期刊
RARE METALS
卷 33, 期 3, 页码 309-312出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-013-0183-1
关键词
Fe-Ga alloys; Magnetostriction; Microstructure; Melt quenching
资金
- National Basic Research Program of China [2012CB619404]
- National Natural Science Foundations of China [50925101, 51101006, 91016006, 51221163]
- Fundamental Research Funds for the Central Universities
The microstructure and magnetostrictive properties were investigated in the Tb doped Fe83Ga17-x Tb (x) (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 a parts per thousand yen 0.1. 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 preferred orientation, and the decrease of the magnetostriction is correlated with the appearance of the second phase along the grain boundary.
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