Zn对生物医用Mg-Si合金组织与力学性能的影响  

Effect of Zn on Microstructure and Mechanical Properties of Biodegradable Mg-Si Alloy

作　　者：周益环 吴卓桐 任佳俊 金帆[1] 张磊[1] ZHOU Yi-huan;WU Zhuo-tong;REN Jia-jun;JIN Fan;ZHANG Lei(School of Aeronautical Manufacture Engineering,Nanchang Hang kong University)

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2022年第2期32-35,101,共5页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：国家自然科学基金(51401102);南昌航空大学第十六届“三小”课题。

摘　　要：在生物医用Mg-1.38Si合金中加入Zn,研究Zn添加量对合金凝固组织和力学性能的影响。结果表明,Zn对合金中的Mg_(2)Si相具有较好的变质效果。添加Zn后,合金中的初生Mg_(2)Si相由多边形状转变为尺寸更为细小的颗粒状。随着Zn含量的增加,共晶Mg_(2)Si相逐渐细化。添加Zn能够改善Mg-1.38Si合金的力学性能。随着Zn含量的增加,合金的室温抗拉强度、伸长率、压缩断裂强度、塑性变形量均逐渐提高。The effect of Zn on microstructure and mechanical properties of biodegradable Mg-1.38Si alloy was investigated.The results show that Zn has preferable modification effect on Mg_(2)Si phase in as-cast Mg-1.38Si alloy.The morphology of primary Mg_(2)Si phase changes from polyhedral to finely particle-like.With the increase of Zn content,the size of eutectic Mg_(2)Si phase gradually decreases.The mechanical properties of as-cast Mg-1.38Si alloy were improved by Zn addition.The tensile strength,elongation,compressive fracture strength and plastic deformation of the alloy gradually increase with the increase of Zn content.

关 键 词：ZN MG-SI合金 组织 力学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]