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Competitive understanding of hydrogen embrittlement and ductile fracture based on IMC particles in Al-Zn-Mg alloys

Research Project

Project/Area Number 21K14037
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionIwate University

Principal Investigator

Shimizu Kazuyuki  岩手大学, 理工学部, 助教 (30748760)

Project Period (FY) 2021-04-01 – 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 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords水素脆性 / アルミニウム合金 / 放射光X線CT / 変形破壊挙動 / 水素トラップ / 金属間化合物粒子 / Al-Zn-Mg合金 / 水素脆化 / 放射光 / X線トモグラフィー
Outline of Research at the Start

本提案は、Al-Zn-Mg合金中の金属間化合物(IMC)粒子に依存する、水素脆性破壊・延性破壊の競合理解を目的とする。申請者は、直近の研究で、IMC粒子への優先的水素トラップにより、水素脆化を抑制できることを発見した。これにより、IMC粒子による水素脆化抑制を期待できるが、他方で、IMC粒子は延性破壊の核としても振る舞う。強度-耐水素脆性(延性)バランスの優れたAl-Zn-Mg合金を創製するためには、このIMC粒子の破壊にもたらす競合効果を理解する必要がある。本提案では、合金の破壊挙動を放射光その場観察し、独自の水素解析技術により、IMC粒子の正負の効果の競合理解を達成する。

Outline of Final Research Achievements

Overcoming hydrogen embrittlement is a challenge in strengthening Al-Zn-Mg alloys. As a specific method to overcome this problem, dispersion of intermetallic compound particles has been proposed in this study. Using synchrotron 3D/4D fracture analysis and hydrogen partitioning analysis, the challenge of increasing the strength and ductility of Al-Zn-Mg alloys by particle dispersion was taken up.
Al7Cu2Fe and Mn-bearing particles were selected as the main intermetallic compound particles. The study has demonstrated both experimentally and computationally that Mn-bearing dispersoids with high internal hydrogen trapping capacity are formed in Mn-added alloys, and that hydrogen embrittlement is suppressed. The Mn particles are more finely morphologically controllable than Al7Cu2Fe, and are therefore strongly expected to contribute to improving the mechanical properties of the alloys.

Academic Significance and Societal Importance of the Research Achievements

Al-Zn-Mg合金は代表的な高強度アルミニウム実用合金であり、航空機や新幹線など重量比強度が要求される部材に用いられている。輸送コストや環境負荷の観点から高強度化が希求されているが、水素脆化がそれを阻んでいた。本研究では、新しい水素脆化の克服法として粒子分散を学術的に探究した。合金の内部に墓相と異なる第二相を形成させ、これに水素を固定させるという視点は新奇であり、今後は学術的・産業的展開を大いに期待できる。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (24 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] Influence of Hydrogen on the Damage Behavior of IMC Particles in Al–Zn–Mg–Cu Alloys2022

    • Author(s)
      Oikawa Ryoichi、Shimizu Kazuyuki、Kamada Yasuhiro、Toda Hiroyuki、Fujihara Hiro、Uesugi Masayuki、Takeuchi Akihisa
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 12 Pages: 1607-1616

    • DOI

      10.2320/matertrans.MT-L2022020

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-12-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Suppression of Hydrogen Embrittlement due to Local Partitioning of Hydrogen to Dispersed Intermetallic Compound Particles in Al–Zn–Mg–Cu Alloys2022

    • Author(s)
      Fujihara Hiro、Shimizu Kazuyuki、Toda Hiroyuki、Takeuchi Akihisa、Uesugi Masayuki
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 10 Pages: 1406-1415

    • DOI

      10.2320/matertrans.MT-L2022007

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-10-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of hydrogen on the damage behavior of IMC particles in Al-Zn-Mg-Cu alloys2022

    • Author(s)
      Oikawa Ryoichi、Shimizu Kazuyuki、Kamada Yasuhiro、Toda Hiroyuki、Fujihara Hiro、Uesugi Masayuki、Takeuchi Akihisa
    • Journal Title

      Journal of Japan Institute of Light Metals

      Volume: 72 Issue: 7 Pages: 411-419

    • DOI

      10.2464/jilm.72.411

    • ISSN
      0451-5994, 1880-8018
    • Year and Date
      2022-07-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Suppressed hydrogen embrittlement of high-strength Al alloys by Mn-rich intermetallic compound particles2022

    • Author(s)
      Xu Yuantao、Toda Hiroyuki、Shimizu Kazuyuki、Wang Yafei、Gault Baptiste、Li Wei、Hirayama Kyosuke、Fujihara Hiro、Jin Xuejun、Takeuchi Akihisa、Uesugi Masayuki
    • Journal Title

      Acta Materialia

      Volume: 236 Pages: 118110-118110

    • DOI

      10.1016/j.actamat.2022.118110

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In-situ 3D observation of hydrogen-assisted particle damage behavior in 7075 Al alloy by synchrotron X-ray tomography2022

    • Author(s)
      Wang Yafei、Toda Hiroyuki、Xu Yuantao、Shimizu Kazuyuki、Hirayama Kyosuke、Fujihara Hiro、Takeuchi Akihisa、Uesugi Masayuki
    • Journal Title

      Acta Materialia

      Volume: 227 Pages: 117658-117658

    • DOI

      10.1016/j.actamat.2022.117658

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 清水一行, 土屋昇大, 戸田裕之, 藤原比呂, 平山恭介2023

