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Metallurgy of precipitation aiming at ductility enhancement: Fabrication and characterization of core-shell structured particle dispersion steels

Research Project

Project/Area Number 17H01333
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/Microstructural control engineering
Research InstitutionKyushu University

Principal Investigator

Tsuchiyama Toshihiro  九州大学, 工学研究院, 教授 (40315106)

Co-Investigator(Kenkyū-buntansha) 諸岡 聡  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究副主幹 (10534422)
大橋 鉄也  北見工業大学, 工学部, 特任教授 (80312445)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥37,180,000 (Direct Cost: ¥28,600,000、Indirect Cost: ¥8,580,000)
Fiscal Year 2019: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2017: ¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000)
Keywords鉄鋼材料 / 機械的性質 / 組織制御 / 析出物 / 相変態 / 加工硬化 / 延性破壊 / 粒子分散強化 / 電子顕微鏡 / 中性子回折 / 結晶塑性FEM / コアーシェル構造 / 析出強化 / 延性 / ボイド / 残留オーステナイト / 軟質粒子 / 炭化物 / 中マンガン鋼 / マルテンサイト / 材料加工・処理
Outline of Final Research Achievements

As a new guideline for the creation of high-strength steel with excellent workability, we proposed a microstructure control method for dispersing precipitated particles having a core-shell structure. In other words, the idea is to arrange a hard phase in the center of the particle to add a high strength and retard a fracture by the surrounding soft phase. Three types of core-shell structured particle dispersion reinforced steels were actually produced and their mechanical properties were evaluated. Among them, it was confirmed that an excellent strength-ductility balance can be obtained for Mn-containing steel in which martensite is arranged inside and austenite is arranged around it.

Academic Significance and Societal Importance of the Research Achievements

自動車の軽量化による燃費低減と、衝突時の安全性を確保するには、使用される鉄鋼材料の高強度化が不可欠となる。しかしながら、高強度化のみでは複雑な形状の部材を作製することはできず、鉄鋼材料には高強度のみならず優れた加工性という相反する特性が付与されなければならない。本研究では、コア-シェル構造粒子という特殊な金属組織を組み込むことでトレード-オフの関係にある両特性を同時に向上させようとする独自の試みを行ったものである。

Report

(3 results)
  • 2020 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report

Research Products

(23 results)

All 2019 2018 2017

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (15 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Modelling and Crystal Plasticity Analysis for the Mechanical Response of Alloys with Non-uniformly Distributed Secondary Particles2019

    • Author(s)
      奥山彫夢,田中將己,大橋鉄也,森川龍哉
    • Journal Title

      Tetsu-to-Hagane

      Volume: 105 Issue: 2 Pages: 163-172

    • DOI

      10.2355/tetsutohagane.TETSU-2018-098

    • NAID

      130007585436

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystal Plasticity Analysis on Ductility of Ferrite/Cementite Multilayers: Effect of Dislocation Absorption Ability of the Hetero Interface2019

    • Author(s)
      安田洋平,下川智嗣,大橋鉄也,新山友暁
    • Journal Title

      Tetsu-to-Hagane

      Volume: 105 Issue: 2 Pages: 146-154

    • DOI

      10.2355/tetsutohagane.TETSU-2018-082

    • NAID

      130007585407

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Difference in Local Deformation and Ductile Fracture Behaviors between Hard VC and Soft Cu Particle Dispersion Ferritic Steels2019

    • Author(s)
      土山聡宏、 古賀茉冬、 下地いずみ、 平林秀、 増村拓朗
    • Journal Title

      Tetsu-to-Hagane

      Volume: 105 Issue: 2 Pages: 182-189

    • DOI

      10.2355/tetsutohagane.TETSU-2018-088

    • NAID

      130007585443

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Generation and accumulation of atomic vacancies due to dislocation movement and pair annihilation2018

    • Author(s)
      Ohashi Tetsuya
    • Journal Title

      Philosophical Magazine

      Volume: 98 Issue: 25 Pages: 2275-2295

    • DOI

      10.1080/14786435.2018.1478142

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 粒子分散強化型合金の微視組織に生ずる2次すべりと巨視的加工硬化特性に関するモデリングと結晶塑性解析2018

    • Author(s)
      奥山彫夢,大橋鉄也,田中將己
    • Journal Title

      鉄と鋼

      Volume: 104 Pages: 166-176

    • NAID

      130006405083

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Energy-resolved small-angle neutron scattering from steel2017

    • Author(s)
      Y. Oba, S. Morooka, K. Ohishi, J. Suzuki, S. Takata, N. Sato, R. Inoue, T. Tsuchiyama, E. Gilbert, and M. Sugiyama
    • Journal Title

