稀土Gd对Al-20Si合金显微组织和力学性能的影响  

Effects of RE Gd on Microstructure and Mechanical Properties of Al-20Si Aluminum Alloy

作　　者：胡勇 余楠 HU Yong;YU Nan(School of Materials Science and Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学材料科学与工程学院,江西南昌330013

出　　处：《热加工工艺》2020年第6期44-46,共3页Hot Working Technology

基　　金：江西省自然科学基金项目(20171BAB216031)。

摘　　要：研究了稀土Gd对Al-20Si合金组织和性能的影响。结果表明:当稀土Gd含量为1.5%时,α-Al和初生Si明显细化,力学性能最佳,抗拉强度为177 MPa,硬度为119 HBW。The effects of RE Gd on the microstructure and mechanical properties of Al-20Si alloy were investigated.The results show that when the content of rare earth Gd is 1.5%,α-Al and primary Si are obviously refined,and the mechanical properties are best.The tensile strength is 197 MPa and the hardness is 119 HBW.

关 键 词：AL-20SI合金 GD 显微组织 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]