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New type of guiding principle of heterogeneous microstructural control of aerospace Ti alloys for enhancing low-temperature-high-strain-rate-superplasticity

Research Project

Project/Area Number 16H04537
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

Matsumoto Hiroaki  香川大学, 創造工学部, 教授 (40372312)

Co-Investigator(Kenkyū-buntansha) 本間 智之  長岡技術科学大学, 工学研究科, 准教授 (50452082)
Research Collaborator VELAY Vincent  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Keywords構造・機能材料 / チタン合金 / 超塑性変形 / 不均質組織制御 / 準安定組織制御 / 応力緩和機構 / 不均質組織 / 準安定組織 / 高温塑性 / 超塑性 / 組織制御 / ヘテロ組織形成
Outline of Final Research Achievements

This work aims at establishing the new type of guidance principle for microstructural control technique via heterogeneous microstructural formation of Ti alloys for enhancing superplasticity. The obtained results reveal that the Ti alloy having an optimum fraction of coarse-grains and ultrafine-grains exhibits the excellent superplastic property, which is mainly due to the optimized activation of GBS and an additional accommodation mechanism associated with occurrences of dynamic recrystallization and β precipitation. Additionally, the optimization of α/β fraction and the heterogeneity of alloying composition in the duplex microstructure also contribute to an additional accommodation mechanism (due to the enhancement of diffusion, phase decomposition). Thus, we can expect that the metastable and heterogeneous microstructural control suggested in this work will be the new type of guiding principle of microstructure for enhancing superplasticity of the aerospace-Ti alloy.

Academic Significance and Societal Importance of the Research Achievements

航空機Ti合金において粒界すべりの活動と応力緩和機構の発現を最適にバランスする準安定組織・不均質組織を軸とした新しい組織設計の指導原理を構築した。社会的意義としてもTi合金の低温・高速超塑性加工を実現する新組織・プロセス設計の指針を明示した。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (20 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] アルビ鉱山大学(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] アルビ鉱山大学(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] アルビ鉱山大学(フランス)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] High temperature tensile deformation mode and microstructural conversion of Ti-6Al-4V alloy with the (α+α′) duplex starting microstructure2019

    • Author(s)
      Hiroaki Matsumoto, Hiromasa Ito
    • Journal Title

      Materials Transactions

      Volume: 60

    • NAID

      130007695383

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superplasticity of metastable ultrafine-grained Ti-6242S alloy: mechanical flow behavior and microstructural evolution2019

    • Author(s)
      Hiroyuki Imai, Gen Yamane, Hiroaki Matsumoto, Vanessa Vidal, Vincent Velay
    • Journal Title

      Mater. Sci. Eng. A

      Volume: 754 Pages: 569-580

    • DOI

      10.1016/j.msea.2019.03.085

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superplasticity in Fine Grain Ti-6Al-4V Alloy: Mechanical Behavior and Microstructural Evolution2018

    • Author(s)
      L. Despax, V. Vidal, D. Delagnes, M. Dehmas, M. Geyer, H. Matsutmoto, V. Velay
    • Journal Title

      Defect and Diffusion Forum

      Volume: 385 Pages: 137-143

    • DOI

      10.4028/www.scientific.net/ddf.385.137

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanical Behavior of Ti-6Al-2Sn-4Zr-2Mo Titanium Alloy under Hotand Superplastic Forming Conditions: Experiment and Modeling2018

    • Author(s)
      G. Yamane,V. Velay, V. Vidal, H. Matsumoto
    • Journal Title

      Defect and Diffusion Forum

      Volume: 385 Pages: 413-418

    • DOI

      10.4028/www.scientific.net/ddf.385.413

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superplastic property of the Ti-6Al-4V alloy with ultrafine-grained heterogeneous microstructure2017

    • Author(s)
      H. Matsumoto, T. Nishihara, V. Velay, V. Vidal
    • Journal Title

