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Exploring the missing link in irradiation embrittlement using ultra-small testing technologies

Research Project

Project/Area Number 19H02643
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionTohoku University

Principal Investigator

KASADA RYUTA  東北大学, 金属材料研究所, 教授 (20335227)

Co-Investigator(Kenkyū-buntansha) 近藤 創介  東北大学, 金属材料研究所, 准教授 (10563984)
余 浩  東北大学, 金属材料研究所, 助教 (10825871)
福元 謙一  福井大学, 附属国際原子力工学研究所, 教授 (30261506)
安堂 正己  国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 核融合炉材料研究開発部, 主幹研究員 (30370349)
松川 義孝  熊本大学, 大学院先端科学研究部(工), 准教授 (70566356)
藪内 聖皓  京都大学, エネルギー理工学研究所, 助教 (70633460)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Keywords超微小試験技術 / 照射硬化 / 照射脆化 / 析出物 / 界面 / イオン照射 / 圧力容器鋼 / 低放射化フェライト鋼 / ナノインデンテーション / マイクロピラー圧縮試験 / 核融合炉材料 / 原子炉材料 / ODS合金 / マイクロピラー / 材料強度 / 不均一性 / スケール性 / 統計的性質
Outline of Research at the Start

原子炉・核融合炉構造材料の「照射脆化」の機構論的理解と、それに基づく予測モデルの構築は、これらの材料を用いる機器の安全性の確保・向上において極めて重要である。この中で、材料強度変化-照射脆化相関については均一材を想定した半経験論的モデルに依存しており、照射後の変形・破壊における材料組織・構造の不均一性やスケール性の影響は考慮されておらず、材料強度変化と照射脆化の相関にミッシングリンクが存在している。本研究では、ナノインデンテーション法やマイクロピラー圧縮試験等の超微小試験技術を駆使して、微細組織要素の材料強度特性・変形・破壊の不均一性やスケール性の影響を直接的に明らかにすることを目的とする。

Outline of Final Research Achievements

This study succeeded in directly evaluating deformation and fracture phenomena of nuclear fission and fusion materials at microscale by using ultra-small testing technologies such as nanoindentation and micropillar compression tests. Microstructural factors and irradiation effects on the scale-factor of deformation and fracture behavior of oxide dispersion strengthened alloys, reactor pressure vessel steels, and tungsten coating interfaces were clarified. In particular, the mechanical properties of precipitates and interfaces, which are the missing links between microstructural changes and macroscopic deformation and fracture phenomena that are considered to be factors of irradiation embrittlement, can be directly evaluated, providing a method to integrate irradiation effects on microstructural factors that have not been considered in irradiation embrittlement models.

Academic Significance and Societal Importance of the Research Achievements

今回の研究では、既存の原子炉に用いられている圧力容器鋼や、未来のエネルギー源として開発が進められている核融合炉の厳しい環境に耐えるために必要とされる構造材料の強度特性をマイクロスケールの試験法によって評価することに成功するとともに、小さなものから大きなものの強度を予測するための要件やモデルを提示することができた。特に金属材料の脆化に関わる第2相や被覆界面のような微細組織要素そのものの強度特性や変形挙動を明らかにした成果は、安全安心に関わる材料の劣化評価技術の高度化に繋がるものであり、マルチマテリアル化が進む様々な産業分野における構造材料の安全性向上に貢献できる技術として発展しうるものである。

Report

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

    (39 results)

All 2022 2021 2020 2019 Other

All Journal Article (8 results) (of which Open Access: 5 results,  Peer Reviewed: 7 results) Presentation (27 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Remarks (4 results)

  • [Journal Article] Effects of zirconium addition on the material properties and microstructure of ODS-Cu alloys2022

    • Author(s)
      Gao Zimo、Yu Hao、Geng Diancheng、Liu Yuchen、Kondo Sosuke、Okuno Yasuki、Kasada Ryuta
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 899 Pages: 163328-163328

    • DOI

      10.1016/j.jallcom.2021.163328

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Practical method to determine the effective zero-point of indentation depth for continuous stiffness measurement nanoindentation test with Berkovich tip2022

