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Beneficial use of interstitial elements amd work hardening mechanism in high strength titanium alloys

Research Project

Project/Area Number 23560840
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Structural/Functional materials
Research InstitutionKyushu University

Principal Investigator

TSUCHIYAMA Toshihiro  九州大学, 工学(系)研究科(研究院), 准教授 (40315106)

Co-Investigator(Renkei-kenkyūsha) MOROOKA Satoshi  首都大学東京, システムデザイン学部システムデザイン学科, 助教 (10534422)
Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsチタン合金 / 侵入型元素 / 酸素 / 窒素 / 機械的性質 / 強度-延性バランス / 強度 / 延性 / 加工硬化 / 中性子回折 / 不均一変形
Research Abstract

High oxygen or nitrogen titanium alloys were produced on the basis of a low alloy titanium alloy consisting of conventional alloying elements, and then the microstructure and mechanical property were investigated. As a result, the microstructure was hardly influenced by oxygen and nitrogen, while the strength of the alloys were greatly increased without deteriorating ductility too much. The reason of the improvement of mechanical property due to oxygen and nitrogen addition was discussed in terms of the strength ratio of alpha phase to beta phase,and then it was clarified by theoretical considerations of the strain uniformity effect as well as the positive work hardenability effect of beta phase.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (13 results)

All 2014 2013 2011 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (11 results)

  • [Journal Article] Enhanced work hardening by redistribution of oxygen In (α+β) type Ti-4Cr-0.2O alloy2014

    • Author(s)
      Duck-soo Kang, Norimitsu Koga, Nobuo Nakada, Toshihiro Tsuchiyama and S. Takaki
    • Journal Title

      Materials Science and Engineering A

      Volume: vol. 606 Pages: 101-107

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced work hardening by redistribution of oxygen in (α+β) type Ti-4Cr-0.2O alloys2014

    • Author(s)
      Duck-soo Kang, Norimitsu Koga, Masayuki Sakata, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki
    • Journal Title

      Materials Science and Engineering A

      Volume: 00 Pages: 101-107

    • DOI

      10.1016/j.msea.2014.03.076

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] 「(α+β)型Ti-Cr合金における酸素添加による機械的性質の変化」2014

    • Author(s)
      岡本惇志、古賀紀光、姜徳守、土山聡宏、高木節雄
    • Organizer
      日本鉄鋼協会第166回秋季講演大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2014-09-18
    • Related Report
      2013 Final Research Report
  • [Presentation] 「酸素を添加した2相チタン合金における加工硬化機構」2014

    • Author(s)
      土山聡宏、岡本惇志、姜徳守、高木節雄
    • Organizer
      日本鉄鋼協会第167回春季講演大会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2014-03-23
    • Related Report
      2013 Final Research Report
  • [Presentation] (α+β)型Ti-Cr合金における酸素添加による機械的性質の改善2014

    • Author(s)
      岡本惇志・古賀紀光・姜徳守・土山聡宏・高木節雄
    • Organizer
      日本鉄鋼協会 第166回秋季講演大会
    • Place of Presentation
      金沢大学 角間キャンパス
    • Related Report
      2013 Annual Research Report
  • [Presentation] 酸素を添加したTi-4Cr二相チタン合金における加工硬化機構2014

    • Author(s)
      土山聡宏・岡本惇志・姜徳守・高木節雄
    • Organizer
      日本鉄鋼協会 第167回春季講演大会
    • Place of Presentation
      東京工業大学 大岡山キャンパス
    • Related Report
      2013 Annual Research Report
  • [Presentation] Effect of oxygen on inhomogeneous deformation behavior in (α+β) type titanium alloys2013

    • Author(s)
      Duck-soo Kang, Norimitsu Koga, Toshihiro Tsuchiyama and S. Takaki
    • Organizer
      KU-KIMS-POSTECH-SNU International Symposium
    • Place of Presentation
      POSTECH,浦項
    • Year and Date
      2013-06-21
    • Related Report
      2013 Final Research Report
  • [Presentation] 「(α+β)型Ti-4Cr合金の酸素添加による高延性化」2013

    • Author(s)
      岡本惇志、古賀紀光、姜徳守、土山聡宏、高木節雄
    • Organizer
      日本金属学会九州支部・日本鉄鋼協会九州支部合同学術講演大会
    • Place of Presentation
      熊本県民交流館パレア
    • Year and Date
      2013-06-09
    • Related Report
      2013 Final Research Report
  • [Presentation] (α+β)型Ti-4Cr合金の酸素添加による高延性化2013

    • Author(s)
      岡本惇志,古賀紀光,姜徳守,土山聡宏,高木節雄
    • Organizer
      日本金属学会九州支部・日本鉄鋼協会九州支部
    • Place of Presentation
      熊本県民交流館パレア
    • Related Report
      2013 Annual Research Report
  • [Presentation] Duck-soo Kang, Norimitsu Koga, Toshihiro Tsuchiyama, Setsuo Takaki2013

    • Author(s)
      Effect of oxygen on inhomogeneous deformation behavior in (α+β) type titanium alloy
    • Organizer
      KU-KIMS-POSTECH-SNU Int. Symposium
    • Place of Presentation
      POSTECH, Korea
    • Related Report
      2013 Annual Research Report
  • [Presentation] In-situ Neutron Diffraction Study on Tensile Deformation Behavior of Interstitials Strengthened Titanium Alloys2011

    • Author(s)
      S. MOROOKA, O. UMEZAWA, M. SAKATA, T. TSUCHIYAMA and S. HARJO
    • Organizer
      1st Asia-Ocean Conference on Neutron Scattering
    • Place of Presentation
      Ttsukuba International Congress Center
    • Related Report
      2011 Research-status Report
  • [Presentation] Effect of oxygen on inhomogeneous deformation behavior in (α+β) type titanium alloy

    • Author(s)
      Ducksoo Kang, Norimistsu Koga, Toshihiro Tsuchiyama, Setsuo Takaki
    • Organizer
      日本鉄鋼協会第165回春季講演大会
    • Place of Presentation
      東京電機大学
    • Related Report
      2012 Research-status Report
  • [Presentation] チタン合金の塑性変形挙動に及ぼす粒応力分配と集合組織の影響

    • Author(s)
      諸岡 聡、梅澤 修
    • Organizer
      日本金属学会分科会 「第2回結晶と組織の配向制御による材料高性能化」研究会
    • Place of Presentation
      倉敷
    • Related Report
      2012 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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