Development of highly corrosion-resistant Mg-Al-Y extruded alloy via regulating the Mg17Al12 phase

被引：15
|
作者：
Wang, Haiyang [1 ]
Wang, Jie [1 ]
Yang, Yao [1 ]
Ying, Tao [1 ,2 ]
Xin, Zhifeng [3 ]
Hao, Ning [3 ]
Huang, Wei [3 ]
Zeng, Xiaoqin [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Lenovo Beijing Ltd, Beijing 100094, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 234卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Precipitation; Microstructure; Corrosion behavior; Heat treatment; AZ63 MAGNESIUM ALLOY; BEHAVIOR; MICROSTRUCTURE; AZ91; FILM; CA; DEGRADATION; PASSIVATION; STRENGTH; ND;
D O I：
10.1016/j.corsci.2024.112124
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A highly corrosion-resistant AW90 extruded alloy (Mg-9Al-0.2Y wt %) was developed via alloying and solutionaging treatment (PW = 0.14 mm/y). The solution-treated AW90 alloy exhibits the most severe localized corrosion due to the strong micro-galvanic acceleration effects. The finely dispersed Mg17Al12 phase promotes the strong quasi-passive behavior and uniform corrosion of the aged AW90 alloy due to the formation of a dense and uniform corrosion product film. The high corrosion resistance of the aged AW90 alloy is attributed to the formation of a Mg-Al layered double hydroxide film, which has stronger resistance to chloride ions.
引用
收藏
页数：19
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