Corrosion Fatigue Cracking Behavior of Inconel 690（TT） in Secondary Water of Pressurized Water Reactors

Xiao Jun; Chen Luyao; Fu Zhenghong; Qiu Shaoyu; Chen Yong; Lin Zhenxia

doi:10.13832/j.jnpe.2015.04.0083

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Xiao Jun, Chen Luyao, Fu Zhenghong, Qiu Shaoyu, Chen Yong, Lin Zhenxia. Corrosion Fatigue Cracking Behavior of Inconel 690（TT） in Secondary Water of Pressurized Water Reactors[J]. Nuclear Power Engineering, 2015, 36(4): 83-85. doi: 10.13832/j.jnpe.2015.04.0083

Citation:

Xiao Jun, Chen Luyao, Fu Zhenghong, Qiu Shaoyu, Chen Yong, Lin Zhenxia. Corrosion Fatigue Cracking Behavior of Inconel 690（TT） in Secondary Water of Pressurized Water Reactors[J]. Nuclear Power Engineering, 2015, 36(4): 83-85. doi: 10.13832/j.jnpe.2015.04.0083

Citation:

Xiao Jun, Chen Luyao, Fu Zhenghong, Qiu Shaoyu, Chen Yong, Lin Zhenxia. Corrosion Fatigue Cracking Behavior of Inconel 690（TT） in Secondary Water of Pressurized Water Reactors[J]. Nuclear Power Engineering, 2015, 36(4): 83-85. doi: 10.13832/j.jnpe.2015.04.0083

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Corrosion Fatigue Cracking Behavior of Inconel 690（TT） in Secondary Water of Pressurized Water Reactors

doi: 10.13832/j.jnpe.2015.04.0083

1. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China;
2. School of Material Science and Engineering, Xihua University, Chengdu, 610039, China

Received Date: 2014-10-22
Rev Recd Date: 2015-01-23

Available Online: 2025-02-15

Abstract

Abstract

Inconel 690（TT） is one of the key materials for tubes of steam generators for pressurized water reactors, where it is susceptible to corrosion fatigue cracking. In this paper, the corrosion fatigue cracking behavior of Inconel 690（TT） was investigated under small scale yielding conditions, in the simulated secondary water of pressurized water reactor. It was observed that the fatigue crack growth rate was accelerated by a maximum factor up to 3 in the simulated secondary water, comparing to that in room temperature air. In addition, it was found that the accelerating effect was influenced by out-of-plane cracking of corrosion fatigue cracks and also correlated with stress intensity factor range, maximum stress intensity factor and stress ratio.
- Inconel 690（TT） metal,
- Pressurized water reactor,
- Small scale yielding,
- Corrosion fatigue