Title :
Microstructure and magnetostrictive properties of as cast Fe83Ga17Tbx alloys
Author :
Pei Gong ; Zhao, Z.Q. ; Jiang, L.P. ; Wu, Sissi Xiaoxiao ; Zhang, G.R. ; Hao, H.B.
Author_Institution :
Inner Mongolia Univ. of Technol., Hohhot, China
Abstract :
The Fe100-xGax (x = 15-21) Fe83Ga17Tbx (x = 0.2, 0.4, 0.6, 0.8) alloys were prepared by non-consumable arc-melting method. The microstructure and magnetostrictive properties of Fe100-xGax (x = 15-21) /Fe83Ga17Tbx (x = 0.2, 0.4, 0.6, 0.8) as cast alloys was investigated at room temperature. The results indicated that the magnetostrictive properties for Fe83Ga17Tb0.2 compared with Fe83Ga17 (at%) alloy were obviously improved. Magnetostrictive coefficient could reach to 500×10-6 under an external magnetic field of 105.5kA·m-1 for the Fe83Ga17Tb0.2 as cast alloy. The enhancement of magnetostrictive coefficient in Fe83Ga17Tb02 in high field was due to the [100] textured. Results of XRD and SEM show that terbium was not exist in A2 phase (matrix) of Fe83Ga17Tbx alloys, but was enriched in grain boundary.
Keywords :
X-ray diffraction; gallium alloys; grain boundaries; iron alloys; magnetostriction; melt processing; scanning electron microscopy; terbium alloys; texture; Fe83Ga17Tbx; SEM; XRD; [100] texture; as cast alloys; grain boundary; magnetostrictive coefficient; microstructure; nonconsumable arc-melting method; temperature 293 K to 298 K; Gallium; Grain boundaries; Iron; Magnetic hysteresis; Magnetic resonance imaging; Magnetostriction; Fe-Ga alloys; magnetostrictive coefficient; terbium Introduction;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6023345
