Microstructure and magnetostrictive properties of Tb doped Fe–Ga bulk alloys prepared by melt quenching

作     者：Shu-Xin Zhang Wei Wu Xiao-Xi Zhu Jing-Hua Liu Cheng-Bao Jiang 

作者机构：School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2014年第33卷第3期

页      面：309-312页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Basic Research Program of China (No. 2012CB619404) the National Natural Science Foundations of China (Nos. 50925101, 51101006, 91016006 and 51221163) the Fundamental Research Funds for the Central Universities 

主　　题：Fe-Ga alloys Magnetostriction Microstructure Melt quenching 

摘      要：The microstructure and magnetostrictive properties were investigated in the Tb doped Fe83Ga17-xTbx（x = 0.05, 0.10, 0.20, 0.30, 0.40, 0.50） bulk rods prepared by melt rapidly quenching. The partial solid solubility of Tb in the Fe-Ga matrix was preliminary detected by the lattice parameters and SEM observation. The matrix keeps A2 structure and the second phase appears surround the grain boundary as x C 0.1. h100 i preferred orientation is also observed for x = 0.1 sample along the axis of the quenched rod. The saturation magnetostriction first increases and maximum value reaches at x = 0.1, and then decreases with Tb addition increasing. The initial increase of the magnetostriction should be associated with the partial solution of Tb in the matrix, the maximum value at x = 0.1 should be attributed to the h100 i preferred orientation, and the decrease of the magnetostriction is correlated with the appearance of the second phase along the grain boundary.