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Development of novel light metal superalloys under the concept of mechanical conflict microstructural control

Research Project

Project/Area Number 21K18826
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionNagoya Institute of Technology

Principal Investigator

Hagihara Koji  名古屋工業大学, 工学(系)研究科(研究院), 教授 (10346182)

Co-Investigator(Kenkyū-buntansha) 眞山 剛  熊本大学, 先進マグネシウム国際研究センター, 准教授 (40333629)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords軽金属 / 超高強度 / 延性 / 局所変形 / 不均質組織 / 耐熱材料 / 組織制御 / 方位制御
Outline of Research at the Start

本研究は新規耐熱「超合金」開発を,これまでに達成されていないAlやMgといった軽金属合金に主に着目し実現するという挑戦的試みである.軟質相への応力集中,局所変形を意図的に誘導することで複相材料の力学高機能化を図る「力学コンフリクト組織制御」という合金設計法を新たに提案し,各種合金の力学評価という実験的アプローチと,結晶塑性有限要素解析による計算アプローチの融合により,本挑戦的提案の妥当性について検討する.

Outline of Final Research Achievements

We attempted to improve the mechanical properties of multiphase materials by combining thermomechanical processing with anisotropic macrostructures with aligned microstructures. As a result, we found that the above-mentioned structure control is possible in alloy systems such as Al-Si, Al-Mg2Si, Al-Y and Al-Ce. Focusing on Al-Si and Al-Mg2Si alloys, high strength was achieved by compression tests parallel to the growth direction after DS treatment. When the DS material was rolled, the yield stress decreased due to the refinement of the aligned second phases as the rolling reduction increased. On the other hand, the formation of characteristic wedge-shaped deformation bands was observed in the rolled DS Al-Si alloys. This suggests the possibility that the formation of such tiny localized deformation bands contributes to the improvement of ductility.

Academic Significance and Societal Importance of the Research Achievements

我々は本提案とは異なる別研究において,複相材料における両相の層状(ラメラ)組織制御が多種多様な合金系においてキンク帯の形成誘導を実現し,材料強化,延性の確保を可能にする可能性を見出した.さらに本研究において,層状組織を有さない複相合金においても,圧延などの加工熱処理との融合により,組織とは異なる形で異方性を与えることにより,キンク帯に類するような新たな局所変形モードを誘起できる可能性が実験,計算の両観点から見出された.この様な新たなアプローチの確立は,CO2削減,エネルギー問題を解決する日本発の新材料創製の足掛かりとなると期待され,その学術的,社会的意義は極めて大きい.

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (29 results)

All 2023 2022 2021 Other

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (23 results) (of which Int'l Joint Research: 6 results,  Invited: 11 results) Remarks (2 results)

  • [Journal Article] Unified Understanding of Strengthening Mechanisms Acting in Mg/LPSO Two-Phase Extruded Alloys with Varying LPSO Phase Volume Fraction2023

    • Author(s)
      Hagihara Koji、Tokunaga Toko、Yamamoto Kazuki、Yamasaki Michiaki、Mayama Tsuyoshi、Shioyama Takumi、Kawamura Yoshihito、Nakano Takayoshi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 64 Issue: 4 Pages: 720-729

    • DOI

      10.2320/matertrans.MT-MD2022002

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2023-04-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kink-band formation in the directionally-solidified Mg/LPSO two-phase alloys2022

    • Author(s)
      Tokunaga Toko、Hagihara Koji、Yamasaki Michiaki、Mayama Tsuyoshi、Yamamoto Kazuki、Narimoto Hiroki、Kida Taiki、Kawamura Yoshihito、Nakano Takayoshi
    • Journal Title

      Science and Technology of Advanced Materials

      Volume: 23 Issue: 1 Pages: 752-766

    • DOI

      10.1080/14686996.2022.2137696

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] α-Mg/LPSO (Long-Period Stacking Ordered) phase interfaces as obstacles against dislocation slip in as-cast Mg-Zn-Y alloys2022

