文献类型：期刊文献

英文题名：Stress corrosion cracking growth rate prediction model for nuclear power turbine rotor steel in a simulated environment

作者：Su, Tian[1];Huang, Yuhui[1];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

年份：2023

卷号：23

起止页码：830

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：;EI(收录号：20231113703860);WOS:【SCI-EXPANDED(收录号:WOS:000963429400001)】；

基金：Acknowledgement This work was financially sponsored by National Key R&D Program of China (Grant No. 2021YFC3001801) and the National Natural Science Foundation of China (Grant No. 51875202) .

语种：英文

外文关键词：Stress corrosion cracking; Crack growth rate; Prediction model; Nuclear steam turbine rotor

摘要：Considering the electrochemical reaction and chemical reaction near the crack in the local corrosion environment, the stress corrosion cracking growth rate prediction model for nuclear power turbine rotor steel was established based on the slip dissolution mechanism and finite element method. The calculated parameters were defined based on the material and electrochemical properties of steam turbine rotor in the simulated environment, and the calculated results can agree well with the experiment results. Results revealed that the stress intensity factor has an important influence on the local corrosion environment at the crack tip, the electrode potential is decreased and the process of anodic dissolution is accelerated with the increase of the stress intensity factor. Furthermore, the prediction model can describe stage-I and stage-II of stress corrosion cracking propagation well, and provide a possible trend prediction for practical production practice.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).