付正鸿,陈辉,苟国庆,肖军,邱绍宇,刘锦云,查五生

• 1:西南交通大学材料科学与工程学院
• 2:中国核动力研究设计院反应堆燃料及材料重点实验室
• 3:西华大学材料科学与工程学院

摘要(Abstract)：

通过研究载荷频率变化对690(TT)合金在含饱和氧的模拟压水堆一回路水环境中腐蚀疲劳裂纹扩展行为的影响,得到以下结论:随着载荷频率的降低,裂纹扩展速率(CGR)和环境影响因子(F_(en))均随之增大;裂纹扩展路径为穿晶型,在频率较低或应力比R较大时出现较多的支裂纹;断口呈典型的腐蚀疲劳断裂特征,裂纹在三维空间中扩展,可观察较多的微裂纹。

关键词(KeyWords)： 690(TT)合金;载荷频率;腐蚀疲劳裂纹扩展;环境影响因子

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 付正鸿,陈辉,苟国庆,肖军,邱绍宇,刘锦云,查五生

DOI: 10.13289/j.issn.1009-6264.2016.02.007

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