文献类型：期刊文献

英文题名：Study on hydrogen-assisted stress corrosion cracking behavior of 7050 aluminum alloy

作者：Zhang, Qiang[1,2];Shao, Shanshan[3];Huang, Yuhui[1,2];Tu, Shan-Tung[1,2]

机构：[1]Shanghai Inst Aircraft Mech & Control, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Minist Educ, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[3]China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China

年份：2025

卷号：35

起止页码：6184

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

收录：;EI(收录号：20251017988777);WOS:【SCI-EXPANDED(收录号:WOS:001440677900001)】；

基金：This work was financially sponsored by National Natural Science Foundation of China (Grant No. 52375147) . Shanghai Gaofeng Project for University Academic Program Development also sponsored this work.

语种：英文

外文关键词：Aluminum alloy; Stress corrosion cracking sensitivity; Anodic dissolution; Hydrogen induced cracking

摘要：The effect of hydrogen on the stress corrosion cracking(SCC) susceptibility of 7050 aluminum alloy in 3.5% wt. NaCl solution was investigated by slow strain rate tensile (SSRT) tests with and without hydrogen pre-charging. The experimental results indicated that the stress corrosion cracking (SCC) mechanism of 7050 aluminum alloy is primarily dominated by anodic dissolution, while hydrogen-assisted anodic dissolution during the crack propagation process. The strength and ductility of the aluminum alloy was significantly influenced by hydrogen content. This phenomenon is attributed to hydrogen-induced Mg segregation at grain boundaries, which subsequently facilitates localized anodic dissolution in these regions.