    • Author(s)
      Mayama Tsuyoshi、Agnew Sean R.、Hagihara Koji、Kamura Kentaro、Shiraishi Kazuma、Yamasaki Michiaki、Kawamura Yoshihito
    • Journal Title

      International Journal of Plasticity

      Volume: 154 Pages: 103294-103294

    • DOI

      10.1016/j.ijplas.2022.103294

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultrahigh specific strength in a magnesium alloy strengthened by spinodal decomposition2021

    • Author(s)
      Xin Tongzheng、Zhao Yuhong、Mahjoub Reza、Jiang Jiaxi、Yadav Apurv、Nomoto Keita、Niu Ranming、Tang Song、Ji Fan、Quadir Zakaria、Miskovic David、Daniels John、Xu Wanqiang、Liao Xiaozhou、Chen Long-Qing、Hagihara Koji、Li Xiaoyan、Ringer Simon、Ferry Michael
    • Journal Title

      Science Advances

      Volume: 7 Issue: 23

    • DOI

      10.1126/sciadv.abf3039

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Controlling factor of the strengthening of mille-feuille structured alloys accompanied by kink-band formation2023

    • Author(s)
      Toko Tokunaga, Koji Hagihara, Shuhei Ohsawa, Shohei Uemichi, Daisuke Egusa, Eiji Abe
    • Organizer
      International Conference on Plasticity, Damage, and Fracture 2023 (@Barcelo Bavaro Punta Cana, Dominican Republic)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ミルフィーユ材料におけるキンク形成,強化機構2023

    • Author(s)
      萩原幸司
    • Organizer
      日本金属学会シンポジウム ~ミルフィーユ構造の創製とキンク強化~ (@東京工業大学)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Mg/LPSO複相合金におけるマルチモーダル組織の変化と力学特性の相関2023

    • Author(s)
      山本 和輝、杉田 三佳、萩原 幸司、徳永 透子、眞山 剛、山崎 倫昭
    • Organizer
      日本金属学会2023年度春期講演大会 (@東京大学 駒場キャンパス)
    • Related Report
      2022 Annual Research Report
  • [Presentation] LPSO相,これに派生したミルフィーユ材料が示す特異な塑性変形挙動2022

    • Author(s)
      萩原幸司
    • Organizer
      日本材料学会 第2回マルチスケールマテリアルモデリングシンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] その場中性子回折実験によるMg-Zn-Y合金の引張変形機構の考察2022

    • Author(s)
      徳永透子,山崎倫昭,眞山剛,ハルヨステファヌス,ゴンウー,飯塚拓海,萩原幸司
    • Organizer
      軽金属学会 2022年春期講演大会(第142回大会) (@Web On-line)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Mg/LPSO複相合金の強化挙動の統一的理解2022

    • Author(s)
      山本 和輝,萩原 幸司,徳永 透子,山崎 倫昭,眞山 剛,河村 能人,中野 貴由
    • Organizer
      第171回日本金属学会2022年秋期大会 (@福岡工業大学)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 組織型ミルフィーユ構造材料におけるキンク形成と強化2022

    • Author(s)
      萩原幸司
    • Organizer
      第171回日本金属学会2022年秋期大会 (@福岡工業大学)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Mg/LPSO二相合金における微細組織と引張変形挙動の相関2022

    • Author(s)
      徳永 透子,山崎 倫昭, 眞山 剛,ハルヨ ステファヌス,ゴン ウー, 飯塚 拓海,萩原 幸司
    • Organizer
      日本機械学会 M&M 2022 材料力学カンファレンス (@弘前大学 文京町キャンパス)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Mg/LPSO複相合金の強化挙動と組織の相関2022

    • Author(s)
      山本 和輝,徳永 透子,萩原 幸司
    • Organizer
      日本金属学会・日本鉄鋼協会東海支部 学生研究発表会 (材料フォーラムTOKAI @Web online)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Mg/LPSO複相合金の組織と力学特性の相関2022

    • Author(s)
      萩原幸司,徳永透子,山崎倫昭,眞山 剛,山本和輝,杉田三佳
    • Organizer
      軽金属学会 2022年秋期講演大会(第143回大会) (@東京工業大学)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 種々の組織制御による高強度マグネシウム合金開発の現状2022

