Effect of Ce addition on the microstructure and tensile properties of extruded Mg-Zn-Zr alloys

被引：57

作者：

Jeong, Hu Young ^{[1
]}

Kim, Beomcheol ^{[1
]}

Kim, Sung-Geun ^{[1
]}

Kim, Hyeon Ju ^{[1
]}

Park, Sung Soo ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Ulsan 689798, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 612卷

基金：

新加坡国家研究基金会;

关键词：

Magnesium; Extrusion; Microstructure; Grain refinement; Particle; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; CERIUM ADDITION; MAGNESIUM ALLOY; LOW-TEMPERATURE; HIGH-STRENGTH; ZK60; ALLOY; SUPERPLASTICITY; EXTRUSION;

D O I：

10.1016/j.msea.2014.06.054

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and tensile properties of extruded Mg-Zn-Zr-Ce alloys with different Ce contents were investigated. Ce addition to ternary Mg-Zn-Zr alloy resulted in significant grain refinement as well as a change in the type of second phase particles from MgZn to Ce(Mg1-xZnx)(11), which has a C-centered orthorhombic structure with lattice parameters of a=0.999 nm, b=1.146 nm, and c=0.976 nm. However, fine MgZn2 precipitates were found to exist in the extruded alloys regardless of the level of Ce content. The yield and ultimate strengths of the extruded alloys were significantly increased by Ce addition although the presence of coarse Ce(Mg1-xZnx)(11) particles has an adverse effect on ductility. (C) 2014 Elsevier S.V. All rights reserved.

引用

页码：217 / 222

页数：6

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