Effect of yttrium on the mechanical and magnetostrictive properties of Fe_(83)Ga_(17) alloy  

作　　者：李纪恒 肖锡铭 袁超 高学绪 包小倩 

机构地区：[1]State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing

出　　处：《Journal of Rare Earths》2015年第10期1087-1092,共6页稀土学报（英文版）

基　　金：Project supported by the National Basic Research Program of China(973 Program)(2011CB606304);National Natural Science Foundation of China(51271019);the Fundamental Research Funds for the Central Universities(FRF-SD-12-025A)

摘　　要：Polycrystalline rod samples of （Fe83Ga17）100-xYx （x=0, 0.16, 0.32, 0.48, 0.64） were prepared by induction melting under argon atmosphere. Effect of yttrium on the mechanical and magnetostrictive properties of Fe83Ga17 alloy was investigated. Small amount of yttrium （0.16 at.%） increased the tensile strength of as-cast Fe83Ga17 alloys to 674 MPa and improved the ductility with elongation of 4.2% at room temperature. The Y2Fe17-xGax （6≤x≤7） phase was formed in the Y-doped Fe83Gax7 alloy since yttrium was hardly dissolved into the a-Fe lattice. Y2（FeGa）17 secondary phase dispersed along the grain boundaries and inside the grains played an important role for the enhancement of mechanical property. The 0.64 at.% Y-doped alloy had magnetostriction of 133 ppm, which was thought to be associated with the alteration of the grain shape and 〈 100〉 preferential orientation along the axial direction of rods.Polycrystalline rod samples of （Fe83Ga17）100-xYx （x=0, 0.16, 0.32, 0.48, 0.64） were prepared by induction melting under argon atmosphere. Effect of yttrium on the mechanical and magnetostrictive properties of Fe83Ga17 alloy was investigated. Small amount of yttrium （0.16 at.%） increased the tensile strength of as-cast Fe83Ga17 alloys to 674 MPa and improved the ductility with elongation of 4.2% at room temperature. The Y2Fe17-xGax （6≤x≤7） phase was formed in the Y-doped Fe83Gax7 alloy since yttrium was hardly dissolved into the a-Fe lattice. Y2（FeGa）17 secondary phase dispersed along the grain boundaries and inside the grains played an important role for the enhancement of mechanical property. The 0.64 at.% Y-doped alloy had magnetostriction of 133 ppm, which was thought to be associated with the alteration of the grain shape and 〈 100〉 preferential orientation along the axial direction of rods.

关 键 词：YTTRIUM Fe-Ga alloy MAGNETOSTRICTION mechanical property rare earths 

分 类 号：TG131[一般工业技术—材料科学与工程]