Fracture toughness evaluation of neutron-irradiated reactor pressure vessel steel using miniature-C(T) specimens

Ha, Yoosung ; Tobita, Toru; Takamizawa, Hisashi ; Nishiyama, Yutaka

The applicability of miniature-C(T) (Mini-C(T)) specimens to fracture toughness evaluation was investigated for neutron-irradiated reactor pressure vessel (RPV) steel. $T_{o}$ value determined from irradiated Mini-C(T) specimens was in good agreement with that determined from the irradiated pre-cracked Charpy-type (PCCv) specimens. Also, the scatter of the 1T-equivalent fracture toughness values obtained from the irradiated Mini-C(T) specimens was not significantly different from that obtained from the irradiated PCCv. $T_{o}$ values determined from Mini-C(T) specimens agreed very well with the correlation between Charpy 41J transition temperature and $T_{o}$ of commercially manufactured RPV steels.

Language	:	English
Journal	:	Proceedings of 2017 ASME Pressure Vessels and Piping Conference (PVP 2017) (CD-ROM)
Volume	:
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Pages	:	5 Pages
Publication Year/Month	:	2017/07
Meeting title	:	2017 ASME Pressure Vessels and Piping Conference (PVP 2017)
Held date	:	2017/07
Location (city)	:	Waikoloa
Location (country)	:	U.S.A.
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Keywords	:	no keyword
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Article of JAEA R&D Review	:
Cooperating Institute	:	原子力規制委員会原子力規制庁

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Registration No. : BB20170525
JAEA Abstracts No. : 45001047
Paper Submission No. : 19285

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