通过向纯镁中添加微量的合金化元素(Y、Zn和Zr),采用熔融浇铸法制备了名义成分为Mg-1.5Y-1.2Zn-0.44Zr四元可降解镁合金生物材料,并对其进行了均匀化处理和挤压.对这3种状态的镁合金进行了微观结构及在模拟体液(SBF)中体外降解行为的测试和分析,结果表明,合金主要由α-Mg基体和MgI2ZnY第二相组成；合金经过挤压后的组织得到了明显的细化；因此挤压后合金的降解性能得到明显改善；合金在模拟体液中生成的降解产物主要是含Ca和Mg的磷酸盐.
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