    • Author(s)
      萩原幸司
    • Organizer
      軽金属学会・国際連携を見据えたマグネシウム・チタン若手研究会 (@Web on-line)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Kink-band formation in various mille-feuille structured Mg- and Al-based materials2022

    • Author(s)
      Koji Hagihara, Toko Tokunaga, Shuhei Ohsawa
    • Organizer
      Materials Research Society (MRS) 2022 fall meeting (@Boston and Web on-line)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kink-band formation in mille-feuille structured metallic materials prepared by directional solidification2022

    • Author(s)
      Koji Hagihara, Toko Tokunaga
    • Organizer
      5th International Symposium on Long Stacking/Order and Millefeuille Structures "LPSO/MFS 2022" (@Tokyo, Japan)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kink-band formation in Mg/LPSO two-phase alloys2022

    • Author(s)
      Toko Tokunaga, Koji Hagihara, Michiaki Yamasaki, Tsuyoshi Mayama, Yoshihito Kawamura, Takayoshi Nakano
    • Organizer
      5th International Symposium on Long Stacking/Order and Millefeuille Structures "LPSO/MFS 2022" (@Tokyo, Japan)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 材料と構造の異方性が重畳した弾塑性挙動の連続体解析2022

    • Author(s)
      眞山 剛
    • Organizer
      第2回マルチスケールマテリアルモデリングシンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 結晶塑性有限要素法による軽金属の不均一変形解析2022

    • Author(s)
      眞山 剛
    • Organizer
      塑性加工学会東関東支部 第66回技術懇談会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 積層構造体の弾塑性変形に関する数値的研究2022

    • Author(s)
      眞山 剛
    • Organizer
      日本材料学会 北海道支部第2回学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 応力誘起マルテンサイト変態を含む変形モード変化がβ-Ti合金の力学特性に及ぼす影響2021

    • Author(s)
      萩原幸司,中野貴由
    • Organizer
      日本鉄鋼協会 秋季講演大会併催シンポジウム  「チタン合金の相変態に関する研究動向」
    • Related Report
      2021 Research-status Report
  • [Presentation] 材料強靭化原理の新展開 -新規高機能性構造材料開発への挑戦-2021

    • Author(s)
      萩原幸司
    • Organizer
      2021年度 本多光太郎・湯川記念合同講演会  [日本金属学会・日本鉄鋼協会東海支部 主催]
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Factors governing the mechanical properties in the directionally solidified Mg/LPSO two-phase alloys2021

    • Author(s)
      K. Hagihara, T. Tokunaga, M. Yamasaki, T. Mayama, T. Kida, Y. Kawamura, T. Nakano
    • Organizer
      Materials Research Meeting 2021 (MRM2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Estimation of critical resolved shear stress for basal slip system of α-Mg and LPSO phases in as-cast Mg94Zn2Y4 alloy2021

    • Author(s)
      T. Mayama, S. R. Agnew, S. Takayama, S. Morooka, W. Gong, S. Harjo, K. Hagihara, T. Tokunaga, M. Yamasaki, Y. Kawamura
    • Organizer
      Materials Research Meeting 2021 (MRM2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 層状構造体のキンク形成に及ぼす塑性異方性の影響2021

    • Author(s)
      眞山 剛, 住友祐元, 萩原幸司
    • Organizer
      軽金属学会第140回春期大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 圧縮負荷を受けるAl/Al2Cu共晶合金におけるキンク形成機構に関する結晶塑性解析2021

    • Author(s)
      眞山 剛, 住友祐元, 萩原幸司
    • Organizer
      軽金属学会第140回春期大会
    • Related Report
      2021 Research-status Report
  • [Remarks] 名古屋工業大学 材料組織・塑性制御工学研究室 (萩原研究室) HP

    • Related Report
      2022 Annual Research Report
  • [Remarks] 名古屋工業大学 材料組織・塑性制御工学研究室 (萩原研究室) HP

    • URL

      http://hagihara.web.nitech.ac.jp/

    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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