Development of miniature fracture toughness test technique for thin martensitic steel wrapper tube of fast reactor

Tanno, Takashi ; Yano, Yasuhide ; Oka, Hiroshi* ; Kurishita, Hiroaki*

Miniature 3 point bend test was applied to evaluate fracture toughness of ferritic/martensitic steel (PNC-FMS) for fast reactor subassembly wrapper tube. In this work, it was clarified that pre-crack length and open angle of side groove are important to obtain the certain and conservative fracture toughness with miniatured specimen. Finally, the fracture toughness value J $_{Q}$ of PNC-FMS could be obtained with miniaturized specimen which can be applied to wrapper tube thickness.

Language	:	English
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Meeting title	:	GIMRT Joint International Symposium on Radiation Effects in Materials and Actinide Science (GIMRT-REMAS 2020)
Held date	:	2020/09
Location (city)	:	Sendai (online)
Location (country)	:	Japan
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Keywords	:	破壊靭性試験; PNC-FMS; ミニチュア試験
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Registration No. : BB20200513
JAEA Abstracts No. :
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