Weld residual stress (WRS) in dissimilar metal welds (DMWs) has been identified as an important driver for primary water stress corrosion cracking, which is observed in nuclear power plant safety-related components. In this work, a newly developed dynamic strain hardening rule is implemented in finite element (FE) thermal-mechanical model to simulate the residual stress distribution in a dissimilar metal weld studied in a recent NRC/EPRI Round Robin study. This new dynamic strain hardening constitutive rule takes into account the effect of dynamic recovery and recrystallization at elevated temperatures on the strain hardening behavior during welding. Weld residual stresses calculated using the new dynamic strain hardening rule are compared to those with the conventional strain hardening ones (isotropic and kinematic), as well as the experimental measurement data. The new dynamic strain hardening rule results in improvements in WRS prediction.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5699-4
PROCEEDINGS PAPER
Effect of Strain Hardening Constitutive Relations on Weld Residual Stress Simulation of Dissimilar Metal Weld
Jian Chen,
Jian Chen
Oak Ridge National Laboratory, Oak Ridge, TN
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Gaoqiang Chen,
Gaoqiang Chen
Oak Ridge National Laboratory, Oak Ridge, TN
Tsinghua University, Beijing, China
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Xinghua Yu,
Xinghua Yu
Oak Ridge National Laboratory, Oak Ridge, TN
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Zhili Feng,
Zhili Feng
Oak Ridge National Laboratory, Oak Ridge, TN
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Paul Crooker
Paul Crooker
Electric Power Research Institute, Palo Alto, CA
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Jian Chen
Oak Ridge National Laboratory, Oak Ridge, TN
Gaoqiang Chen
Oak Ridge National Laboratory, Oak Ridge, TN
Tsinghua University, Beijing, China
Xinghua Yu
Oak Ridge National Laboratory, Oak Ridge, TN
Zhili Feng
Oak Ridge National Laboratory, Oak Ridge, TN
Paul Crooker
Electric Power Research Institute, Palo Alto, CA
Paper No:
PVP2015-45748, V06AT06A065; 5 pages
Published Online:
November 19, 2015
Citation
Chen, J, Chen, G, Yu, X, Feng, Z, & Crooker, P. "Effect of Strain Hardening Constitutive Relations on Weld Residual Stress Simulation of Dissimilar Metal Weld." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Boston, Massachusetts, USA. July 19–23, 2015. V06AT06A065. ASME. https://doi.org/10.1115/PVP2015-45748
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