Effect of thermal aging on the low cycle fatigue behavior of Z3CN20.09M stainless steel in high-temperature pressurized water

被引：3

作者：

Qiao, Yufei ^{[1
,2
]}

Zheng, Hui ^{[3
]}

Tan, Jibo ^{[1
]}

Yang, Shuangliang ^{[3
]}

Zhang, Ziyu ^{[1
]}

Li, Jie ^{[3
]}

Wu, Xinqiang ^{[1
]}

Ke, Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Mat, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China

[3] State Nucl Power Plant Serv Co, Shanghai 200233, Peoples R China

来源：

CORROSION SCIENCE | 2024年 / 229卷

关键词：

Stainless steel; Thermal aging; Corrosion fatigue; Ferrite; High temperature corrosion; ENVIRONMENTALLY ASSISTED CRACKING; CORROSION-FATIGUE; DELTA-FERRITE; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; G-PHASE; EMBRITTLEMENT; INITIATION; WELD; CF3;

D O I：

10.1016/j.corsci.2024.111869

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of thermal aging (0 h- 15,000 h at 400 degrees C) on the low cycle fatigue properties of Z3CN20.09M stainless steel was investigated. The micro-hardness of the ferrite increases with thermal aging time, while that of the austenite is almost unchanged. The fatigue life of Z3CN20.09M stainless steel in high-temperature pressurized water decreases with thermal aging time. The fatigue cracks formed everywhere, mainly including at slip bands in austenite, at the delta/gamma phase boundary and in ferrite. Thermal aging promotes crack initiation and propagation in ferrite. The effect of thermal aging on the fatigue damage process is discussed.

引用

页数：13

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