The effect of initial alloy temper on corrosion resistance for Al-Zn-Mg-Cu alloy

被引：16
|
作者：
Jiang, Yifu [1 ]
Xu, Siyang [2 ]
Gao, Shuang [3 ]
机构：
[1] Shenyang Inst Engn, Sch Mech Engn, Shenyang 110136, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[3] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai 201620, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 209卷
关键词：
Aluminum; Corrosion behavior; Mechanical properties; Pre-ageing; Retrogression and re-aging; QUENCH SENSITIVITY; INTERGRANULAR CORROSION; EXFOLIATION CORROSION; ALUMINUM-ALLOY; BEHAVIOR; MICROSTRUCTURE; MECHANISM; SUSCEPTIBILITY; STRENGTH; AA7075;
D O I：
10.1016/j.corsci.2022.110730
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of initial alloy temper on corrosion resistance for Al-Zn-Mg-Cu alloy was investigated in detail. The results showed that the specimens after pre-ageing (PA) and simulated baking (SB) treatment exhibited the high strength (ultimate tensile strength: 543 MPa, yield strength: 445 MPa), contributing to improving the stress corrosion cracking resistance with the strength loss of 2.7 % during the slow strain rate test. In addition, the inter-granular corrosion property was enhanced by PA + SB process, and the maximum corrosion depth of PA + SB specimen was only 19.77 mu m, which was attributed to the large-sized grain boundary precipitates with high Cu content.
引用
收藏
页数：10
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