Effect of Extrusion Process on Microstructure, Corrosion Properties, and Mechanical Properties of Micro-Alloyed Mg-Zn-Ca-Zr Alloy

被引：0
作者：
Yu, Zemin [1 ]
Hu, Wenxin [1 ]
Chen, Zhiqiang [1 ]
Shi, Lei [1 ]
Yang, Lei [2 ,3 ]
Jin, Jianfeng [2 ,3 ]
Zhang, Erlin [2 ,3 ]
机构：
[1] Baotou Res Inst Rare Earths, State Key Lab Baiyunobo Rare Earth Resource Res &, Baotou 014030, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ China, Shenyang 110819, Peoples R China
[3] Northeastern Univ, Res Ctr Met Wires, Shenyang 110819, Peoples R China
来源：
MATERIALS | 2024年 / 17卷 / 17期
关键词：
Mg-Zn-Ca-Zr alloy; extrusion; Zr-rich phase; corrosion properties; mechanical properties; MAGNESIUM ALLOYS; PURE MAGNESIUM; BEHAVIOR; RESISTANCE; SUSCEPTIBILITY; DEGRADATION;
D O I：
10.3390/ma17174263
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of the extrusion process on the microstructure, corrosion, and mechanical properties of Mg-Zn-Ca-Zr alloy has been investigated. Zn and Ca were both in a solid solution and only the Zr-rich phase was observed in the homogenized and extruded alloys. The Zr-rich phase was obviously refined after extrusion. The corrosion rate of the homogenized alloy decreased by about 25% after extrusion. This is because the refined Zr-rich phase was easier to cover with the deposited corrosion products, which reduced the cathodic reaction activity of the Zr-rich phase. The corrosion rate is similar for the alloys extruded at 320 degrees C and 350 degrees C since the size and distribution of the Zr-rich phase were not different in the two conditions. The alloy extruded at 320 degrees C has a smaller grain size and better comprehensive mechanical properties.
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页数：14
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