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Investigation of the Effects of Hydrogen on Neutron Irradiation Degradation of Ferritic Steel through the Development of High-Temperature Hydrogen Atmosphere Irradiation

Research Project

Project/Area Number 20H02661
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

Toyama Takeshi  東北大学, 金属材料研究所, 准教授 (50510129)

Co-Investigator(Kenkyū-buntansha) 秋山 英二  東北大学, 金属材料研究所, 教授 (70231834)
波多野 雄治  富山大学, 学術研究部理学系, 教授 (80218487)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Keywords中性子照射 / 陽電子消滅 / 3次元アトムプローブ / 原子炉圧力容器鋼 / 照射欠陥 / 水素
Outline of Research at the Start

鉄-クロム系フェライト鋼は、現行軽水炉のみならず次世代炉や核融合炉でも期待される材料である。これら炉での実使用環境では、材料には照射欠陥に加えて水素も導入される。照射欠陥と水素とは強く相互作用するため、照射組織の形成やそれによる照射劣化に対する水素の影響が指摘されてきたが、詳しいことは分かっていない。本研究では、高温・水素雰囲気での中性子照射方法を開発することにより、中性子照射と水素導入・蓄積との重畳効果を調べ、照射劣化や照射組織の形成・発達に対する水素効果を明らかにしようとする。これにより、フェライト鋼の信頼性向上に寄与することを目指す。

Outline of Final Research Achievements

We investigated the effect of hydrogen on neutron irradiation effects in ferritic steel. After neutron irradiation of A533B steel (a representative material for reactor pressure vessels) in vacuum or hydrogen environments, we examined the effects of hydrogen on the formation and growth of irradiation defects (atomic vacancy clusters), the diffusion behavior of solute atoms, and the solubility limit concentration. Copper was chosen as the solute atom, which is important in reactor pressure vessel steel. In the formation and growth of irradiation defects, it was suggested that the growth of irradiation defects might be suppressed when neutron irradiation occurred in a hydrogen environment. On the other hand, in solute atom diffusion and solid solution, the effect of hydrogen was hardly observed. This is thought to be due to the bonding between vacancies and hydrogen.

Academic Significance and Societal Importance of the Research Achievements

フェライト鋼は最重要の原子力材料の一つであり、中性子照射による材料特性劣化や水素脆化が盛んに研究されているが、照射と水素との重畳効果を調べた研究例は多くない。本研究では、同一試料を真空中または水素環境下で中性子照射し、照射欠陥や溶質原子の挙動に対する水素効果を調べた。また、水素環境下での中性子照射を行うための照射装置を開発した。以上により、照射・水素の重畳効果研究の端緒となる結果を報告したとともに、今後さらなる照射・水素研究を進展させる素地を整えることができた。今後、金研大洗センターの共同利用照射を通して幅広い原子力材料研究に利用されることが見込まれる。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (38 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (18 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 18 results,  Open Access: 4 results) Presentation (16 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Int'l Joint Research] SCK CEN(ベルギー)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 北京科技大学/合肥工業大学(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] SCK CEN(ベルギー)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Manchester(英国)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Formulation of high-temperature strength equation of 9Cr-ODS tempered martensitic steels using the Larson?Miller parameter and life-fraction rule for rupture life assessment in steady-state, transient, and accident conditions of fast reactor fuel2024

    • Author(s)
      Miyazawa Takeshi、Tanno Takashi、Imagawa Yuya、Hashidate Ryuta、Yano Yasuhide、Kaito Takeji、Ohtsuka Satoshi、Mitsuhara Masatoshi、Toyama Takeshi、Ohnuma Masato、Nakashima Hideharu
    • Journal Title

      Journal of Nuclear Materials

      Volume: 593 Pages: 155008-155008

    • DOI

      10.1016/j.jnucmat.2024.155008

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanical Properties of Neutron Irradiated Zr-Based Bulk Metallic Glasses2023

    • Author(s)
      YAMASAKI Tohru、YAMAZAKI Masanori、TOYAMA Takeshi
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 72 Issue: 3 Pages: 248-253

