To perform a more realistic integrity evaluation for the bi-material welded part of NPP (nuclear power plant) components, it is necessary to evaluate the microstructure and residual stress considering the actual welding process such as multi-pass welding and PWHT (post weld heat treatment). This paper proposes an integrated assessment methodology systematically developed for microstructure and residual stress on welds utilizing thermodynamics, diffusion theory, and finite element method and validation experiments. Also, the metallurgical microstructure and residual stress of the bi-material welds are evaluated by application of this systematic methodology.
- Pressure Vessels and Piping Division
Evaluation of Microstructure and Residual Stress on Bi-Material Welded Part
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Kim, J, Lee, S, & Jin, T. "Evaluation of Microstructure and Residual Stress on Bi-Material Welded Part." Proceedings of the ASME 2002 Pressure Vessels and Piping Conference. Computational Weld Mechanics, Constraint, and Weld Fracture. Vancouver, BC, Canada. August 5–9, 2002. pp. 27-32. ASME. https://doi.org/10.1115/PVP2002-1102
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