Fracture behavior of Ni-base weld metals used for boiling water reactor (BWR) was investigated. The elastic-plastic fracture toughness (JIc) tests were conducted for Alloys 182 and 82 in room temperature (R.T.) and 300°C air using 2TCT specimen. It was found that the ductile crack growth resistance of Alloy 82 is higher than that of Alloy 182, and also the ductile crack growth resistances at 300°C are higher than those at R.T. for both Alloys 182 and 82. The fracture loads of CT specimen were predicted using existing limit load equations. The estimated limit load Pc using flow stress which is defined as the average of 0.2% proof stress and tensile strength coincided well with the experimental maximum load Pmax. It was confirmed that the conservative limit load estimation is possible when using 2.7Sm as the effective yield stress in the limit load equation.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4364-2
PROCEEDINGS PAPER
Evaluation of Fracture Characteristics of Ni-Base Weld Metal for BWR Components
Masao Itatani,
Masao Itatani
Toshiba Corporation, Yokohama, Japan
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Toshiyuki Saito,
Toshiyuki Saito
Toshiba Corporation, Yokohama, Japan
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Takahiro Hayashi,
Takahiro Hayashi
Toshiba Corporation, Yokohama, Japan
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Chihiro Narazaki,
Chihiro Narazaki
Toshiba Corporation, Yokohama, Japan
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Kazuo Ogawa,
Kazuo Ogawa
Japan Nuclear Energy Safety Organization, Tokyo, Japan
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Masaaki Kikuchi
Masaaki Kikuchi
Japan Nuclear Energy Safety Organization, Tokyo, Japan
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Masao Itatani
Toshiba Corporation, Yokohama, Japan
Toshiyuki Saito
Toshiba Corporation, Yokohama, Japan
Takahiro Hayashi
Toshiba Corporation, Yokohama, Japan
Chihiro Narazaki
Toshiba Corporation, Yokohama, Japan
Kazuo Ogawa
Japan Nuclear Energy Safety Organization, Tokyo, Japan
Masaaki Kikuchi
Japan Nuclear Energy Safety Organization, Tokyo, Japan
Paper No:
PVP2009-77720, pp. 419-427; 9 pages
Published Online:
July 9, 2010
Citation
Itatani, M, Saito, T, Hayashi, T, Narazaki, C, Ogawa, K, & Kikuchi, M. "Evaluation of Fracture Characteristics of Ni-Base Weld Metal for BWR Components." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 1: Codes and Standards. Prague, Czech Republic. July 26–30, 2009. pp. 419-427. ASME. https://doi.org/10.1115/PVP2009-77720
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