Influence of yttrium on the structure and magnetostriction of Fes3Ga17 alloy

Polycrystalline Fe83Ga17 alloy rods with various amounts of yttrium were prepared by high vacuum induction melting. It is found that yttrium addition has a significant effect on the structure and magnetostriction of Fes3Ga17 alloy. The small addition of yttrium alters the solidification character an...

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Bibliographic Details
Published in:矿物冶金与材料学报：英文版 2012, Vol.19 (9), p.849-855
Main Author: Xi-ming Xiao Xue-xu Gao Ji-heng Li Jian-xin Xie
Format: Article
Language:English
Subjects:
晶粒形状
柱状晶粒
真空感应熔炼
磁致伸缩合金
磁致伸缩性能
结构
能量色散谱
钇
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Summary:Polycrystalline Fe83Ga17 alloy rods with various amounts of yttrium were prepared by high vacuum induction melting. It is found that yttrium addition has a significant effect on the structure and magnetostriction of Fes3Ga17 alloy. The small addition of yttrium alters the solidification character and the grain shape of Fe83Ga17 alloy, and as a result, columnar grains with the 〈100〉 preferential direction are pro- duced. Yttrium addition improves the magnetostrictive performance of the as-cast Fes3Ga17 alloy. The magnetostriction values of the as-cast alloy with 0.32at% and 0.64at% yttrium addition go up to 119×10^-6 and 137×10^-6 under 15 MPa compressive stress, respectively. The energy dispersive spectroscopy （EDS） result shows that almost all of the yttrium atoms exist in the Y2Fe17-xGax phase. A small amount of this kind of secondary phase cannot obviously increase the saturate magnetic field.
ISSN:1674-4799
1869-103X