    • DOI

      10.2472/jsms.72.248

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2023-03-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Defect Analysis of Matrix Damage in Reactor Pressure Vessel Steel Using WB-STEM2023

    • Author(s)
      Yoshida Kenta、Toyama Takeshi、Inoue Koji、Nagai Yasuyoshi、Shimodaira Masaki
    • Journal Title

      Materia Japan

      Volume: 62 Issue: 3 Pages: 154-158

    • DOI

      10.2320/materia.62.154

    • ISSN
      1340-2625, 1884-5843
    • Year and Date
      2023-03-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The neglected activation of tantalum in reduced activation materials2023

    • Author(s)
      Zhang Lei、Du Yufeng、Han Wentuo、Yi Xiaoou、Liu Pingping、Yoshida Kenta、Toyama Takeshi、Xu Chi、Zhan Qian、Nagai Yasuyoshi、Ohnuki Somei、Wan Farong
    • Journal Title

      Nuclear Materials and Energy

      Volume: 35 Pages: 101432-101432

    • DOI

      10.1016/j.nme.2023.101432

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Irradiation effects on binary tungsten alloys at elevated temperatures: Vacancy cluster formation, precipitation of alloying elements and irradiation hardening2023

    • Author(s)
      Wang Jing、Hatano Yuji、Toyama Takeshi、Hinoki Tatsuya、Yabuuchi Kiyohiro、Zhang Yi-fan、Ma Bing、Spitsyn Alexander V.、Bobyr Nikolay P.、Inoue Koji、Nagai Yasuyoshi
    • Journal Title

      Materials & Design

      Volume: 229 Pages: 111899-111899

    • DOI

      10.1016/j.matdes.2023.111899

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High Temperature Mechanical Properties and Microstructure in 9Cr or 12Cr Oxide Dispersion Strengthened Steels2023

    • Author(s)
      Mitsuhara Masatoshi、Kurino Koichi、Yano Yasuhide、Ohtsuka Satoshi、Toyama Takeshi、Ohnuma Masato、Nakashima Hideharu
    • Journal Title

      Tetsu-to-Hagane

      Volume: 109 Issue: 3 Pages: 189-200

    • DOI

      10.2355/tetsutohagane.TETSU-2022-080

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct observation of voids decorated with transmuted rhenium atoms in neutron-irradiated tungsten by correlative use of TEM and APT2023

    • Author(s)
      Koji Inoue, Taiki Yamashita, Shuhei Nogami, Akira Hasegawa, Takeshi Toyama, Yasuyoshi Nagai
    • Journal Title

      Materialia

      Volume: 32 Pages: 101963-101963

    • DOI

      10.1016/j.mtla.2023.101963

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Creep deformation and rupture behavior of 9Cr-ODS steel cladding tube at high temperatures from 700°C to 1000°C2023

    • Author(s)
      Imagawa Yuya、Hashidate Ryuta、Miyazawa Takeshi、Onizawa Takashi、Ohtsuka Satoshi、Yano Yasuhide、Tanno Takashi、Kaito Takeji、Ohnuma Masato、Mitsuhara Masatoshi、Toyama Takeshi
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: 60 Issue: 6 Pages: 1-16

    • DOI

      10.1080/00223131.2023.2269178

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Full-stage precipitation during aging of Cu-0.55Cr-0.07Zr alloy for high heat flux fusion reactor technology2022

    • Author(s)
      Hughes J.、Toyama T.、Gorley M.、Jimenez-Melero E.
    • Journal Title

      Journal of Materials Research and Technology

      Volume: 20 Pages: 801-810

    • DOI

      10.1016/j.jmrt.2022.07.113

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of rhenium addition on deuterium retention in neutron-irradiated tungsten2022

    • Author(s)
      Nobuta Y.、Toyama T.、Matsumoto A.、Shimada M.、Oya Y.、Inoue K.、Nagai Y.、Hatano Y.
    • Journal Title

      Journal of Nuclear Materials

      Volume: 566 Pages: 153774-153774

    • DOI

      10.1016/j.jnucmat.2022.153774

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of a multipurpose rig for material irradiation tests in BR22022

