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.

引用

页数：16

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