    • Author(s)
      Geng Diancheng、Yu Hao、Okuno Yasuki、Kondo Sosuke、Kasada Ryuta
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 6391-6391

    • DOI

      10.1038/s41598-022-10490-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluating the irradiation hardening of reactor pressure vessel steels by nanoindentation hardness test and micropillar compression test2022

    • Author(s)
      Yuyang Zheng, Diancheng Geng, Hao Yu, Sosuke Kondo, Akihiko Kimura, Hideki Yuya, Ryuta Kasada
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: - Issue: 12 Pages: 1507-1518

    • DOI

      10.1080/00223131.2022.2067258

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 複合ビーム材料照射装置 DuET を用いた核融合炉材料研究と関連材料研究の展開2021

    • Author(s)
      藪内 聖皓,近藤 創介,檜木 達也,笠田 竜太
    • Journal Title

      Journal of Plasma Fusion Research

      Volume: 97 Pages: 403-418

    • NAID

      40022658393

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Bonding strength evaluation of explosive welding joint of tungsten to ferritic steel using ultra-small testing technologies2021

    • Author(s)
      Wu Xiangyu、Kondo Sosuke、Yu Hao、Okuno Yasuki、Ando Masami、Kurotaki Hironori、Tanaka Shigeru、Hokamoto Kazuyuki、Ochiai Ryosuke、Konishi Satoshi、Kasada Ryuta
    • Journal Title

      Materials Science and Engineering: A

      Volume: 826 Pages: 141995-141995

    • DOI

      10.1016/j.msea.2021.141995

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Radiation tolerance of alumina scale formed on FeCrAl ODS ferritic alloy2021

    • Author(s)
      Yu Hao、Wang Haoran、Kondo Sosuke、Okuno Yasuki、Kasada Ryuta、Oono-Hori Naoko、Ukai Shigeharu
    • Journal Title

      Nuclear Materials and Energy

      Volume: 29 Pages: 101102-101102

    • DOI

      10.1016/j.nme.2021.101102

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of irradiation hardening in ODS-Cu and non ODS-Cu by nanoindentation hardness test and micro-pillar compression test after self-ion irradiation2021

    • Author(s)
      Liu Yuchen、Kondo Sosuke、Yu Hao、Yabuuchi Kiyohiro、Kasada Ryuta
    • Journal Title

      Nuclear Materials and Energy

      Volume: 26 Pages: 100903-100903

    • DOI

      10.1016/j.nme.2021.100903

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Statistical Approach for Understanding the Effect of Specimen Size on the Yield Stress and Its Scattering in Mechanically-Alloyed Cu and ODS-Cu Obtained by Micro-Pillar Compression Test2020

    • Author(s)
      Yuchen LIU, Sosuke KONDO, Hao YU, Kiyohiro YABUUCHI, Ryuta KASADA
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 61 Issue: 5 Pages: 955-962

    • DOI

      10.2320/matertrans.MT-MBW2019005

    • NAID

      130007835699

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2020-05-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 連続剛性測定法を用いたナノインデンテーション試験におけるゼロ点補正法の最適化2022

    • Author(s)
      耿 殿程、余 浩、奥野 泰希、近藤 創介、笠田 竜太
    • Organizer
      日本金属学会2022年春期大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Determining the mechanical properties of VPS W coated F82H bonding interface using micro-cantilever bending and double-notch shearing2022

    • Author(s)
      WU XIANGYU、笠田 竜太、近藤 創介、余 浩、奥野 泰希
    • Organizer
      日本金属学会2022年春期大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Cr23C6の強度特性に及ぼすホウ素置換の影響2021

    • Author(s)
      Noaomi Mizumoto, Yoshitaka Matsukawa, Hao Yu, Sosuke Kondo, Ryuta Kasada
    • Organizer
      2021年度日本金属学会No.82「微小領域の力学特製評価とマルチスケールモデリング」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Comparative evaluation of bonding strength of vacuum plasma spraying/explosive welding W-F82H using ultra-small double-notch shear compression test2021

