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Development of a microstructure-thermal history database for accident process estimation to realise early decommissioning of the Fukushima nuclear power plant.

Research Project

Project/Area Number 18K04997
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionHachinohe National College of Technology

Principal Investigator

Furuya Kazuyuki  八戸工業高等専門学校, その他部局等, 教授 (70354660)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords高エントロピー合金 / 耐照射性 / 照射脆化 / 弾き出し損傷 / ナノ硬さ / 低放射化 / 核融合炉 / 小型モジュール炉 / 炭化ホウ素 / ハイエントロピー合金 / 照射損傷 / 照射効果 / 核燃料デブリ / ヘリウム注入 / 転位ループ / キャビティー / 破壊靭性 / 熱履歴 / イオン照射 / 微細組織
Outline of Final Research Achievements

n the next generation of nuclear reactors, higher temperatures will increase energy efficiency, especially in ferrous materials. Under irradiation, ferrous materials with an fcc crystal structure are known to have reduced creep properties and a significantly reduced lifetime. In addition, Co, Ni and other materials are known to have high induced radioactivity. Therefore, a new high-entropy alloy (Fe-20Mn-15Cr-10V-10Al-2.5C) with a bcc crystal structure was produced and characterised for the first time. The present study shows that such an elemental system has previously unknown properties, i.e. hardness exceeding that of pure tungsten and irradiation resistance higher than previously studied fusion reactor materials and various high-entropy alloys.

Academic Significance and Societal Importance of the Research Achievements

特に高温での高い耐放射線性と耐食性は、基礎科学や応用に供される高エネルギー加速器を用いた施設で扱われる装置にも求められ、さらなる高出力条件が必要とされ、このような高エネルギー負荷に耐える装置や材料が不可欠である。次世代原子力システム(核融合炉、高速炉、新型核分裂炉)、高エネルギー加速器ターゲットシステム、航空機や自動車の磁気モーターなど、より高性能(強度、耐熱性など)で低放射化特性を持つ革新的な材料やデバイスが求められている中で、本研究は、優れた高温強度や耐食性を有するだけで無く、放射化し難く、照射損傷にも強い新しい合金の創製を目指しており、本合金がもたらす革新的な波及効果は計り知れない。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022

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

  • [Journal Article] Microstructures and hardness of BCC phase iron-based high entropy alloy Fe-Mn-Cr-V-Al-C2024

    • Author(s)
      Wakai Eiichi、Noto Hiroyuki、Shibayama Tamaki、Furuya Kazuyuki、Ando Masami、Kamada Takaharu、Ishida Taku、Makimura Shunsuke
    • Journal Title

      Materials Characterization

      Volume: 211 Pages: 113881-113881

    • DOI

      10.1016/j.matchar.2024.113881

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent improvement and evaluation of radiation resistance and magnetic properties of high entropy alloys and their applications2023

    • Author(s)
      Wakai Eiichi、Noto Hiroyuki、Shibayama Tamaki、Furuya Kazuyuki、Wakui Takashi、Ando Masami、Makimura Shunsuke、Ishida Taku
    • Journal Title

      Science Talks

      Volume: 8 Pages: 100278-100278

    • DOI

      10.1016/j.sctalk.2023.100278

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 高放射線場で使用を目指すハイエントロピー合金の材料評価法と開発2024

    • Author(s)
      若井栄一、柴山環樹、能登裕之、古谷一幸、石田卓、佐藤紘一、岩元洋介、安堂正己、涌井隆、鎌田貴晴、牧村俊助
    • Organizer
      東海・重イオン科学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 体心立方結晶構造を主に持つ鉄系、チタン系、タングステン系ハイエントロピー合金の特性評価(照射効果含む)2024

    • Author(s)
      若井栄一、能登裕之、柴山環樹、岩元洋介、石田卓、佐藤紘一、薮内敦、義家敏正、高橋俊晴、小林康浩、涌井隆、古谷一幸、鎌田貴晴、安堂正己、猿田晃一、牧村俊助
    • Organizer
      日本金属学会2024年春期講演大会シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] BCC ベース結晶構造を持つハイエントロピー合金の特性評価2023

    • Author(s)
      若井栄一、柴山環樹、能登裕之、古谷一幸、岩元洋介、涌井隆、牧村俊助、石田卓、安堂正己、佐藤紘一、高橋俊晴
    • Organizer
      日本原子力学会2023年秋の大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Iron-Based High Entropy Alloy2023

    • Author(s)
      Eiichi Wakai, Hiroyuki Noto, Kazuyuki Furuya, Tamaki Shibayama, Masami Ando, Takaharu Kamada, Takashi Wakui, Shunsuke Makimura, Taku Ishida, Sho Kano
    • Organizer
      21th International conference on Fusion Reactor Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Titanium-Based High Entropy Alloys2023

    • Author(s)
      Eiichi Wakai, Hiroyuki Noto, Shunsuke Makimura, Taku Ishida, Kazuyuki Furuya, Tamaki Shibayama
    • Organizer
      21th International conference on Fusion Reactor Material
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-entropy alloys and the properties2023

    • Author(s)
      Eiichi Wakai, Sho Kano, Taku Ishida, Shunsuke Makimura, Tamaki Shibayama, Koichi Sato, H. Noto, Kazuyuki Furuya
    • Organizer
      Michigan University’s Materials Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Iron-Based High Entropy Alloys2023

    • Author(s)
      Eiichi Wakai, Hiroyuki Noto, Kazuyuki Furuya, Masami Ando, Takashi Wakui, Shunsuke Makimura, Taku Ishida, Tamaki Shibayama, Takaharu Kamada
    • Organizer
      15th International Workshop on Spallation Materials Technology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fabrication and Characterization of iron-based and tungsten based high-entropy alloys2022

    • Author(s)
      E. Wakai, H. Noto, T. Shibayama, Y. Iwamoto, K. Sato, T. Wakui, K. Furuya, et al.
    • Organizer
      The Nuclear Materials Conference 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2025-01-30  

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