文献类型：期刊文献

英文题名：Modeling and Prediction of Galvanic Corrosion for an Overlaying Welded Structure

作者：Huang, Yuhui[1];Zhang, Jianhui[1];Xuan, Fu-Zhen[1];Ma, Yunsheng[2]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Shandong Chambroad Holding Grp Co Ltd, Binzhou 256500, Shandong, Peoples R China

年份：2024

卷号：33

期号：12

起止页码：6111

外文期刊名：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

收录：;EI(收录号：20232714365286);WOS:【SCI-EXPANDED(收录号:WOS:001022635100013)】；

基金：AcknowledgmentsThis work was financially sponsored by National Natural Science Foundation of China (Grant No. 51875202).

语种：英文

外文关键词：finite element method; galvanic corrosion; overlaying welded joint

摘要：Taking 25Cr2NiMoV rotor steel overlaying welded joints as an example, a combination of experiment and finite element simulation was used to study and predict the galvanic corrosion behavior of welded joints. The galvanic corrosion performance was tested by macro-electrochemical and immersion tests. The tests showed that the base metal and the heat-affected zone were determined to be the cathode, while the welded metal acted as the anode. When the area ratio of cathode-to-anode increasing from 2:1 to 10:1, the corrosion depth increased from 52.47 to 119.41 & mu;m. Therefore, the corrosion depth increased with the increase of the area ratio of cathode-to-anode (Sc/Sa). Meanwhile, a finite element model (FEM) based on the immersion experiment condition was established. The FEM results can agree well with the immersion experiment results which indicated that the established galvanic corrosion model can simulate the actual galvanic corrosion of the welded joint to predict the long-term galvanic corrosion of the overlaying welded structure.