Role of Microalloyed Y and Gd in Improving the Corrosion Resistance of Rolled Mg-3Al-1Zn Alloy

被引：5
|
作者：
Wang, Panpan [1 ,2 ]
Jiang, Haitao [3 ]
Wang, Yujiao [3 ]
Zhang, Yun [3 ]
Tao, Jingchao [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[3] Univ Sci & Technol Beijing, Inst Engn Technol, Beijing 100083, Peoples R China
来源：
ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2022年 / 35卷 / 06期
关键词：
AZ31; alloy; Second phases; Volta potential difference; Y; Gd; MAGNESIUM ALLOY; MICROSTRUCTURE; BEHAVIOR; CA; ND;
D O I：
10.1007/s40195-021-01332-z
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The corrosion performances of rolled AZ31 alloy with addition of Y and Gd were comparatively investigated. The corrosion rates of AZ31 alloy modified with Y and Gd were 3.3 and 3.7 mm/y immersing for 24 h in 3.5 wt% NaCl solution, respectively, which were much lower than that of AZ31 alloy (23.6 mm/y). The remarkable improvement in corrosion performance by adding Y or Gd was ascribed to preferentially form less noble Al2Y or Al6GdMn6 and more protective corrosion product layer, resulting in the reduction in H-2 evolution rate and the enhancement of passivity.
引用
收藏
页码：941 / 947
页数：7
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