Fracture failure analysis of steam generator channel heads with high carbon macro-segregation
作者： Kaikai Shi , Yixiong Zhang , Yu Yang , Bin Zheng , Hai Xie
DOI: 10.1016/J.ENGFAILANAL.2020.104540
关键词:
摘要: Abstract Fast fracture evaluation strategy is receiving earnest concern in the structural integrity analysis of nuclear equipment which subjected to effects neutron irradiation during operation. The increment ductile and brittle transition temperature mainly due increases risk failure. In addition irradiation, high carbon macro-segregation low-alloy steels also failure as positive will lead increasing steels. present study, a conservative relationship between content developed based on data used highest region SG channel head. A special defect size assumed considering capability non-destructive technology analysis. Results show that ratio calculated stress intensity factor according safety coefficient suggested by ASME design code critical less than one, indicates safe no for steam generator head macro-segregation.
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