Effect of heat treatment on fatigue crack growth behavior of 316NG austenitic stainless steel in deaerated water at 325 °C

被引：4

作者：

Xiao, Jun ^{[1
]}

Zheng, Yu Qi ^{[1
]}

Xiao, Ting ^{[1
]}

Wang, Hao ^{[1
]}

Chen, Yong ^{[1
]}

Qiu, Shao Yu ^{[1
]}

Gong, Xing ^{[2
]}

机构：

[1] Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610213, Peoples R China

[2] Shenzhen Univ, Coll Phys & Optoelect Engn, Adv Nucl Energy Res Team, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2021年 / 557卷

关键词：

316NG austenitic stainless steel; Fatigue crack growth; Deaerated water; LOW-CYCLE FATIGUE; CORROSION-FATIGUE; PHASE PRECIPITATION; CREEP-PROPERTIES; TEMPERATURE; MICROSTRUCTURE; NB; HARDNESS; RECRYSTALLIZATION; INITIATION;

D O I：

10.1016/j.jnucmat.2021.153298

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

316NG (00Cr17Ni12Mo2N) austenitic stainless steel was heat-treated at 60 0, 725 and 10 0 0 degrees C to investigate the effects of heat treatment temperature and holding time on the fatigue crack growth behavior of this steel in deaerated water at 325 degrees C. It is found that fatigue crack growth rates in air at room temperature are decreased after the heat treatments, due to a reduced dislocation density. Corrosion fatigue crack growth rates in water at 325 degrees C are also decreased after the heat treatments at 600 and 10 0 0 degrees C for 1 h, while the heat treatment at 725 degrees C leads to a moderate increase in the fatigue crack growth rate. The latter phenomenon results from a higher amount of CrNbN (Z-phase) precipitates formed in the steel after the annealing at 725 degrees C. (c) 2021 Elsevier B.V. All rights reserved.

引用

页数：12

共 52 条

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