固溶处理对Mg-3Zn-xZr合金力学性能及耐腐蚀性的影响  

Effects of Solution Treatment on Mechanical Properties and Corrosion Resistance of Mg-3Zn-xZr Alloy

作　　者：姚磊[1] 谢灵[1] 王亚东[1] 马立群[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009

出　　处：《有色金属工程》2016年第5期18-22,共5页Nonferrous Metals Engineering

基　　金：江苏高校优势学科建设工程项目(PAPD)

摘　　要：采用低碳钢电阻炉制备Mg-3Zn-x Zr(x=0.1,0.3,0.5,0.7)合金。研究锆含量不同时合金材料经固溶处理后的微观结构组织、力学性能及耐腐蚀性能。结果表明,随着锆含量从0.1%增加到0.7%,合金晶粒逐步细化,抗拉强度、屈服强度和塑性变形能力得到显著改善,耐蚀性能先升高后降低。固溶处理后,合金的晶粒虽略有长大,但力学性能得到进一步改善,耐蚀性能也得到提高。Mg-3Zn-xZr alloys were prepared in a low carbon steel resistance furnace. Microstructure,mechanical properties and corrosion resistance of magnesium alloy samples with different contents of zirconium after solid solution treatment were investigated. The results show that when the Zr element content increased from 0. 1% to 0. 7%,the grain size refined gradually,and tensile strength,yield strength and plastic deformation capacity were obviously improved. Moreover,corrosion resistance of Mg-3Zn-xZr increased at the beginning and then decreased. The grain became slightly larger after solid solution treatment,but the mechanical properties and corrosion resistance were further enhanced.

关 键 词：镁合金 固溶处理 力学性能 腐蚀 

分 类 号：TG113.23[金属学及工艺—物理冶金] TG156.1[金属学及工艺—金属学]