Effect of Hot Extrusion and Cyclic Extrusion Compression Progress on the Microstructures and Properties of Mg-Zn-Y-Nd Alloy
Magnesium alloys are promising candidate materials for cardiovascular stents due to their good biocompatibility and degradation property in human body.However,in vivo tests also show that improvement in mechanical property and corrosion resistance is necessary for wide application.In this study,hot extrusion and cyclic extrusion compression (CEC) were used on Mg-Zn-Y-Nd alloy,the effects of hot extrusion and CEC process on the microstructures,mechanical properties and corrosion properties of alloy were studied.The results showed that the microstructures of CEC treated Mg-Zn-Y-Nd alloy became finer and more homogenous,some nano-particles which came from the cluster phase uniformly precipitated inside grains,alloy had good mechanical properties and corrosion resistance.The immersion test results in SBF solution at 37℃ for 24h showed that the alloy after CEC treatment is uniform corrosion.
Hot extrusion Cyclic extrusion compression Mg-Zn-Y-Nd alloy Vascular stent
Shijie Zhu Qiong Wu Liguo Wang Qian Liu Gaochao Yue Shaokang Guan
School of Materials Science and Engineering, Zhengzhou University, 100 Kexue Road 450001,Zhengzhou, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
28-32
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）