Evolution of microstructure, mechanical properties and corrosion behavior of Al-4Mg-2Zn-0.3Ag (wt.%) alloy processed by T6 or thermomechanical treatment

被引：31
作者：
Guo, Cheng [1 ]
Zhang, Haitao [1 ]
Li, Shanshan [1 ]
Chen, Rixin [1 ]
Nan, Yunfei [1 ]
Li, Lei [1 ]
Wang, Ping [1 ]
Li, Baomian [1 ]
Cui, Jianzhong [1 ]
Nagaumi, Hiromi [2 ]
机构：
[1] Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Liaoning, Peoples R China
[2] Soochow Univ, Sch Iron & Steel, Suzhou 215100, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 188卷
基金：
中国国家自然科学基金;
关键词：
Aluminum alloy; Thermomechanical treatment; Corrosion; Mechanical properties; AL-MG ALLOY; INTERGRANULAR CORROSION; HARDENING RESPONSE; CU ADDITION; PRECIPITATION; AG; DEFORMATION; PARTICLES; DUCTILITY; STRENGTH;
D O I：
10.1016/j.corsci.2021.109551
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The evolution of microstructure, mechanical properties and intergranular corrosion (IGC) resistance of the heattreatable Al-Mg-Zn-Ag alloy processed by T6 or thermomechanical treatment (TMT) technologies are systematically investigated. The mechanical properties and IGC resistance are both improved by the TMT technology. The combination of pre-deformation with aging promotes the dynamic precipitation of nanoparticles and the formation of substructure. Consequently, the hardening effect of the alloy is improved. The intergranular microstructure of grain boundary precipitates and precipitate free zone can be ameliorated by optimizing of processing parameter of TMT technology, which greatly improve the resistance of IGC of the alloy.
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页数：13
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