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Design of super-long life shape memory alloy and based on incompatible domain structure

Research Project

Project/Area Number 18H01728
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26040:Structural materials and functional materials-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Inamura Tomonari  東京工業大学, 科学技術創成研究院, 教授 (60361771)

Co-Investigator(Kenkyū-buntansha) 西田 稔  九州大学, 総合理工学研究院, 教授 (90183540)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2018: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywords形状記憶合金 / マルテンサイト変態 / 相変態組織 / マルテンサイト / 形状記憶効果 / 耐久性 / ニチノール / 構造・機能材料 / フェロイック材料 / 長寿命 / 熱サイクル / ドメイン組織 / 組織制御
Outline of Final Research Achievements

In order to widely apply shape memory alloys to high-performance actuators and waste heat utilization technologies, it is necessary to extend the functional fatigue life. In order to extend the life, it is necessary to suppress lattice defects (damage at the atomic level) that accumulate in the material during driving. The internal structure of the shape memory alloy is a domain structure formed by phase transformation, but there is twist inside the domain structure, which is considered to be the source of lattice defects. In this research, using TiNi, which is a practical shape memory alloy, an alloy in which the lattice constant is controlled by added elements so as to satisfy the geometrical conditions for eliminating twists is produced. The structure, lattice defects, and performance are examined. The principle of extending the life was clarified.

Academic Significance and Societal Importance of the Research Achievements

従来知られいるねじれ消去の幾何学条件よりも,格子定数への制約が緩い条件を見出したことで,種々の形状記憶合金に応用可能な設計原理を解明できたことに学術的意義がある.また研究に供した合金は耐久性だけでなく加工性にもすぐれ,TiNi合金では不可能であった高出力アクチュエータへの応用が期待される.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (17 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 9 results,  Invited: 6 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Int'l Joint Research] University of Oxford/Mathematical Institute(英国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Comparison of <i>In Situ</i> SEM and TEM Observations of Thermoelastic Martensitic Transformation in Ti–Ni Shape Memory Alloy2020

    • Author(s)
      Y. Soejima, A. Heima, H. Akamine, T. Inamura, M. Nishida
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 61 Issue: 11 Pages: 2107-2114

    • DOI

      10.2320/matertrans.MT-M2020219

    • NAID

      130007930241

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2020-11-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Geometry of kink microstructure analysed by rank-1 connection2019

    • Author(s)
      T. Inamura
    • Journal Title

      Acta Materialia

      Volume: 173 Pages: 270-280

    • DOI

      10.1016/j.actamat.2019.05.023

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of <001>-fiber texture in cold-groove-rolled Ti-Mo-Al-Zr biomedical alloy2018

    • Author(s)
      Yuri Shinohara, Yoshiki Matsumoto, Masaki Tahara, Hideki HOSODA, Tomonari Inamura
    • Journal Title

      Materialia

      Volume: 1 Pages: 52-61

    • DOI

      10.1016/j.mtla.2018.07.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Microstructures of martensite and kink resulting from incompatibility between deformations2019

    • Author(s)
      Tomonari Inamura
    • Organizer
      RIMS Workshop: Pattern formation and defects in biology and materials science
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Emergence of power law in martensite microstructure of shape memory alloy2019

    • Author(s)
      Tomonari Inamura
    • Organizer
      Newton Institute Seminar
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ti-Ni基形状記憶合金のマルテンサイト変態サイクルに伴う変態温度変化と不適合性の関係2019

    • Author(s)
      丸田彩佳,篠原百合,田原正樹,細田秀樹,稲邑朋也
    • Organizer
      第16回ヤングメタラジスト研究交流会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ti-Ni基合金のマルテンサイト変態・逆変態サイクルに伴う変態温度変化と不適合性の関係2019

    • Author(s)
      丸田彩佳,篠原百合,田原正樹,細田秀樹,稲邑朋也
    • Organizer
      日本金属学会2019年秋期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Incompatible microstructure of martensite and kink deformation2019

    • Author(s)
      Tomonari Inamura
    • Organizer
      Mathematical design of new materials: strategies and algorithms for the design of alloys and metamaterials
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microscopy study on interface and dynamics of microstructure in shape memory alloy2018

    • Author(s)
      Tomonari Inamura
    • Organizer
      Mathematics and Science: In honour of Sir John Ball
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microscopy study on interface and dynamics of microstructure in shape memory alloy2018

    • Author(s)
      Tomonari Inamura
    • Organizer
      MPI-Oberseminar
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of kink deformation based on rank-1 connection2018

    • Author(s)
      Tomonari Inamura
    • Organizer
      The 4th International Symposium on Long-Period Stacking Ordered Structure and Millefeuille Structure
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rank-1接続に基づくキンク変形の解析2018

    • Author(s)
      稲邑朋也
    • Organizer
      軽金属学会第135回秋期大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Slip deformation behavior of a stress-induced martensite single crystal in Ti-6Mo-10Al biomedical shape memory alloy2018

    • Author(s)
      R. Hara, M. Tahara, T. Inamura, H. Hosoda
    • Organizer
      The 3rd International Symposium on Biomedical Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An in-situ observation of slip deformation in a compressed Ti-Mo-Al single crystal2018

    • Author(s)
      R. Hara, M. Tahara, T. Inamura, H. Hosoda
    • Organizer
      Thermec2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of slip deformation in stress-induced martensite single crystal of Ti-27mol%Nb alloy2018

    • Author(s)
      M. Tahara, N. Okano, T. Inamura, H. Hosoda
    • Organizer
      Thermec2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] Ti-Ni系合金,これを用いた線材,通電アクチュエータ及び温度センサ並びにTi-Ni系合金材の製造方法2018

    • Inventor(s)
      稲邑朋也,喜瀬純男ら
    • Industrial Property Rights Holder
      稲邑朋也,喜瀬純男ら
    • Industrial Property Rights Type
      特許
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report
    • Overseas

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Published: 2018-04-23   Modified: 2022-12-28  

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