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Formation mechanism of stair-like c-dislocation and development to the forest-dislocation hardening in magnesium alloys

Research Project

Project/Area Number 18K04755
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26040:Structural materials and functional materials-related
Research InstitutionToyama Prefectural University

Principal Investigator

Suzuki Mayumi  富山県立大学, 工学部, 教授 (20292245)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords林転位 / 非底面すべり / クリープ機構 / 転位再結合 / クリープ変形 / マグネシウム / 階段状c転位 / 一次錐面すべり / 転位下部組織 / 林転位強化 / 転位密度 / マグネシウム固溶体 / 高温クリープ
Outline of Final Research Achievements

The addition of rare earth elements is effective to improve high-temperature long-term (creep) strength of magnesium (Mg). However, the effect of solid solution hardening of rare earth elements is limited to the high-temperature range above the temperature range for practical use, and high alloying content that can introduce precipitates is required to achieve the strength at elevated temperatures for practical use. In this study, the strengthening effect of the forest c-dislocations introduced by plastic deformation in Mg-Y-based dilute solid solutions at temperatures below 0.5Tm (Tm: melting point) was investigated. The strengthening by the forest c-dislocations is limited to the very early stage of creep deformation and acts rather as a weakening factor on the long-time creep strength. The recombination mechanism of a- and c-dislocations at elevated temperatures was proposed as a possible factor.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の目的の一つである階段状林立c転位の導入起源を明らかにし,また,階段状c転位と可動a転位の再結合による非底面すべりの再活性化の可能性を見出すことができた.この結果は研究開始時には予想していなかったもので,当初目的に掲げていた林転位強化とは逆の方向(すなわち弱化)の効果をもたらす結果となったが,マグネシウムのような塑性加工が比較的困難な材料に対して転位の再結合を利用し,その加工性を改善できる可能性を得ることが出来た.

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (33 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (32 results) (of which Int'l Joint Research: 12 results,  Invited: 11 results)

  • [Journal Article] Effect of Fabrication Parameter on Microstructure of Mg–5.3 mass%Al–3 mass%Ca for Development of Mg Rechargeable Batteries2022

    • Author(s)
      Tsukeda Tadayoshi, Nakagawa Takuro, Moriwaki Masaya, Kikura Kensei, Sakurae Riku, Aida Tetsuo, Tabata Hironobu, Kurihara Hideki, Suzuki Mayumi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 4 Pages: 408-414

    • DOI

      10.2320/matertrans.MT-MA2022008

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-04-01
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 非底面上c 転位を含むMg-0.87Y-0.02Zn合金の0.5Tm近傍でのクリープ変形2023

    • Author(s)
      鈴木真由美,山本晃大,谷口龍太郎
    • Organizer
      公益社団法人 日本金属学会2023年春期講演(第172回)大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 階段状c転位が導入されたMg-Y-Zn希薄固溶体のクリープ強度2022

    • Author(s)
      鈴木真由美,谷口龍太郎,中村衣里
    • Organizer
      公益社団法人 日本金属学会2022年春期講演(第170回)大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Effects of step-like c-dislocations on compression strength in Mg-Y-Zn ternary solid solution alloys2021

    • Author(s)
      M. Suzuki, D. Sugita
    • Organizer
      International Conference on Processing & Manufacturing of Advanced Materials, Processing, Fabrication, Properties, Applications (THERMEC'2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Pre-strain and Heat-treatment on Compression Strength and Microstructures in Long Period Staking Ordered Type Mg-Zn-Y Alloy2021

    • Author(s)
      M. Suzuki, D. Asahara, T. Yamaguchi
    • Organizer
      International Conference on Processing & Manufacturing of Advanced Materials, Processing, Fabrication, Properties, Applications (THERMEC'2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of pre-straining on high temperature creep strength in magnesium alloys2021

    • Author(s)
      M. Suzuki, D. Sugita
    • Organizer
      15th International Conference on Creep and Fracture of Engineering Materials and Structures
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of Pre-straining and Heat-treatment on Compression Strength and Microstructure in Long Period Stacking Ordered Type Mg-Zn-Y Alloys2021

    • Author(s)
      M. Suzuki
    • Organizer
      10th International Conference on Engineering and Innovative Materials (ICEIM 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] マグネシウム基合金の高温変形挙動2021

    • Author(s)
      鈴木真由美
    • Organizer
      2021年度高温材料の変形と破壊研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Mg-Y-Zn基希薄固溶体の階段状c転位が高温強度に及ぼす影響2021

    • Author(s)
      鈴木真由美,中村衣里
    • Organizer
      一般社団法人 軽金属学会 第141回秋期大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 階段状c転位が導入されたMg-Y-Zn希薄固溶体のクリープ強度2021

    • Author(s)
      鈴木真由美,谷口龍太郎,中村衣里
    • Organizer
      公益社団法人 日本金属学会2022年春期講演(第170回)大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effects of step-like c-dislocations on compression strength in Mg-Y-Zn ternary solid solution alloys2021

    • Author(s)
      M. Suzuki, D. Sugita
    • Organizer
      International Conference on Processing & Manufacturing of Advanced Materials (Thermec' 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Pre-straining and Heat Treatment on Room Temperature and Creep Strength in a Long Period Stacking Ordered Type Mg-Zn-Y Alloy2021

    • Author(s)
      M. Suzuki, T. Yamaguchi, K. Hagihara
    • Organizer
      12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Creep Behavior of Mg-Y-Zn Ternary Dilute Solid Solution Alloys2021

