文献类型：期刊文献

英文题名：Experimental and Modeling Analysis of Hydrogen Motion Behavior in Welding Zone of 2.25Cr-1Mo-0.25 V Steel Welded Joint with Hydrogen Corrosion

作者：Yin, Changdong[1];Ye, Dongdong[2];Xu, Zhou[1];Chen, Jianjun[3];Wu, Yiwen[4];Liu, Houli[3];Ge, Xin[1];Liu, Qiang[1];Zeng, Guiling[1]

机构：[1]Wuhu Inst Technol, Sch Elect & Automat, Wuhu 241006, Peoples R China;[2]Anhui Polytech Univ, Sch Artificial Intelligence, Wuhu 241000, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Safety Sci Pressurized Syst, Minist Educ, Shanghai 200237, Peoples R China;[4]Wuhu Inst Technol, Inst Intelligent Mfg, Wuhu 241006, Peoples R China

年份：2023

卷号：29

期号：8

起止页码：2242

外文期刊名：METALS AND MATERIALS INTERNATIONAL

收录：;EI(收录号：20230513462832);WOS:【SCI-EXPANDED(收录号:WOS:000920400600002)】；

基金：AcknowledgementsThis work was supported by the National Natural Science Foundation of China (52205547), Science and Technology Plan Project of Wuhu City (No. 2022jc48, No. 2022yf67), Key Research and Development Projects in Anhui Province (No. 2022a05020004), Key projects of Natural Science Research of Universities in Anhui Province (KJ2020A0925, KJ2021A1327), Scientific Research Start-up Fund for Introduced Talents of Wuhu Institute of Technology (wzyrc202201). The authors are deeply grateful to the editors and anonymous reviewers for their valuable comments and discussions.

语种：英文

外文关键词：2.25Cr-1Mo-0.25 V steel welded joint; Hydrogen embrittlement (HE); Hydrogen permeability; Hydrogen diffusion; Hydrogen-resistant coatings (HRCs)

摘要：Understanding and solving the problem of hydrogen damage due to the degradation of service performance of high-strength steel caused by hydrogen penetration is a milestone for the reliability improvement of high-end hydrogen energy equipment. From the perspective of microscopic hydrogen movement behavior, this study investigated the permeability of hydrogen in base metal (BM) and welded metal (WM) of 2.25Cr-1Mo-0.25 V steel welded joint through electrochemical hydrogen permeation test, and the analytical models of hydrogen penetration and hydrogen diffusion in the welding zone were established, and the effect of adding hydrogen-resistant coatings (HRCs) on hydrogen movement behavior in steel substrate was studied. The results showed that the diffusivity of hydrogen in WM of the welded joint was significantly lower than that in BM, and the hydrogen concentration in BM was higher than that in WM at the beginning of hydrogenation without the addition of HRCs protection, while it tended to be consistent at the later stage. However, the hydrogen concentration in WM was lower than that in BM after adding HRCs and would be always higher than that in BM after a certain period of time, and the difference was directly related to the hydrogen resistance of the coatings. Additionally, the difference between the intermediate and outer layers for the welding zone steel substrate with and without HRCs presented a trend of rapid increase followed by a slow decrease. These findings could provide an important reference value for hydrogen damage protection measures and related researches on HRCs.