Effective and precise investigation on irradiation degradation and its evaluation in polycrystalline materials using a combinatorial approach

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289361
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Iwate University
• Principal Investigator: KAMADA Yasuhiro 岩手大学, 理工学部, 教授 (00294025)
• Co-Investigator(Kenkyū-buntansha): 渡辺 英雄 九州大学, 応用力学研究所, 准教授 (90212323) ; 大島 永康 国立研究開発法人産業技術総合研究所, その他部局等, 研究員 (00391889) ; 小林 悟 岩手大学, 工学部, 准教授 (30396410) ; 村上 武 岩手大学, 工学部, その他 (60466513)
• Co-Investigator(Renkei-kenkyūsha): TSUJI Nobuhiro 京都大学, 工学研究科, 教授 (30263213) ; TAKANASHI Koki 東北大学, 金属材料研究所, 教授 (00187981) ; MITANI Seiji 独立行政法人物質・材料研究機構, スピントロニクスグループ, グループリーダー (20250813) ; TANIGAWA Hiroyasu 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, グループリーダー (50354668)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 照射損傷 / 非破壊評価 / 磁気特性

Outline of Final Research Achievements

Iron based alloys are important structural materials in fission and fusion reactor components. Since thermal and radiation exposure cause materials embrittlement, it is necessary to clarify the degradation mechanism and to develop its nondestructive evaluation (NDE) techniques for the safe and reliable operation of power plants. In this study, (1) magnetic properties of ion-irradiated iron-based thin films, electromagnetic properties and microstructures of polycrystalline bulk specimens of (2) neutron-irradiated & thermally-aged Fe-Cr binary alloys, (3) cladded RPV steels, thermally-aged (4) F82H steels and (5) duplex stainless steels were investigated effectively. We clarified the correlation mechanisms between hardness and electromagnetic properties, and demonstrated feasibilities of their NDE techniques.

Free Research Field

工学