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Rapid and Stable Fabrication Technique of Iron-base Microporous Material Starting from Supersaturated Martensitic Structure

Research Project

Project/Area Number 17K14847
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Metal making/Resorce production engineering
Research InstitutionAkita University

Principal Investigator

GOTO Ikuzo  秋田大学, 理工学研究科, 助教 (10632812)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords鋳鉄 / 熱処理 / 黒鉛 / 酸化 / 寸法 / 密度 / マルテンサイト / アルミニウム / 脱炭 / 鋳造 / 相変態 / 各種製造プロセス
Outline of Final Research Achievements

Factors influencing the growth behavior of cast iron were investigated to achieve the rapid and stable fabrication of iron-base microporous material. The results showed that the growth was promoted by the aluminum addition, and that there were significant effect of the oxidation under the conditions of the small specimen and/or large amount of aluminum content. Meanwhile, the effects of the specimen size and/or atmosphere were reduced by using the specimens including martensitic phase. This result suggests that the microstructural homogenization associated with the martensitic transformation is effective for the stabilization of the growth behavior.

Academic Significance and Societal Importance of the Research Achievements

種々の金属・合金においてポーラス(多孔質)化に関する研究が進みつつあるが,鉄基合金に関しては,マイクロポーラス材料は実現されていない.一方,鋳鉄が加熱・冷却サイクルにより膨張する現象は成長と呼ばれ,寸法変化や強度低下が問題となる.また,成長の際には空隙が形成されるが,これを利用して鋳鉄に潤滑油を含浸させた軸受も広く使用されている.このような含油軸受の製造プロセスでは,成長を効率的に生じさせる技術が重要となる.

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report

Research Products

(2 results)

All 2018

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Effect of Aluminum Addition on Growth Behavior of Flake Graphite Cast Iron2018

    • Author(s)
      R. Hosoya, H. Yamada, G. Egawa, I. Goto, S. Aso, K. Kurosawa
    • Organizer
      The 7th Japan-Korea Conference for Young Foundry Engineers
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 片状黒鉛鋳鉄の成長挙動に及ぼすアルミニウム添加の影響2018

    • Author(s)
      山田浩正,江川元太,後藤育壮,麻生節夫,飛島明
    • Organizer
      日本鋳造工学会第171回全国講演大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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