      Journal of Applied Crystallography

      Volume: 50 Issue: 2 Pages: 334-339

    • DOI

      10.1107/s1600576717000279

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Characterization of microstructure using Bragg edge and energy-resolved small-angle neutron scattering2017

    • Author(s)
      Y.Oba, S.Morooka, K.Ohishi, J.Suzuki, T.Tsuchiyama, E.P.Gilbert
    • Journal Title

      proc. of ISSS 2017

      Volume: 1 Pages: 151-154

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] 部分焼入-二相域焼鈍による中Mn鋼の高強度化2019

    • Author(s)
      田中祥平 坂本孝之 土山聡宏 高木節雄
    • Organizer
      日本鉄鋼協会第177回春季講演大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Microstructure control of medium Mn multi-phase steel by interrupted quenching and intercritical annealing2018

    • Author(s)
      田中祥平 坂本孝之 土山聡宏 高木節雄
    • Organizer
      平成30年度合同学術講演大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 硬質粒子と軟質粒子の複合析出鋼における機械的性質2018

    • Author(s)
      水口豪也 増村拓朗 土山聡宏 高木節雄
    • Organizer
      平成30年度合同学術講演大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ナノスケールDICによる粒子分散鋼の不均一変形挙動の評価2018

    • Author(s)
      古賀茉冬 増村拓朗 土山聡宏 高木節雄
    • Organizer
      平成30年度合同学術講演大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] デジタル画像相関法による粒子分散鋼の不均一変形挙動の評価2018

    • Author(s)
      古賀茉冬 増村拓朗 土山聡宏 高木節雄
    • Organizer
      日本鉄鋼協会第176回秋季講演大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Mechanical property of a core-shell structured medium manganese steel fabricated by interrupted quenching and intercritical annealing2018

    • Author(s)
      Toshihiro Tsuchiyama, Takayuki Sakamoto, Takuro Masumura, Setsuo Takaki
    • Organizer
      THERMEC'2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effect of annealling time on mechanical property of Medium-Mn steel treated with interrupted-quenched and intecritical annealing2018

    • Author(s)
      Shohei Tanaka, Takayuki Sakamoto, Toshihiro Tsuchiyama, Setsuo Takaki
    • Organizer
      ICAS2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanical property of Medium-Mn steel treated with interrupted quenching and intercritical annealing for short time2018

    • Author(s)
      Shohei Tanaka, Takayuki Sakamoto, Toshihiro Tsuchiyama, Setsuo Takaki
    • Organizer
      CAMS2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 塑性すべりに伴う原子空孔密度発展の結晶塑性解析2018

    • Author(s)
      大橋鉄也
    • Organizer
      鉄鋼協会 2018年度「水素脆化の基本要因と実用課題」フォーラム第1回会合
    • Related Report
      2018 Annual Research Report
  • [Presentation] Dislocation density-based crystal plasticity analysis for the evolution of atomic vacancies during plastic slip deformation2018

    • Author(s)
      Tetsuya Ohashi
    • Organizer
      The 9th international conference on Multiscale Materials Modeling
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 分散強化合金中の2次すべり系の活動と巨視的な力学特性の結晶塑性解析2018

    • Author(s)
      奥山彫夢,田中將己,大橋鉄也
    • Organizer
      日本機械学会九州支部第71期講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 中Mn鋼の部分焼入-二相域焼鈍における熱処理条件の検討2017

    • Author(s)
      坂本孝之 土山聡宏 高木節雄
    • Organizer
      第84回熱処理技術協会秋季講演大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Characterization of microstructure using Bragg edge and energy-resolved small-angle neutron scattering2017

    • Author(s)
      Y.Oba, S.Morooka, K.Ohishi, J.Suzuki, T.Tsuchiyama, E.P.Gilbert
    • Organizer
      International Symposium on Steel Science (ISSS 2017)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 軟質な第二相粒子が分散する合金の転位蓄積と加工硬化の結晶塑性解析2017

    • Author(s)
      奥山彫夢,大橋鉄也,田中將己,森川龍哉
    • Organizer
      平成29年度日本鉄鋼協会九州支部学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 分散強化合金中の硬質粒子近傍に生ずる変形と巨視的な力学特性の結晶塑性解析2017

    • Author(s)
      奥山彫夢,大橋鉄也,田中將己
    • Organizer
      日本機械学会 M&M2017材料力学カンファレンス
    • Related Report
      2017 Annual Research Report
  • [Book] Dislocation Density-Based Modeling of Crystal Plasticity Finite Element Analysis, in Handbook of Mechanics of Materials2018

    • Author(s)
      Tetsuya Ohashi
    • Total Pages
      26
    • Publisher
      Springer Nature Singapore Pte Ltd.
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2022-01-27  

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