Clarifying the role of quenching conditions on microstructure, intergranular corrosion behavior and mechanical properties of Al-Mg-Si-Cu alloy with high Cu

被引：2
|
作者：
Feng, Zhixin [1 ]
Wu, Zibin [1 ]
Wang, Dongtao [1 ]
Nagaumi, Hiromi [1 ]
Li, Yifeng [1 ]
Chen, Nan [1 ]
Zhang, Xiaozu [1 ]
Wang, Rui [1 ]
Hua, Fuan [2 ]
Zhang, Haitao [3 ]
Guo, Cheng [4 ]
Zhang, Bo [5 ]
机构：
[1] Soochow Univ, High Performance Met Struct Mat Res Inst, Suzhou 215021, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[3] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
[4] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Hebei, Peoples R China
[5] Shandong Weiqiao Aluminum & Elect Co Ltd, Binzhou 256200, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 237卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Quenching conditions; Intergranular corrosion behavior; Mechanical properties; HARDENING BEHAVIOR; TEXTURE EVOLUTION; COPPER CONTENT; HEAT-TREATMENT; PRECIPITATION; RESISTANCE; MODEL; STRENGTH; HOMOGENIZATION; HARDNESS;
D O I：
10.1016/j.corsci.2024.112336
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of quenching conditions on intergranular corrosion behavior and mechanical properties of Al-Mg-SiCu alloys with high Cu were investigated. Results indicate that quenching conditions plays a pivotal role in boundary precipitates at fibrous fine regions. Under water-quenching conditions, the grain boundary precipitates are mainly discontinuous Q ' phases. Interestingly, the precipitates are dense and continuously distributed at lowangle/sub-grain boundaries under air-quenching conditions. It intensifies the boundary corrosion tendency at misorientation <10 degrees, resulting in poor corrosion resistance for air-quenching alloys. Therefore, Al-Mg-Si-Cu profiles with high Cu prepared by water quenching after extrusion can obtain superior mechanical properties and corrosion resistance.
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页数：16
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