    • Author(s)
      WU XIANGYU、KASADA RYUTA、KONDO SOSUKE、YU HAO、OKUNO YASUKI
    • Organizer
      The 30th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 複合ビーム材料照射装置DuETを用いた核融合炉材料研究の展開2021

    • Author(s)
      笠田竜太、近藤創介、藪内聖皓、檜木達也
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Bonding strength evaluation of VPS-tungsten coated F82H using ultrasmall double notch shear compression testing2021

    • Author(s)
      Wu Xiangyu, S.Kondo, H. Yu, Y. Okuno, R. Kasada
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of ODS-Cu to overcome the trade-off issue between thermal conductivity and mechanical strength2021

    • Author(s)
      Ryuta Kasada
    • Organizer
      20th International Conderence on Fusion Reactor Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dissimilar bonding strength measurement of tungsten-coated ferritic steels using ultra-small double-notch shear compression test2021

    • Author(s)
      WU XIANGYU、KASADA RYUTA、KONDO SOSUKE、YU HAO、OKUNO YASUKI
    • Organizer
      20th International Conderence on Fusion Reactor Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of B substitution on the chemical bonding state of Cr23C6 investigated by SXES and DFT calculation2021

    • Author(s)
      Noaomi Mizumoto, Yoshitaka Matsukawa, Hao Yu, Sosuke Kondo, Ryuta Kasada
    • Organizer
      20th International Conderence on Fusion Reactor Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterization of micro-scale strength and deformation in ion- irradiated RAFM steel F82H using micro-pillar compression test2021

    • Author(s)
      Dianchen Geng, Hao Yu, Sosuke Kondo, Masami Ando, Takashi Nozawa, Ryuta Kasada
    • Organizer
      20th International Conderence on Fusion Reactor Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cr23C6の強度特性に及ぼすホウ素置換の影響2021

    • Author(s)
      水元 希、近藤 創介、松川 義孝、余 浩、笠田 竜太
    • Organizer
      日本金属学会2021年秋期大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] M23C6単結晶の強度特性に及ぼすMの化学組成の影響2021

    • Author(s)
      松戸 玲菜、笠田 竜太、水元 希、耿 殿程
    • Organizer
      日本金属学会2021年秋期大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] On the correlation of Vickers hardness and nanoindentation hardness in Fe-Cr alloys2021

    • Author(s)
      Geng Diancheng、Hao Yu、Okuno Yasuki、Kondo Sosuke、Kasada Ryuta
    • Organizer
      日本金属学会2021年秋期大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Cr23C6の強度特性に及ぼすB置換の影響2021

    • Author(s)
      水元 希、近藤 創介、松川 義孝、余 浩、笠田 竜太
    • Organizer
      日本金属学会2021春期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ナノインデンテーション硬さ試験におけるパイルアップ補正法の開発2021

    • Author(s)
      松戸 玲菜、耿 殿程、笠田 竜太
    • Organizer
      日本金属学会2021春期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Study on specimen size effect of interfacial shear strength of W-coated ferritic steel by micro-scale double notch shear compression test2021

    • Author(s)
      WU XIANGYU、安堂 正巳、笠田 竜太、近藤 創介、YU HAO
    • Organizer
      日本金属学会2021春期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電子線照射A533B鋼の降伏応力に及ぼすマイクロピラーサイズの影響2021

    • Author(s)
      笠田 竜太、鄭 宇暘、近藤 創介、余 浩、木村 晃彦、熊野 秀樹
    • Organizer
      日本金属学会2021春期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 酸化物分散強化銅合金の材料特性と耐照射性2020

    • Author(s)
      Liu Yuchen, 笠田竜太,Gao Zimo, Yu Hao, 近藤創介,藪内聖皓,Mohamad Aghamiri,大野直子,鵜飼重治,能登裕之,菱沼良光,室賀健夫
    • Organizer
      プラズマ・核融合学会2020年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation of bonding strength of explosive welded W/F82H by ultra-small tensile and compression tests2020

