稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
Journal of Rare Earths
2015年
10期
1087-1092
,共6页
李纪恒%肖锡铭%袁超%高学绪%包小倩
李紀恆%肖錫銘%袁超%高學緒%包小倩
리기항%초석명%원초%고학서%포소천
yttrium%Fe-Ga alloy%magnetostriction%mechanical property%rare earths
Polycrystalline rod samples of (Fe83Ga17)100–xYx(x=0, 0.16, 0.32, 0.48, 0.64) were prepared by induction melting under ar-gon 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 Fe83Ga17 alloy since yttrium was hardly dissolved into theα-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.
