Journal of Welding and Joining
- 제5권1호
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- Pages.73-80
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- 1987
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- 2466-2232(pISSN)
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- 2466-2100(eISSN)
Cr-Mo강 용접후 열처리재의 피로파괴에 관한 연구
초록
During PWHT, it is well known that residual stress in weld HAZ is one of the reasons for PWHT embitterment. In case of static loading, it was experimentally found that fracture toughness of weld HAZ was dependant upon PWHT conditions. However, the effects of PWHT on fatigue behavior are not clearly verified. Therefore, in this paper, the effects of heating rate PWHT conditions and residual stress simulated in weld HAZ of Cr-Mo steel on fatigue crack propagation behavior were evaluated by fatigue Testing and SEM observation. The obtained results are summarized as follows; 1. Applied stress(