Investigation on Corrosion Fatigue Behavior of 316LN SS under High Temperature Water Environment

被引：0
|
作者：
Su H. [1 ]
Chen K. [1 ]
Zhang L. [1 ]
Dang Y. [2 ]
Chen L. [2 ]
机构：
[1] Corrosion Laboratory for Nuclear Power Materials, School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai
[2] Institute of Nuclear Fuel Elements and Materials, Nuclear Power Institute of China, Chengdu
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2020年 / 41卷 / 01期
关键词：
316LN; Corrosion fatigue; Fatigue life; Stainless steel;
D O I：
10.13832/j.jnpe.2020.01.0037
中图分类号：
学科分类号：
摘要：
Corrosion fatigue behavior of SS316LN was investigated in high temperature water environment, under strain controlled loading. During the loading process, the phenomenon of first hardening and then softening occurred, and the peak stress has a drop after a rapid ascent with the rising of cycles. The fatigue life of 316LN decreases at high temperature in pure water and water with H3BO3 and LiOH, because high temperature and corrosive environment accelerated the corrosion fatigue failure of the 316LN. Under the condition of high strain amplitude, high temperature plays a major role in corrosion fatigue failure, while corrosion plays a major role in the condition of low strain amplitude. Fatigue striation, slip deformation zone and secondary crack can be observed on the cross section of the sample after the test. High temperature water corrosion environment will accelerate the crack growth and the fatigue failure of 316LN. © 2020, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.
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页码：37 / 42
页数：5
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