Y,Gd稀土元素对AZ61镁合金显微结构和力学性能的影响  

Effects of Rare Earth Element Y, Gd on Microstructures and Mechanical Properties of Magnesium Alloy AZ61

作　　者：宋晓杰[1] 李全安[1] 陈雷雷[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023

出　　处：《铸造技术》2014年第6期1124-1126,共3页Foundry Technology

基　　金：国家自然科学基金资助项目(51171059);河南省高校科技创新团队支持计划资助项目(2012 IRTSTHN008);河南省高校科技创新团队支持计划资助项目(2012 IRTSTHN008)

摘　　要：研究了稀土元素Y和Gd对AZ61镁合金显微结构和力学性能的影响。结果表明,稀土元素Y和Gd的加入使合金中析出了Al2Y和Al2Gd相;改善了镁合金的显微组织,提高了镁合金的力学性能;当Y和Gd的添加量为2.7%时晶粒最为细小,铸态和T6态合金的拉伸强度也都分别达到了236.2 MPa和254.8 MPa的最大值。The effect of the rare earth element Y and Gd on the microstructures and mechanical properties of magnesium alloy AZ61 was studied. The results show that the phases A12Y and A12Gd precipitate from the alloy after adding the rare earth elements Y and Gd into the alloys. The microstructure of the alloy is improved, and the mechanical properties of the alloy are also enhanced. And when the added weight amount of Y and Gd is 2.7%, the grain size is the smallest, and the tensile strength of the as-cast and T6 alloy is also maximal with 236.2 MPa and 254.8 MPa, respectively.

关 键 词：镁合金 显微组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]