtion of nano-composite grain refiner

Research Project

Project/Area Number 18K04794
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26060:Metals production and resources production-related
Research InstitutionIwate University

Principal Investigator

Mizumoto Masayuki  岩手大学, 理工学部, 教授 (90325671)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords過共晶Al-Si系合金 / 初晶Si / 結晶粒微細化 / SiC / AlN / 金属基複合材料 / 過共晶Al-Si合金 / 微細化 / ナノコンポジット / 組織制御
Outline of Final Research Achievements

Metal matrix composites (MMCs) fabricated with Al-Si alloy and SiC particles (Average diameter: 20 micron) by Linxied method and Voltex method were applied as grain refiner. Primary Si size in Al-25wt%Si alloy was decreased 30% in comparison with no-added alloy and the morphology of primary Si was changed from needle like to granular. The primary Si crystals grew from the surface of SiC particles. This result indicates that SiC will be able to act as nuclei of primary Si crystal. When MMCs fabricated by Lanxide method were applied as grain refiner, the SiC particles dispersed homogeneously in the alloy melt and the number of the SiC particles acted as nuclei of primary Si crystals was increased. This result indicates that AlN on the surface of SiC particles might also be able to act as nuclei of primary Si crystal.

Academic Significance and Societal Importance of the Research Achievements

過共晶Al-Si系合金溶湯中でも熱力学的に安定な微細セラミックス粒子を初晶Siの晶出核として添加することで,初晶Siを微細化することに成功した.また,この技術の微細化効果は,鋳造条件に影響を受けないため,従来の技術と比較して効果の安定性が高い点に優れている.また,微細セラミックス粒子を合金溶湯中に添加するためにMMCを用いるアイデアは,学術的に見て独創性が高く,世界にも類を見ない研究である.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (7 results)

All 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results)

  • [Journal Article] Internal Porosity Defects in Ductile Cast Irons2020

    • Author(s)
      Takemoto, Y., Mizumoto, M. & Kinno, K.
    • Journal Title

      International Journal of Metalcasting

      Volume: - Issue: 3 Pages: 916-929

    • DOI

      10.1007/s40962-020-00527-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] SiC粒子強化MMCの衝撃摩耗挙動の調査2020

    • Author(s)
      吉田健吾,水本将之
    • Organizer
      日本鋳造工学会第176回全国講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 過共晶Al-Si合金の初晶Si晶出挙動に及ぼすAlNの影響2020

    • Author(s)
      宮崎公輔,水本将之
    • Organizer
      日本鋳造工学会第176回全国講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 過共晶Al-Si系合金の初晶Siの形態に及ぼすSiC添加の影響2019

    • Author(s)
      水本将之,西川聡,林琢人,大峠煕
    • Organizer
      日本鋳造工学会東北支部第98回鋳造技術部会
    • Related Report
      2019 Research-status Report
  • [Presentation] SiC粒子強化Al合金複合材料/SS400の摩耗に及ぼすSiC粒子の粒子径と体積分率の影響2019

    • Author(s)
      豊島宜朗,西川聡,水本将之
    • Organizer
      日本鋳造工学会第174回全国講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 酸化被膜の変形モデルを考慮した圧力援用自発溶浸法の開発2019

    • Author(s)
      松崎貴英,西川聡,水本将之
    • Organizer
      日本鋳造工学会第174回全国講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] SiC添加による過共晶Al-Si合金の初晶Si微細化2019

    • Author(s)
      林琢人,西川聡,水本将之
    • Organizer
      日本鋳造工学会第174回全国講演大会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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