Inconel690(TT)合金裂纹尖端小范围屈服时的腐蚀疲劳裂纹扩展行为研究  

Corrosion Fatigue Cracking of Inconel 690(TT) with Crack-tip Area under Small Scale Yielding

作　　者：肖军[1] 陈璐瑶[1] 付正鸿[2] 邱绍宇[1] 陈勇[1] 林震霞[1] 

机构地区：[1]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610041 [2]西华大学材料科学与工程学院,成都610039

出　　处：《核动力工程》2015年第1期41-45,共5页Nuclear Power Engineering

摘　　要：对Inconel 690(TT)合金腐蚀疲劳裂纹尖端塑性区微观结构进行观察,并研究裂纹尖端塑性区及载荷比对模拟压水堆环境下的裂纹扩展行为的影响。裂纹尖端小范围屈服时,模拟压水堆环境对裂纹扩展速率有3倍左右的加速作用。。Corrosion fatigue crack-tip plastic zone of Inconel 690（TT） was investigated, and the effects of crack-tip plastic zone and load ratio on the corrosion fatigue cracking in the simulated pressurized water reactor environment were studied. The accelerating effects of the simulated pressurized water reactor environment on fatigue crack growth rates under small scale yielding was as large as 3.

关 键 词：INCONEL 690(TT)合金 裂纹尖端塑性区 载荷比 腐蚀疲劳裂纹扩展 

分 类 号：TB31[一般工业技术—材料科学与工程]