    • Author(s)
      Al-Zn-Mg合金中のT相優先析出による水素脆化防止挙動
    • Organizer
      日本金属学会第172回春期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Al-Zn-Mg-Cu系合金の水素脆化における高温時効の影響2022

    • Author(s)
      小野竜司, 清水一行, 鎌田康寛, 戸田裕之, 藤原比呂, 竹内晃久
    • Organizer
      軽金属学会第142回春期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Al-Mg-Si合金中のブリスターの高温曝露下での成長挙動2022

    • Author(s)
      八重樫祥之, 清水一行, 鎌田康寛, 戸田裕之, 藤原比呂, 竹内晃久
    • Organizer
      軽金属学会第142回春期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Hydrogen embrittlement prevention in Al-Zn-Mg by Sn addition2022

    • Author(s)
      B. Sharma, Y. Wang, H. Fujihara, K. Shimizu, K. Hirayama, A. Takeuchi, M. Uesugi, H. Toda
    • Organizer
      軽金属学会第142回春期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小野竜司, 清水一行, 鎌田康寛, 戸田裕之, 藤原比呂, 上椙真之, 竹内晃久2022

    • Author(s)
      Al-Zn-Mg-Cu合金の時効析出と水素脆化挙動
    • Organizer
      軽金属学会第143回秋期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Al-Zn-Mg合金におけるT相の水素トラップと水素脆化防止2022

    • Author(s)
      清水一行, 戸田裕之, 藤原比呂, 平山恭介, 山口正剛
    • Organizer
      軽金属学会第143回秋期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Al-Zn-Mg合金の水素脆化防止2022

    • Author(s)
      戸田裕之, 清水一行, 平山恭介, 藤原比呂, Sharma Bhupendra, Yafei Wang
    • Organizer
      軽金属学会第143回秋期大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Hydrogen embrittlement in Al-Zn-Mg alloys: Semi-spontaneous interfacial decohesion of precipitates2022

    • Author(s)
      H. Toda, M. YAMAGUCHI, T. TSURU, K. SHIMIZU, H. FUJIHARA, K. HIRAYAMA, K. EBIHARA, K. MATSUDA
    • Organizer
      ICAA18
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Improved resistance to hydrogen embrittlement by switched age-hardening precipitates for high-strength aluminum alloys2022

    • Author(s)
      Y. WANG, B. SHARMA, Y. XU, K. SHIMIZU, H. FUJIHARA, K. HIRAYAMA, A. Takeuchi, M. Uesugi, H. Toda
    • Organizer
      ICAA18
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Prevention of hydrogen embrittlement via preferential hydrogen partitioning to particles2022

    • Author(s)
      K. SHIMIZU, H. TODA, H. FUJIHARA, K. HIRAYAMA, M. Yamaguchi, A. Takeuchi
    • Organizer
      ICAA18
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effect of high temperature aging on hydrogen embrittlement in 7XXX alloys2022

    • Author(s)
      R. ONO, K. SHIMIZU, Y. KAMADA, H. TODA, H. FUJIHARA, A. TAKEUCHI
    • Organizer
      ICAA18
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Al-Zn-Mg-Cu合金中のIMC粒子損傷に及ぼす水素の影響2021

    • Author(s)
      及川涼一, 清水一行, 鎌田康寛, 戸田裕之
    • Organizer
      軽金属学会第140回春期大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 7000系アルミニウム合金の水素脆化挙動とその防止2021

    • Author(s)
      戸田裕之, Yafei Wang, Yuantao Xu, 清水一行, 平山恭介, 藤原比呂, 竹内晃久, 上椙昌之
    • Organizer
      軽金属学会第141回秋期大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Al-Zn-Mg-Cu合金の水素脆化挙動に及ぼすMn添加の影響2021

    • Author(s)
      及川涼一, 清水一行, 鎌田康寛, 戸田裕之, 竹内晃久
    • Organizer
      軽金属学会第141回秋期大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 微量添加元素XによるAl-Zn-Mg-X合金の水素脆化防止2021

    • Author(s)
      清水一行, 戸田裕之, 藤原比呂, 平山恭介, 上椙真之, 竹内晃久
    • Organizer
      日本鉄鋼協会第183回春季講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Hydrogen embrittlement mechanism of Al-Zn-Mg alloys: semi-spontaneous interfacial decohesion2021

    • Author(s)
      H. Toda, M. Yamaguchi, T. Tsuru, K. Shimizu, K. Hirayama, K. Ebihara, K. Matsuda
    • Organizer
      MRM2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Patent(Industrial Property Rights)] アルミニウム合金材の水素脆化防止方法および水素脆化防止剤2022

    • Inventor(s)
      清水一行、戸田裕之、山口正剛
    • Industrial Property Rights Holder
      清水一行、戸田裕之、山口正剛
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-063424
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] アルミニウム合金材の水素脆化防止剤2022

    • Inventor(s)
      清水一行、戸田裕之、山口正剛
    • Industrial Property Rights Holder
      清水一行、戸田裕之、山口正剛
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 特許権2021

    • Inventor(s)
      清水一行、戸田裕之、山口正剛
    • Industrial Property Rights Holder
      岩手大学、九州大学、原子力研究開発機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-103677
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2024-01-30  

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