    • Author(s)
      Rossaert B.、Toyama T.、Yamazaki M.、Suzuki K.、Narui M.、Shikama T.、Sikik E.、Jacquet P.、Van Dyck S.
    • Journal Title

      Journal of Nuclear Materials

      Volume: 565 Pages: 153742-153742

    • DOI

      10.1016/j.jnucmat.2022.153742

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neutron irradiation of tungsten in hydrogen environment at HFIR2022

    • Author(s)
      Cetiner Nesrin O.、Hatano Yuji、McDuffee Joel L.、Ilas Dan、Katoh Yutai、Geringer Josina W.、Toyama Takeshi
    • Journal Title

      Fusion Engineering and Design

      Volume: 178 Pages: 113089-113089

    • DOI

      10.1016/j.fusengdes.2022.113089

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microstructure, hardening and deuterium retention in CVD tungsten irradiated with neutrons at temperatures of defect recovery stages II and III2022

    • Author(s)
      Yi Xiao-Ou、Kuwabara Tatsuya、Alimov Vladimir Kh.、Du Yu-Feng、Han Wen-Tuo、Liu Ping-Ping、Yan Bin-You、Song Jiu-Peng、Yoshida Kenta、Toyama Takeshi、Wan Fa-Rong、Ohnuki Somei、Hatano Yuji、Nagai Yasuyoshi
    • Journal Title

      Tungsten

      Volume: 4 Issue: 3 Pages: 248-260

    • DOI

      10.1007/s42864-022-00161-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Close-up tracing of fatigue precrack evolution and reliable fracture toughness evaluation by the precracked specimens in an ITER specification W plate2021

    • Author(s)
      Tokunaga Kazutoshi、Matsuo Satoru、Kurishita Hiroaki、Toyama Takeshi、Hasegawa Makoto、Nakamura Kazuo
    • Journal Title

      Journal of Nuclear Materials

      Volume: 553 Pages: 153054-153054

    • DOI

      10.1016/j.jnucmat.2021.153054

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of Hydrogen Isotope Absorption and Emission of Neutron-Irradiated Tungsten2020

    • Author(s)
      TOYAMA Takeshi、YAJIMA Miyuki、OHNO Noriyasu、KUWABARA Tatsuya、ALIMOV Vladimir Kh.、HATANO Yuji
    • Journal Title

      Plasma and Fusion Research

      Volume: 15 Issue: 0 Pages: 1505081-1505081

    • DOI

      10.1585/pfr.15.1505081

    • NAID

      130007948958

    • ISSN
      1880-6821
    • Year and Date
      2020-11-19
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Deuterium release from deuterium plasma-exposed neutron-irradiated and non-neutron-irradiated tungsten samples during annealing2020

    • Author(s)
      Alimov V.Kh.、Hatano Y.、Kuwabara T.、Toyama T.、Someya Y.、Spitsyn A.V.
    • Journal Title

      Nuclear Fusion

      Volume: 60 Issue: 9 Pages: 096025-096025

    • DOI

      10.1088/1741-4326/aba337

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In-situ WB-STEM observation of dislocation loop behavior in reactor pressure vessel steel during post-irradiation annealing2020

    • Author(s)
      Du Yufeng、Yoshida Kenta、Shimada Yusuke、Toyama Takeshi、Inoue Koji、Arakawa Kazuto、Suzudo Tomoaki、Milan Konstantinovic J.、Gerard Robert、Ohnuki Somei、Nagai Yasuyoshi
    • Journal Title

      Materialia

      Volume: 12 Pages: 100778-100778

    • DOI

      10.1016/j.mtla.2020.100778

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atomistic modeling of hardening in spinodally-decomposed Fe-Cr binary alloys2020

    • Author(s)
      Suzudo Tomoaki、Takamizawa Hisashi、Nishiyama Yutaka、Caro Alfredo、Toyama Takeshi、Nagai Yasuyoshi
    • Journal Title

      Journal of Nuclear Materials

      Volume: 540 Pages: 152306-152306

    • DOI

      10.1016/j.jnucmat.2020.152306

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 電子線照射されたタングステン中の空孔形成に対するレニウム添加効果2024

