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.

引用

页数：14

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