    • Author(s)
      M. Suzuki, D. Sugita
    • Organizer
      15th International Conference on Creep and Fracture of Engineering Materials and Structures
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of Pre-straining and Heat-treatment on Compression Strength and Microstructure in Long Period Stacking Ordered Type Mg-Zn-Y Alloys2021

    • Author(s)
      M Suzuki
    • Organizer
      10th International Conference on Engineering and Innovative Materials (ICEIM 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of Pre-Straining on High Temperature Creep Strength in Magnesium Alloys2020

    • Author(s)
      M. Suzuki
    • Organizer
      9th International Conference on Engineering and Innovative Materials (ICEIM 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Mg-Y-Zn基希薄固溶体中に導入された非底面上c転位の熱的安定性ならびに強度への影響2020

    • Author(s)
      鈴木真由美,杉田大介
    • Organizer
      一般社団法人 軽金属学会 第139回秋期大会
    • Related Report
      2020 Research-status Report
  • [Presentation] マグネシウム基合金の高温変形挙動とミクロ組織制御による機械的性質の改善2020

    • Author(s)
      鈴木 真由美
    • Organizer
      第56回富山大学材料研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Mg-Y-Zn希薄固溶体中の階段状c転位の熱的安定性ならびに強度への影響2020

    • Author(s)
      日本金属学会2020年春期(第166回)講演大会
    • Organizer
      鈴木 真由美,杉田大介
    • Related Report
      2019 Research-status Report
  • [Presentation] マグネシウム合金の高温クリープ挙動とその強化2019

    • Author(s)
      鈴木真由美
    • Organizer
      一般社団法人 軽金属学会 第136回春期大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 長周期積層構造型Mg-Zn-Y基一方向凝固材の強度におよぼす予ひずみ付加と熱処理の影響2019

    • Author(s)
      山口達也,鈴木真由美,萩原幸司
    • Organizer
      一般社団法人 軽金属学会 第136回春期大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 予ひずみ付加によるMg-Y-Zn希薄固溶体中の階段状c転位の導入とクリープ強度2019

    • Author(s)
      鈴木真由美,杉田大介,土田成希,近藤史樹
    • Organizer
      一般社団法人 軽金属学会 第136回春期大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Effects of Straining and Heat-Treatment on Compression and Creep Strength in Magnesium based Alloys2019

    • Author(s)
      M. Suzuki
    • Organizer
      2019 8th International Conference on Engineering and Innovative Materials (ICEIM 2019)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Creep behavior and effects of the forest c-dislocation in Mg-Y-Zn Dilute Solid Solution Alloys2019

    • Author(s)
      D. Sugita, M. Suzuki
    • Organizer
      2019 8th International Conference on Engineering and Innovative Materials (ICEIM 2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] Mg-Y-Zn希薄固溶体の強度に及ぼす林転位の影響2019

    • Author(s)
      杉田大介,鈴木真由美
    • Organizer
      一般社団法人 軽金属学会 第137回秋期大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 予ひずみ付加によるMg-Y-Zn希薄固溶体中の階段状c転位の導入とクリープ強度2019

    • Author(s)
      鈴木真由美,杉田大介,土田成希,近藤史樹
    • Organizer
      一般社団法人 軽金属学会 第136回講演(春期)大会
    • Related Report
      2018 Research-status Report
  • [Presentation] マグネシウム合金の高温クリープ挙動とその強化2019

    • Author(s)
      鈴木真由美,杉田大介,土田成希,近藤史樹
    • Organizer
      一般社団法人 軽金属学会 第136回講演(春期)大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Creep behavior and effects of the forest c-dislocations in Mg-Y-Zn Dilute Solid Solution Alloys2019

    • Author(s)
      Daisuke Sugita, Mayumi Suzuki
    • Organizer
      8th International Conference on Engineering and Innovative Materials (ICEIM 2019)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of yttrium contents on creep strength in Mg-Y-Zn ternary solid solution alloys2018

    • Author(s)
      Mayumi Suzuki, Naruki Tsuchida, Fumiki Kondo
    • Organizer
      International Conference on Processing & Manufacturing of Advanced Materials (Thermec' 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Temperature dependence of creep behavior in low-stacking fault energy type Mg-Y based solid solution alloys2018

    • Author(s)
      Mayumi Suzuki, Daisuke Sugita, Fumiki Kondo
    • Organizer
      7th International Conference on Engineering and Innovative Materials (ICEIM 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 希薄Mg-Y-Zn基合金のクリープ強度に及ぼす面状積層欠陥の影響2018

    • Author(s)
      鈴木真由美
    • Organizer
      公益社団法人 日本金属学会 2018年秋期(第163回)講演大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Mg-Y-Zn希薄固溶体のクリープ挙動と林転位の影響2018

    • Author(s)
      杉田大介,土田成希,近藤史樹,鈴木真由美
    • Organizer
      一般社団法人 軽金属学会 第135回講演(秋期)大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Mg-Y-Zn希薄合金のクリープ挙動に及ぼすY濃度の影響2018

    • Author(s)
      杉田大介,土田成希,近藤史樹,鈴木真由美
    • Organizer
      第165回 超塑性研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Mg-Y-基合金のクリープ強度に対する温度の影響2018

    • Author(s)
      鈴木真由美,杉田大介,土田成希,近藤史樹
    • Organizer
      M&M 材料力学カンファレンス 2018
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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