Abstract
Recently, the stress corrosion cracking (SCC) of internal cores and/or recirculation pipes of low-carbon austenitic stainless steel has become actualised. The SCC is considered to occur and progress near the welding zone because of the tensile residual stress due to welding. In the present work, the thermo-elastic-plastic analysis of the residual stress was performed in order to clarify the distribution of residual stress in the steady and unsteady welding regions by circumferential welding. The target was a butt-welded joint of SUS316L-pipes. The residual stress has been calculated using a three dimensional model and the results have been compared and discussed in detail.
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