Two primary coolant pipes were narrow-gap multipass circumferentially butt welded by shielded metal arc welding (SMAW) method and then subjected to micro-hardness tests to distinguish the base metal (BM), heat affected zones (HAZs), fusion zones (FZs) and weld metal (WM). Subsequently, uniaxial tensile tests were performed to investigate the tensile properties on each area in SMAW welded joints. The fracture toughness has been investigated at the above four different locations of the SMAW welded joints. Then the 0.2mm offset line method and the stretch zone width method have been both employed to determine the critical initial fracture toughness Ji. The results indicate that the fusion zones (FZs) have the worst fracture toughness compared with other locations over weld joints.
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ASME 2018 Pressure Vessels and Piping Conference
July 15–20, 2018
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5167-8
PROCEEDINGS PAPER
A Study on the Fracture Toughness at Different Locations of SMAW Welded Joint of Primary Coolant Piping
Weiwei Yu,
Weiwei Yu
Suzhou Nuclear Power Research Institute, Suzhou, China
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Minyu Fan,
Minyu Fan
Suzhou Nuclear Power Research Institute, Suzhou, China
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Jinhua Shi,
Jinhua Shi
Suzhou Nuclear Power Research Institute, Suzhou, China
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Fei Xue,
Fei Xue
Suzhou Nuclear Power Research Institute, Suzhou, China
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Mingya Chen,
Mingya Chen
Suzhou Nuclear Power Research Institute, Suzhou, China
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Xu Chen
Xu Chen
Tianjin University, Tianjin, China
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Weiwei Yu
Suzhou Nuclear Power Research Institute, Suzhou, China
Minyu Fan
Suzhou Nuclear Power Research Institute, Suzhou, China
Jinhua Shi
Suzhou Nuclear Power Research Institute, Suzhou, China
Fei Xue
Suzhou Nuclear Power Research Institute, Suzhou, China
Mingya Chen
Suzhou Nuclear Power Research Institute, Suzhou, China
Xu Chen
Tianjin University, Tianjin, China
Paper No:
PVP2018-84422, V06AT06A033; 7 pages
Published Online:
October 26, 2018
Citation
Yu, W, Fan, M, Shi, J, Xue, F, Chen, M, & Chen, X. "A Study on the Fracture Toughness at Different Locations of SMAW Welded Joint of Primary Coolant Piping." Proceedings of the ASME 2018 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Prague, Czech Republic. July 15–20, 2018. V06AT06A033. ASME. https://doi.org/10.1115/PVP2018-84422
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