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Improvement of mechanical properties of Ti-based superelastic alloys through impurity alloying elements and controlling nano-scale modulated structure

Research Project

Project/Area Number 25289247
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Structural/Functional materials
Research InstitutionUniversity of Tsukuba

Principal Investigator

KIM Hee Young  筑波大学, 数理物質系, 教授 (20333841)

Co-Investigator(Renkei-kenkyūsha) MIYAZAKI Shuichi  筑波大学, 数理物質系, 特命教授 (50133038)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Keywordsチタン合金 / マルテンサイト変態 / 超弾性 / ナノドメイン
Outline of Final Research Achievements

Mechanical properties of Ti alloys are strongly influenced by the interstitial alloying elements such as oxygen and nitrogen, which are unavoidable impurities in Ti alloys. In this study, the effects of interstitial alloying elements such as oxygen and nitrogen, on microstructure, mechanical properties and transformation and deformation behavior of meta-stable Ti alloys were investigated. The mechanism and origin of anomalous properties such as isothermal martensitic transformation under a constant stress, invar-like behavior and large nonlinear elastic strain with near zero hysteresis observed in Ti alloys containing a larger amount of interstitial alloying elements could be verified successfully.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (18 results)

All 2016 2015 2014 2013

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Acknowledgement Compliant: 6 results) Presentation (9 results) (of which Invited: 2 results)

  • [Journal Article] Effects of oxygen concentration and phase stability on nano-domain structure and thermal expansion behavior of Ti-Nb-Zr-Ta-O alloys2015

    • Author(s)
      L.S. Wei, H.Y. Kim, S. Miyazaki
    • Journal Title

      Acta Materialia

      Volume: 100 Pages: 313-322

    • DOI

      10.1016/j.actamat.2015.08.054

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Crystal structure, transformation strain, and superelastic property of Ti-Nb-Zr and Ti-Nb-Ta alloys2015

    • Author(s)
      H.Y. Kim, J. Fu, H. Tobe, J.I. Kim, S. Miyazaki
    • Journal Title

      Shape Memory and Superelasticity

      Volume: 1 Issue: 2 Pages: 107-116

    • DOI

      10.1007/s40830-015-0022-3

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Martensitic Transformation and Superelastic Properties of Ti-Nb Base Alloys2015

    • Author(s)
      H.Y. Kim, S. Miyazaki
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 56 Issue: 5 Pages: 625-634

    • DOI

      10.2320/matertrans.M2014454

    • NAID

      130005065978

    • ISSN
      1345-9678, 1347-5320
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of B addition on the microstructure and superelastic properties of a Ti-26Nb alloy2015

    • Author(s)
      Y. Al-Zain, H.Y. Kim, S. Miyazaki
    • Journal Title

      Materials Science and Engineering A

      Volume: 644 Pages: 85-89

    • DOI

      10.1016/j.msea.2015.07.054

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A comparative study on the effects of the omega and alpha phases on the temperature dependence of shape memory behavior of a Ti-27Nb alloy2015

    • Author(s)
      Y. Al-Zain, H.Y. Kim, T. Koyano, H. Hosoda, S. Miyazaki
    • Journal Title

      Scripta Materialia

      Volume: 103 Pages: 37-40

    • DOI

      10.1016/j.scriptamat.2015.02.032

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Heating-induced martensitic transformation and time-dependent shape memory behavior of Ti-Nb-O alloy2014

    • Author(s)
      M. Tahara, T. Kanaya, H. Y. Kim, T. Inamura, H. Hosoda and S. Miyazaki
    • Journal Title

      Acta Mater.

      Volume: 80 Pages: 317-326

    • DOI

      10.1016/j.actamat.2014.07.012

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Origin of {332} twinning in metastable β-Ti alloys2014

    • Author(s)
      H. Tobe, H.Y. Kim, T. Inamura, H. Hosoda, S. Miyazaki
    • Journal Title

      Acta Materialia

      Volume: Vol.64 Pages: 345-355

    • DOI

      10.1016/j.actamat.2013.10.048

    • NAID

      120007136186

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] チタン合金のマルテンサイト変態2014

    • Author(s)
      金 熙榮
    • Journal Title

      まてりあ

      Volume: 53 Pages: 11-17

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Nanodomain structure and its effect on abnormal thermal expansion behavior of a Ti-23Nb-2Zr-0.7Ta-1.2O alloy2013

    • Author(s)
      H.Y. Kim, L. Wei, S. Kobayashi, M. Tahara, S. Miyazaki
    • Journal Title

      Acta Materialia

      Volume: Vol.61 Issue: 13 Pages: 4874-4886

    • DOI

      10.1016/j.actamat.2013.04.060

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Ti-Zr-N合金の微細組織および機械的特性に及ぼす時効処理の影響2016

    • Author(s)
      飯田 貴大, 金 熙榮, 宮崎 修一
    • Organizer
      日本金属学会春期講演大会
    • Place of Presentation
      東京理科大学(東京都葛飾区)
    • Year and Date
      2016-03-23
    • Related Report
      2015 Annual Research Report
  • [Presentation] Role of oxygen in martensitic transformation of Ti-Nb base alloys2015

    • Author(s)
      H.Y. Kim and S. Miyazaki
    • Organizer
      2015 Spring Conference of the Korean Institute of Metals and Material
    • Place of Presentation
      Changwon, Korea
    • Year and Date
      2015-04-22
    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Invited
  • [Presentation] ゴムメタルにおけるナノドメイン構造及び熱膨張特性に及ぼす酸素とNb濃度の影響2015

    • Author(s)
      薇 楽絲, 金 熙榮, 宮崎 修一
    • Organizer
      日本金属学会春期講演大会
    • Place of Presentation
      東京大学
    • Year and Date
      2015-03-18 – 2015-03-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] Ti-Nb-N合金のマルテンサイト変態に及ぼす窒素濃度の効果2014

    • Author(s)
      綿引 貴浩, 金 熙榮, 細田 秀樹, 宮崎 修一
    • Organizer
      日本金属学会秋期講演大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] ゴムメタルの粘弾性特性に及ぼす侵入型元素添加の効果2014

    • Author(s)
      西山 雄平, 金 熙榮, 宮崎 修一
    • Organizer
      日本金属学会秋期講演大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2014-09-24 – 2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Mechanisms of Unique Properties of Gum Metals in Connection with Nano-domain Phase Transformation2014

    • Author(s)
      S. Miyazaki and H.Y. Kim
    • Organizer
      International Conference on Martensitic Transformations 2014
    • Place of Presentation
      Bilbao, Spain
    • Year and Date
      2014-07-06 – 2014-07-11
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Ti-Nb-N合金におけるマルテンサイト変態の時間依存性2014

    • Author(s)
      綿引 貴浩、金 熙榮、細田 秀樹、宮崎 修一
    • Organizer
      日本金属学会2014年春期講演大会
    • Place of Presentation
      東京工業大学(東京都)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ゴムメタルの組織・変形挙動に及ぼす酸素・窒素添加の効果2013

    • Author(s)
      西山 雄平、金 熙榮、宮崎 修一
    • Organizer
      日本金属学会2013年秋期講演大会
    • Place of Presentation
      金沢大学(金沢市)
    • Related Report
      2013 Annual Research Report
  • [Presentation] Ti-Nb-O合金のマルテンサイト変態に及ぼす応力と温度の効果2013

    • Author(s)
      大島 佑典、金 熙榮、細田 秀樹、宮崎 修一
    • Organizer
      日本金属学会2013年秋期講演大会
    • Place of Presentation
      金沢大学(金沢市)
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-21   Modified: 2019-07-29  

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