Mechanical properties and biocorrosion resistance of Mg-Nd-Zn-Zr alloy improved by cyclic extrusion and compression

被引：69
作者：
Zhang, Xiaobo [1 ,2 ]
Yuan, Guangyin [1 ]
Wang, Zhangzhong [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Nanjing Inst Technol, Sch Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 74卷
基金：
中国博士后科学基金;
关键词：
Magnesium alloy; Biomaterials; Corrosion; Mechanical properties; Cyclic extrusion and compression (CEC); MAGNESIUM ALLOY; AZ31;
D O I：
10.1016/j.matlet.2012.01.086
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mg-Nd-Zn-Zr alloy is a promising biodegradable magnesium alloy due to higher mechanical properties and better corrosion resistance than commercial AZ31 and WE43 alloys. However, the mechanical properties and the corrosion resistance of the alloy should be further improved to meet the requirement of clinical application. In this study, cyclic extrusion and compression (CEC) processing was adopted to refine grains of Mg-Nd-Zn-Zr alloy. Mechanical properties and biocorrosion resistance of the alloy were evaluated. The results show that the yield strength, ultimate tensile strength and elongation of the alloy under CEC processing has similar to 71%, similar to 28% and similar to 154% improvement, respectively. The biocorrosion resistance of the alloy under CEC processing was also improved apparently. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：128 / 131
页数：4
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