Numerical simulation of residual stress distribution generated by machining and the effect on crack growth

Ihara, Ryohei*; Katsuyama, Jinya  ; Onizawa, Kunio ; Hashimoto, Tadafumi*; Mikami, Yoshiki*; Mochizuki, Masahito*

Stress Corrosion Cracking (SCC) has been observed near the weld zone of the primary loop recirculation pipes made of SUS316L. For the evaluation of initiation and propagation of SCC for non-sensitization material, residual stress distribution generated by surface-machining is the most important factors. In this study, residual stress distributions generated are evaluated by varying cutting speed, and crack growth analysis are performed using evaluated residual stress distributions. As a result, crack growth highly depends on residual stress distributions by surface-machining.