Effects of Prior Corrosion with and Without Stress on the Mechanical Properties of 7475-T761 Aluminum Alloy |
| |
Authors: | Zuo-Yan Ye Dao-Xin Liu Meng Yuan Xiao-Ming Zhang Zhi Yang Ming-Xia Lei |
| |
Affiliation: | 1.Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi’an, 710072, China2 Aviation Industry Corporation of China the First Aircraft Institute, Xi’an, 710089, China |
| |
Abstract: | The effect of prior corrosion on the mechanical properties of 7475-T761 aluminum alloy was investigated by immersion test, stress corrosion test, cathode charge method and electrochemical polarization test. Results show that prior corrosion in the solution with 3 wt% Na Cl and 0.5 wt% H2O2 leads to mechanical properties deterioration of 7475-T761 aluminum alloy. Moreover, the elongation decreases significantly. This is mainly attributed to electrochemical corrosion and hydrogen embrittlement, in which corrosion plays a major role. Tensile stress promotes the degradation of the mechanical properties by accelerating the pitting corrosion and hydrogen embrittlement. |
| |
Keywords: | Prior corrosion Corrosion with stress 7475 aluminum alloy Mechanical properties Hydrogen embrittlement |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《金属学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《金属学报(英文版)》下载全文 |
|