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Development of the innovative tungsten material by investigation of the dominant factors of long-term reliability

Research Project

Project/Area Number 15H06030
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Nuclear fusion studies
Research InstitutionTohoku University

Principal Investigator

Fukuda Makoto  東北大学, 工学研究科, 助教 (70757666)

Project Period (FY) 2015-08-28 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsタングステン / タングステン合金 / 核融合炉 / ダイバータ / プラズマ対向壁 / 長期信頼性支配因子 / 再結晶脆化 / 照射脆化
Outline of Final Research Achievements

The objective of this work is to understand the dominant factors of long-term reliability of tungsten in fusion reactor operation conditions such as high heat load and particle irradiation and develop the tungsten alloys with higher reliability for future fusion reactor systems such as DEMO. The results of this work showed that the dominant factor of the reliability of W is heat load during short-term operation. With increasing operational time, particle irradiation will become dominant factor of reliability. In addition, it was found that the effective method to suppress grain structure and mechanical property changes and improve reliability of W under heat load and particle irradiation condition.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • Research Products

    (9 results)

All 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Analysis of the temperature and thermal stress in pure tungsten monoblock during heat loading and the influence of alloying and dispersion strengthening on these responses2016

    • Author(s)
      Makoto Fukuda, Shuhei Nogami, Wenhai Guan, Akira Hasegawa, Takeo Muroga
    • Journal Title

      Fusion Engineering and Design

      Volume: 107 Pages: 44-50

    • DOI

      10.1016/j.fusengdes.2016.04.013

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of self-ion irradiation on hardening and microstructure of tungsten2016

    • Author(s)
      T.Hwang, M.Fukuda, S.Nogami, A.Hasegawa, H.Usami, K.Yabuuchi, K.Ozawa, H.Tanigawa
    • Journal Title

      Nuclear Materials and Energy

      Volume: 9 Pages: 430-435

    • DOI

      10.1016/j.nme.2016.06.005

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] タングステンおよびタングステン合金における損傷の組織発達における中性子・イオン照射相関に関する研究2017

    • Author(s)
      長谷川 晃、福田 誠、黄 泰現、野上 修平
    • Organizer
      日本原子力学会2017年春の年会
    • Place of Presentation
      神奈川県, 東海大学 湘南キャンパス
    • Year and Date
      2017-03-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] "Development of Tungsten Alloys with Improved Resistance against Irradiation and Recrystallization Embrittlement for Fusion Application"2016

    • Author(s)
      Makoto Fukuda, Akira Hasegawa and Shuhei Nogami
    • Organizer
      2016 MRS Fall meeting and exhibit
    • Place of Presentation
      Boston, MA, USA
    • Year and Date
      2016-11-27
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 純タングステン及びタングステン合金の熱履歴による引張特性変化2016

    • Author(s)
      長谷川晃, 梶島侑馬, 福田誠, 土田航平, 野上修平
    • Organizer
      日本原子力学会2016年秋の大会
    • Place of Presentation
      福岡県, 久留米シティプラザ
    • Year and Date
      2016-09-07
    • Related Report
      2016 Annual Research Report
  • [Presentation] 重イオン照射による純タングステン及びタングステン合金の照射影響評価2016

    • Author(s)
      黄泰現, 福田誠, 大野悟史, 田畠恒紀, 長谷川晃, 野上修平, 小沢和巳, 谷川博康
    • Organizer
      第11回核融合エネルギー連合講演会
    • Place of Presentation
      福岡県, 九州大学 伊都キャンパス椎木講堂
    • Year and Date
      2016-07-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] レニウム及びカリウムドープしたタングステン材料の再結晶による結晶粒組織及び引張特性変化2016

    • Author(s)
      福田 誠, 土田 航平, 梶島 侑馬, 長谷川 晃, 野上 修平
    • Organizer
      日本原子力学会「2016年春の年会」
    • Place of Presentation
      東北大学川内キャンパス(宮城県 仙台市)
    • Year and Date
      2016-03-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] 重イオン照射したタングステンの挙動 (1)レニウム添加したタングステンの重イオン照射による硬化挙動2016

    • Author(s)
      田畠 恒紀, 黄 泰現, 福田 誠, 長谷川 晃, 野上 修平, 谷川 博康, 小沢 和巳
    • Organizer
      日本原子力学会「2016年春の年会」
    • Place of Presentation
      東北大学川内キャンパス(宮城県 仙台市)
    • Year and Date
      2016-03-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] 重イオン照射したタングステンの挙動 (2)タングステンの照射硬化に及ぼすレニウム及びカリウムドープの複合影響2016

    • Author(s)
      黄 泰現, 大野 悟史, 田畠 恒紀, 福田 誠, 長谷川 晃, 野上 修平, 谷川 博康, 小沢 和巳
    • Organizer
      日本原子力学会「2016年春の年会」
    • Place of Presentation
      東北大学川内キャンパス(宮城県 仙台市)
    • Year and Date
      2016-03-26
    • Related Report
      2015 Annual Research Report

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Published: 2015-08-26   Modified: 2018-03-22  

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