蠕变疲劳裂纹扩展对汽轮机转子寿命的影响  

Influence of Creep-fatigue Crack Propagation on Life of Steam Turbine Rotor

作　　者：代海燕[1] 田宇[1] 王丽艳[1] 李海霞[1] Dai Haiyan;Tian Yu;Wang Liyan;Li Haixia

机构地区：[1]哈尔滨汽轮机厂有限责任公司,黑龙江150046

出　　处：《大型铸锻件》2021年第3期50-51,54,共3页Heavy Casting and Forging

摘　　要：依据汽轮机转子安全性评价准则和蠕变疲劳裂纹扩展引起寿命损耗的计算模型,实际计算了含缺陷的超临界汽轮机转子的蠕变疲劳裂纹扩展寿命损耗,分析了缺陷当量和工作应力对转子寿命损耗的影响大小,对汽轮机转子寿命评估工作方面有一定的理论指导意义。According to the safety evaluation criteria of steam turbine rotors and the calculation model of life loss caused by creep-fatigue crack propagation,life loss of supercritical steam turbine rotors with defects caused by the creep-fatigue crack propagation has been actually calculated,and the effect of defect equivalent and working stress on rotor life loss has been analyzed.It has certain theoretical guiding significance for the evaluation of steam turbine rotor life.

关 键 词：蠕变疲劳裂纹扩展 汽轮机转子 安全性评价 

分 类 号：TG113.255[金属学及工艺—物理冶金]