Journal of Welding and Joining
- 제5권2호
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- Pages.9-16
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- 1987
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- 2466-2232(pISSN)
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- 2466-2100(eISSN)
Cr-Mo鋼 熔接熱影響部의 破壞靭性과 熔接入熱量에 관한 硏究 II
초록
Post weld heat treatment (PWHT) is carried out to increase the fracture toughness in heat affected zone(HAZ) and remove the residual stress. There occur some problems such as toughness decreement and stress relief cracking(SRC) in the coarse grained HAZ subjected to the effect of tempering treatment. Especially, embitterment of structure directly relates to the mode of fracture and is appeared as the difference of fracture surface, that is, grain boundary failure. Therefore, in this paper, PWHT was carried out under the stress of 0, 10, 20 and
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