    • Author(s)
      外山 健, Zhang Zhaokuan, 井上 耕治, 永井 康介, 木野村 淳, 波多野 雄治
    • Organizer
      日本金属学会 第174回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] BR2を利用した高温・高精度中性子照射キャプセルの開発:キャプセル封止方法の改良2024

    • Author(s)
      外山 健, 鈴木 克弥, 山崎 正徳, 永井 康介
    • Organizer
      日本金属学会 第174回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Cu-Cr合金の硬度およびミクロ組織の熱時効挙動に対するZr添加効果2023

    • Author(s)
      外山 健, 藏野 功, 井上 耕治, 永井 康介, J. Hughes, E. Jimenez-Melero, UK Atomic Energy Authority, M. Gorley
    • Organizer
      日本金属学会 第173回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] BR2を利用した高温・高精度中性子照射キャプセルの開発2023

    • Author(s)
      外山 健, 鈴木 克弥, 山崎 正徳, 永井 康介
    • Organizer
      日本金属学会 第173回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Irradiation Effect on Copper Diffusivity and Solubility in Iron Studied by Three-dimensional Atom Probe2023

    • Author(s)
      T. Toyama;T. Yoshiie;C. Zhao;K. Inoue;Y. Nagai
    • Organizer
      THERMEC'2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Cu-Cr-Zr合金の480 ℃熱時効初期過程における硬度およびCr析出物の変化2023

    • Author(s)
      外山 健,J. Hughes,M. Gorley,井上 耕治,永井 康介,E. Jimenez-Melero
    • Organizer
      日本金属学会第172回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] BR2を利用した高温・高精度中性子照射計画2023

    • Author(s)
      外山 健,鈴木 克弥,山崎 正徳,永井 康介
    • Organizer
      日本金属学会第172回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 東北大金研大洗における全国大学共同利用中性子照射について2023

    • Author(s)
      外山健
    • Organizer
      第2回A-FNS研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Ultra-fine defects in RPV surveillance test specimens studied by temperature dependency of positron annihilation2022

    • Author(s)
      T. Toyama,K.Inoue,M. Shimodaira,K. Yoshida,Y. Nagai,M. J. Konstantinovic,R. Gerard,M. De Smet
    • Organizer
      IGRDM-21
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 常陽で重照射されたODS鋼中の酸化物粒子の3D-AP観察2022

    • Author(s)
      外山健,柴原理恵,Du Yufen,井上耕治,永井康介,矢野康英,大塚智史,光原昌寿,中島英治,大沼正人
    • Organizer
      日本金属学会第171回講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 鉄中の溶質原子の拡散・析出に対する照射効果2022

    • Author(s)
      外山健
    • Organizer
      日本放射化学会第66回討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Doping Effect of Re, Mo, Ta on irradiation-induced defects in W2022

    • Author(s)
      T.Toyama,K. Inoue,Y. Hatano,A. Yabuuchi,A. Kinomura,Y. Oya,T. Suzudo,Y. Nagai
    • Organizer
      19th International Conference on Positron Annihilation
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] BR2共同利用照射における高温(>500℃)照射2022

    • Author(s)
      外山健,鈴木克弥,山崎正徳,永井康介
    • Organizer
      材料照射研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 陽電子消滅法で調べた電子線照射W合金中の空孔型欠陥形成に対するRe添加効果2021

    • Author(s)
      外山健, Zhao Can, 井上 耕治, 永井 康介, 波多野 雄治, 薮内 敦, 木野村 淳, 鈴土 知明
    • Organizer
      日本金属学会第168回講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電子線照射されたW-X合金(X=Mo, Ta, Re)中の照射欠陥2020

    • Author(s)
      外山健, Zhao Can, 井上耕治, 永井康介, 波多野雄治, 薮内敦, 木野村淳
    • Organizer
      日本金属学会第167回講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電子線照射されたW合金中の照射欠陥2020

    • Author(s)
      外山健, Zhao Can, 井上耕治, 永井康介, 波多野雄治, 薮内敦, 木野村淳
    • Organizer
      京都大学複合原子力科学研究所専門研究会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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