Effect of heat treatment on corrosion behavior of Mg-5Gd-3Y-0.5Zr alloy

被引：31
作者：
Zhang, Qian [1 ]
Li, Quanan [1 ,2 ]
Chen, Xiaoya [1 ,2 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China
[2] Prov & Minist Coconstruct Collaborat Innovat Ctr, Luoyang 471023, Peoples R China
来源：
RSC ADVANCES | 2020年 / 10卷 / 71期
基金：
中国国家自然科学基金;
关键词：
MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; RARE-EARTH; BIO-CORROSION; MICROSTRUCTURE; CHLORIDE; PERFORMANCE; RESISTANCE; EXTRUSION; AP65;
D O I：
10.1039/d0ra08933h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The effects of different heat treatment processes on the microstructure and corrosion behavior of Mg-5Gd-3Y-0.5Zr (GW53K) magnesium alloy were studied by means of microanalysis, weight loss test and electrochemical test. The results show that appropriate heat treatment can improve the corrosion resistance of the alloy. Among the tested alloys, the T6-12 h alloy has the best corrosion resistance, which is mainly attributed to the morphology and distribution of the Mg-RE phase. The corrosion rate of the T4 alloy is similar to that of the T6-12 h alloy. The corrosion resistance of the T4 alloy may be reduced under long-term corrosion due to the existence of surface corrosion microcracks.
引用
收藏
页码：43371 / 43382
页数：12
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