    • Author(s)
      WU XIANGYU、笠田 竜太、近藤 創介、余 浩、安堂 正己
    • Organizer
      日本金属学会2020年秋期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Comparison between nanoindentation hardness test and micro-pillar compression test in the evaluation of irradiation hardening for ODS-Cu and non ODS-Cu after self-ion irradiation2020

    • Author(s)
      Yuchen Liu, Sosuke Kondo, Hao Yu, Kiyohiro Yabuuchi, Ryuta Kasada
    • Organizer
      日本金属学会2020年秋期大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation of Irradiation Hardening Behavior for ODS-Cu Based on Statistical Analysis of Micro-Pillar Compression Test2020

    • Author(s)
      Yuchen LIU, Sosuke KONDO, Hao YU, Kiyohiro YABUUCHI, Ryuta KASADA
    • Organizer
      日本金属学会2020年春期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Evaluation of bonding strength of explosive welded W/F82H using FIB ultra-small tensile test2020

    • Author(s)
      WU XIANGYU、Ando Masami、Kasada Ryuta、Kondo Sosuke、YU Hao
    • Organizer
      日本金属学会2020年春期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] クロム炭化物の強度特性に及ぼすホウ素添加の影響2020

    • Author(s)
      水元希、近藤 創介、松川 義孝、余浩、笠田 竜太
    • Organizer
      日本金属学会2020年春期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] RPV鋼におけるビッカース硬さ‐ナノインデンテーション硬さ相関2020

    • Author(s)
      鄭宇暘、笠田竜太、近藤創介、余浩、木村晃彦、熊野秀樹
    • Organizer
      日本金属学会2020年春期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Evaluation of irradiation hardening of ion-irradiated ODS-Cu Alloy using ultra-small testing technologies (USTT)2019

    • Author(s)
      Yuchen LIU, Sosuke KONDO, Hao YU, Kiyohiro YABUUCHI, Ryuta KASADA
    • Organizer
      日本金属学会2019年秋期大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Evaluation of ion irradiation effect on mechanical properties of ODS-Cu alloy using ultra-small testing technologies2019

    • Author(s)
      Yuchen LIU, Sosuke KONDO, Hao YU, Kiyohiro YABUUCHI, Ryuta KASADA
    • Organizer
      ICFRM-19
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of irradiation hardening in ion-irradiated ODS-Cu alloy using ultra-small testing technologies2019

    • Author(s)
      Yuchen LIU, Sosuke KONDO, Hao YU, Kiyohiro YABUUCHI, Ryuta KASADA
    • Organizer
      SMINS-5
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] SMINS-5発表

    • URL

      http://web.tohoku.ac.jp/imr-numat/blog/2019/07/08/smins-5%e7%99%ba%e8%a1%a8%ef%bc%88%e8%bf%91%e8%97%a4%e3%80%81%e4%bd%99%e3%80%81liu%ef%bc%89/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 金属学会2019秋期大会発表

    • URL

      http://web.tohoku.ac.jp/imr-numat/blog/2019/09/11/%e9%87%91%e5%b1%9e%e5%ad%a6%e4%bc%9a2019%e7%a7%8b%e6%9c%9f%e5%a4%a7%e4%bc%9a%e7%99%ba%e8%a1%a8%ef%bc%88liuwang%ef%bc%89/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 日本金属学会2020年春期大会発表

    • URL

      http://web.tohoku.ac.jp/imr-numat/blog/2020/02/06/%e6%97%a5%e6%9c%ac%e9%87%91%e5%b1%9e%e5%ad%a6%e4%bc%9a2020%e5%b9%b4%e6%98%a5%e6%9c%9f%e5%a4%a7%e4%bc%9a%e7%99%ba%e8%a1%a8%e4%ba%88%e5%ae%9a/

    • Related Report
      2019 Annual Research Report
  • [Remarks] ICFRM-19@La Jolla, CA, US

    • URL

      http://web.tohoku.ac.jp/imr-numat/blog/2019/10/24/icfrm-19la-jolla-ca-us-kasada-kondo-yu-liu-wang/

    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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