Effect of selective oxidation on corrosion behavior of Mg-Gd-Y-Zn-Zr alloy

被引：35

作者：

Wu, Luoyi ^{[1
,2
]}

Li, Haotian ^{[1
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, Hunan Prov Key Lab Spray Deposit Technol & Applic, Changsha 410082, Hunan, Peoples R China

来源：

CORROSION SCIENCE | 2018年 / 142卷

关键词：

Magnesium; Alloy; Rare earth elements; EPMA; Selective oxidation; Pitting corrosion; STACKING ORDERED PHASE; MECHANICAL-PROPERTIES; MAGNESIUM; MICROSTRUCTURE; DISSOLUTION; RESISTANCE; EVOLUTION; PHOSPHATE; CHLORIDE; CAST;

D O I：

10.1016/j.corsci.2018.07.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The multilayer features are observed in the microstructures of Mg-Gd-Y-Zn-Zr alloy after high-heat treatment. The microstructures of the heat-treated samples in depth can be divided into four zones: the rare earth (RE) oxide film, the layer without long-period stacking ordered (LPSO) phases, the lamellar LPSO layer and the blocky LPSO zone. The corrosion behavior of peak-aged samples was investigated. The results indicate that the RE-rich scale and the LPSO-free layer, which are generated as the result of selective oxidation during high-heat treatment, significantly improve the corrosion resistance of Mg-Gd-Y-Zn-Zr alloy.

引用

页码：238 / 248

页数：11

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