Multiple impacts of trace Tb addition on the secondary recrystallization andmagnetostriction of Fe–Ga thin sheet  

作　　者：Jiande Liu Zhenghua He Yuhui Sha Xiaofei Zhu Hongbo Hao Lijia Chen Liang Zuo 

机构地区：[1]School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China [2]Shenyang Key Laboratory of Advanced Structural Materials and Applications,Shenyang University of Technology,Shenyang 110870,China [3]Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China [4]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [5]State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第4期902-914,共13页矿物冶金与材料学报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China (No. 52004164);the Funding Program of Science and Technology Department of Liaoning Province, China (No. 2023-MSLH-249);the Funding Program of Education Department of Liaoning P rovince, China (No. LMGD2023018)。

摘　　要：Fe–Ga sheets with large magnetostriction are required for improving the conversion efficiency under the ultra-high frequencymagnetic field. Trace Tb element doping can simultaneously improve the magnetostriction and ductility of Fe–Ga alloy. However, the im-pact of trace Tb doping on the microstructure and magnetostriction of Fe–Ga thin sheets is an open question. In this paper, the effects oftrace Tb addition on the secondary recrystallization and magnetostriction of Fe–Ga thin sheets are systematically studied by comparing thecharacteristics evolution of precipitation, texture, and nanoinclusions. The results indicate that trace Tb addition accelerates the secondaryrecrystallization of Goss texture due to the combined action of the bimodal size distributed precipitates, smaller grains, and more HEGBsin primary recrystallization. After quenching at 900℃, the magnetostriction value in 0.07 at %Tb-doped Fe_(81)Ga_(19)thin sheets increases by 30% to that of Fe_(81)Ga_(19)thin sheets. The increase in magnetostriction is attributed to the decrease in the number of Tb-rich precipitates andthe higher density of the nanometer-sized modified-D0_(3)inclusions induced by the dissolving of trace Tb elements after quenching. Theseresults demonstrate a simple and efficient approach for preparing Fe–Ga thin sheets with a large magnetostrictive coefficient by a combin-ation of trace RE element addition and conventional rolling method.

关 键 词：magnetostriction alloy thin sheets RE dopant secondary recrystallization precipitate phase nanoheterogeneity. 

分 类 号：TG1[金属学及工艺—金属学]