论文部分内容阅读
采用区熔定向凝固方法,制备<110>取向Tb0.36Dy0.64(Fe0.85Co0.15)2合金棒。用管式炉,在1000℃进行4h的均匀化处理;沿垂直合金棒轴向,在240kA/m中进行磁场退火处理。研究了热处理方式对合金取向、显微组织和磁致伸缩的影响。结果表明,均匀化处理和磁场退火处理均不改变合金轴向择优取向;均匀化处理后,网状富稀土相球状聚集,有效地提高了合金的磁致伸缩,“跳跃”效应增强;磁场退火处理后,合金在无预压力下的磁致伸缩显著提高,而“跳跃”效应减弱。
The orientation of Tb <0.36Dy0.64 (Fe0.85Co0.15) 2 alloy rod with <110> orientation was prepared by zone melting directional solidification method. With a tube furnace, homogenization was performed at 1000 ° C for 4 hours, and the magnetic field was annealed at 240 kA / m in the axial direction of the vertical alloy rod. The effect of heat treatment on the orientation, microstructure and magnetostriction of the alloy was investigated. The results show that homogenization treatment and magnetic field annealing do not change the preferred orientation of the alloy axis. After homogenization treatment, the meshed rare earth - rich phase aggregates spherically, which effectively increases the magnetostriction of the alloy and enhances the effect of “jump” Magnetostrictive annealing treatment, the magnet magnetostriction in the absence of pre-stress significantly increased, and “jump ” effect weakened.