      Advanced Engineering Materials

      Volume: - Issue: 1

    • DOI

      10.1002/adem.201700317

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 準安定組織・不均質(ヘテロ)微細組織制御した航空機チタン合金の高温塑性・超塑性特性2019

    • Author(s)
      松本洋明
    • Organizer
      日本金属学会春期講演大会 東京電機大学
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 不均質組織形態を制御したUFG-Ti-6Al-4V合金の超塑性変形特性2018

    • Author(s)
      伊藤大真,V. Velay, V. Vidal, 松本洋明
    • Organizer
      日本金属学会秋期講演大会 東北大学
    • Related Report
      2018 Annual Research Report
  • [Presentation] 超微細粒組織を有すTi-6Al-2Sn-4Zr-2Mo-0.1Si(Ti-6242S)合金の超塑性変形特性2018

    • Author(s)
      松本洋明,今井浩之,Vincent Velay, Vanessa Vidal
    • Organizer
      日本軽金属学会秋期講演大会 芝浦工業大学
    • Related Report
      2018 Annual Research Report
  • [Presentation] Mechanical Behavior of Ti-6Al-2Sn-4Zr-2Mo Titanium Alloy under Hotand Superplastic Forming Conditions: Experiment and Modeling2018

    • Author(s)
      G. Yamane,V.Velay,V.Vidal, H.Matsumoto
    • Organizer
      ICSAM-201813th International Conference on Superplasticity in Advanced Materials (ICSAM 2018),St. Petersburg, Russia
    • Related Report
      2018 Annual Research Report
  • [Presentation] Superplasticity in Fine Grain Ti-6Al-4V Alloy: Mechanical Behavior and Microstructural Evolution2018

    • Author(s)
      L. Despax, V. Vidal, D. Delagnes, M. Defmas, M. Geyer, H. Matsumto, V. Velay
    • Organizer
      ICSAM-201813th International Conference on Superplasticity in Advanced Materials (ICSAM 2018),St. Petersburg, Russia
    • Related Report
      2018 Annual Research Report
  • [Presentation] 準安定α′組織を有すTi-6Al-4V合金の高温引張変形特性2018

    • Author(s)
      松本洋明,伊藤大真,今井浩之,西原卓郎
    • Organizer
      日本金属学会 春期講演大会(千葉工業大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 種々の出発組織を有すTi-6242S合金の超塑性変形特性と塑性構成式の検討2017

    • Author(s)
      今井浩之,Vincent Velay,松本洋明
    • Organizer
      日本金属学会 秋期講演大会(北海道大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] (α+α’)duplex組織を出発組織としたTi-6Al-4V合金の高温変形特性2017

    • Author(s)
      伊藤大真,Vincent Velay, 松本洋明
    • Organizer
      日本金属学会 秋期講演大会(北海道大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 超微細不均質組織を呈すTi-6Al-4V合金の超塑性変形特性2017

    • Author(s)
      松本洋明,西原卓郎,Vincent Velay
    • Organizer
      日本軽金属学会 秋期講演大会(宇都宮大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] High Temperature Deformation Behavior of Ti-6Al-4V Alloy with Metastable Microstructure2017

    • Author(s)
      Hiroaki Matsumoto, Hiromasa Ito, Takuro Nishihara
    • Organizer
      International conference on Frontiers in Materials Processing, Applications, Research & Technology (FiMPART’17), Bordeaux, France.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 不均質な微細組織形態を有すTi-6Al-4V合金の超塑性変形特性2016

    • Author(s)
      西原卓郎,Vincent Velay, 松本洋明
    • Organizer
      日本金属学会 秋期講演大会(大阪大学)
    • Place of Presentation
      大阪大学
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] Ti-6Al-2Sn-4Zr-2Mo-0.1Si合金の微細粒域での高温変形特性に及ぼす粒径の影響2016

    • Author(s)
      今井浩之,Vincent Velay,松本洋明
    • Organizer
      日本金属学会 秋期講演大会(大阪大学)
    • Place of Presentation
      大阪大学
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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