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Microstructure control of magnesium alloy by dieless drawing with non-uniform temperature and strain rate

Research Project

Project/Area Number 19H02476
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionThe University of Tokyo

Principal Investigator

Furushima Tsuyoshi  東京大学, 生産技術研究所, 准教授 (30444938)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Keywordsダイレス引抜き / マグネシウム合金 / 結晶組織制御 / その場観察 / 生体吸収性材料 / マグネシウム合金管 / 塑性加工 / 非一様場 / マグネシウム
Outline of Research at the Start

輸送機器の軽量化や生体吸収性材料として用いられるマグネシウム合金(Mg)合金の低強度・低延性化・低腐食性を解決する手法として結晶組織制御が有効である.本研究は,局所加熱,引張変形と被加工材の移動によって非一様の温度場・ひずみ速度場・ひずみ場を実現するダイレス引抜き法における双晶誘起動的再結晶を基にした組織制御法を開発する.非一様場の環境下で塑性変形と双晶形成に伴う動的再結晶の進展を,局所加熱顕微鏡下のその場観察によって明らかにする.非一様場環境下における組織形成メカニズムを解明し,ダイレス引抜きによるMg合金の組織制御法を確立し,高強度・高延性・高耐腐食性を持つ高性能Mg合金極細管を創製する.

Outline of Final Research Achievements

In this study, we focused on plastic deformation phenomena in the characteristic "non-uniform field" observed in dieless drawing, and developed a new metal forming method induced by non-uniform temperature, strain rate, and strain fields, as well as a method to control twinning-induced crystal structure. We intentionally make non-uniform temperature, strain rate, and strain fields, continuously observe plastic deformation and microstructural changes. A new method to control the microstructure associated with plastic deformation and twin formation in non-uniform temperature, strain rate, and strain fields is proposed. These methods to the development of high-performance small and thin-walled magnesium alloy tubes with fine crystal grains by die-less drawing can be developed.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した結晶組織制御法に基づくダイレス引抜き加工方法は,血管狭窄症などを治癒する生体吸収性マグネシウムステントに応用することが可能である.血管内で治癒後にステントが分解されるため,ステント除去の再手術が不要であり,患者のクオリティライフの向上に寄与できる.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (11 results)

All 2022 2021 2020 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Continuous observation of twinning and dynamic recrystallization in ZM21 magnesium alloy tubes during locally heated dieless drawing2022

    • Author(s)
      Du Peihua、Furusawa Shusaku、Furushima Tsuyoshi
    • Journal Title

      Journal of Magnesium and Alloys

      Volume: 10 Issue: 3 Pages: 730-742

    • DOI

      10.1016/j.jma.2021.06.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of microstructure on outer surface roughening of magnesium alloy tubes in die-less mandrel drawing2022

    • Author(s)
      Kishimoto Takuma、Du Peihua、Furushima Tsuyoshi
    • Journal Title

      Journal of Magnesium and Alloys

      Volume: 10 Issue: 10 Pages: 2730-2744

    • DOI

      10.1016/j.jma.2022.02.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-Temperature Tensile Testing of Micro-scaled Metal Foils Using Rectangular Samples by Resistance Heating-Assisted System Incorporating Digital Image Correlation with Laser Speckles2022

    • Author(s)
      Zheng Qiu、Furushima Tsuyoshi
    • Journal Title

      Journal of Materials Engineering and Performance

      Volume: - Issue: 19 Pages: 8767-8774

    • DOI

      10.1007/s11665-022-07758-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of high-temperature tensile behavior for metal foils by a novel resistance heating assisted tensile testing system using samples with optimized structures2021

    • Author(s)
      Zheng Qiu、Furushima Tsuyoshi
    • Journal Title

      Journal of Materials Science & Technology

      Volume: 94 Pages: 216-229

    • DOI

      10.1016/j.jmst.2021.03.061

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microstructure and performance of biodegradable magnesium alloy tubes fabricated by local-heating-assisted dieless drawing2020

    • Author(s)
      Du Peihua、Furusawa Shusaku、Furushima Tsuyoshi
    • Journal Title

      Journal of Magnesium and Alloys

      Volume: 8 Issue: 3 Pages: 614-623

    • DOI

      10.1016/j.jma.2020.05.009

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of uniform plastic deformation for pure titanium foils by applying pre-strain combining with resistance heating method for microforming2020

    • Author(s)
      Zheng Qiu、Furushima Tsuyoshi
    • Journal Title

      Journal of Materials Research and Technology

      Volume: 9 Issue: 6 Pages: 12685-12696

    • DOI

      10.1016/j.jmrt.2020.08.108

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] セミダイレス引抜きと空引きの複合プロセスによる薄肉・平滑な表面を有する生体吸収性マグネシウム合金管の創製2022

    • Author(s)
      117)岸本拓磨,古島剛
    • Organizer
      日本塑性加工学会2022年度 塑性加工春季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of high-temperature tensile testing system incorporating digital image correlation with laser speckles for micro-scaled metal foils2021

    • Author(s)
      Qiu Zheng, Tsuyoshi Furushima
    • Organizer
      The 13th Asian Workshop on Micro/Nano Forming Technology (AWMFT2021) and The 3rd Asian Pacific Symposium on Technology of Plasticity (APSTP2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マグネシウム合金管のセミダイレス引抜きにおける外面の表面あれ進展挙動2021

    • Author(s)
      岸本拓磨,P. Du,古島剛
    • Organizer
      日本塑性加工学会第72回塑性加工連合講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ダイレスフォーミングによる難加工性マグネシウム合金極細薄肉管の創製と医療用分解性ステント形状の創成2021

    • Author(s)
      古島 剛
    • Organizer
      日本塑性加工学会関西支部2021年度総会第57期総会・支部講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 変形加工学研究室Website

    • URL

      https://www.furulab.iis.u-tokyo.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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