Y对铸态Fe_(81)Ga_(19)合金组织结构及磁致伸缩性能的影响  

Effect of Y on Microstructure and Magnetostriction Properties of as Cast Fe_(81)Ga_(19) Alloys

作　　者：龚沛[1] 江丽萍[2] 闫文俊[1] 赵增祺[2] 

机构地区：[1]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 [2]包头稀土研究院,内蒙古包头014010

出　　处：《稀土》2016年第2期91-95,共5页Chinese Rare Earths

基　　金：国家自然科学基金项目(51461001);内蒙古自然科学基金项目(2015MS0527)

摘　　要：采用非自耗电弧炉制备了铸态Fe_(81)Ga_(19-x)Y_x(x=0.1,0.2,0.3,0.4,0.5)合金,通过金相观察、X射线衍射分析和磁致伸缩应变测量,研究了Y掺杂对铸态Fe_(81)Ga_(19)合金显微组织结构和磁致伸缩性能的影响。结果显示,Y的掺杂细化了合金的晶粒;掺Y后Fe_(81)Ga_(19)合金的择优取向增强;除了基体相(无序A2相)外,在铸态Fe_(81)Ga_(19-x)Y_x合金中还检测到DO_3相;Fe_(81)Ga_(19)-xYx合金最大饱和磁致伸缩应变在2500 Oe磁场强度下为97×10^(-6),与Fe_(83)Ga_(17-x)Y_x相比饱和磁致伸缩应变显著降低,DO_3相的析出是导致Fe_(81)Ga_(19-x)Y_x饱和磁致伸缩应变降低的原因。The as cast Fe（81）Ga（19-x）Yx（x = 0. 1,0. 2,0. 3,0. 4,0. 5） alloys were prepared by non consumable arc furnace,and the influence of yttrium on microstructure and magnetostrictive property of Fe（81）Ga（19） alloys was researched. The results show that the grain of Fe（81）Ga（19） alloys was refined by yttrium doping,and the preferential direction of columnar grains was enhanced;In addition to the matrix phase（ disordered A2 phase）,the DO3 phase was also detected in as cast Fe（81）Ga（19-x）Yx alloys; Maximum saturation magnetostrictive strain（97 × 10（-6）） of Fe（81）Ga（19-x）Yx alloys was significantly lower than that of yttrium doped Fe（83）Ga（17） alloys,and the precipitation of DO3 phase leads to the decrease of saturation magnetostriction strain.

关 键 词：FE-GA合金 钇掺杂 磁致伸缩 

分 类 号：TG146.453[一般工业技术—材料科学与工程]