论文部分内容阅读
对Fe72Y6822非晶合金的晶化行为和软磁性能进行了研究.分子动力学模拟结果显示,合金熔体中的团簇结构主要为<0,3,6,0>型多面体;实验结果显示,在合金的退火样品中存在由冠状三棱柱组成的网状结构.这种网状结构可提高合金在过冷液相区的热稳定性,抑制合金的晶化,改变合金的晶化方式,促进纳米α-Fe晶粒的形成.适当的退火工艺可以提高Fe72Y6822非晶合金的软磁性能.合金饱和磁化强度和矫顽力的变化是由于晶化过程的不同阶段析出纳米晶oc-Fe相、顺磁性的YB12相和弱磁性的Fe3B相所致.
The crystallization behavior and soft magnetic properties of Fe72Y6822 amorphous alloy have been studied. The molecular dynamics simulation results show that the cluster structure in the alloy melt is mainly <0,3,6,0> type polyhedron. The experimental results show that, In the annealed samples, there is a network structure composed of coronal triangular prism, which can improve the thermal stability of the alloy in the supercooled liquid region, inhibit the crystallization of the alloy, change the crystallization mode of the alloy, and promote The formation of nano-α-Fe grains.Appropriate annealing process can improve the soft magnetic properties of Fe72Y6822 amorphous alloy.The change of saturation magnetization and coercive force of the alloy is due to the oc-Fe phase precipitated nanocrystalline at different stages of the crystallization process, Paramagnetic YB12 phase and weak magnetic Fe3B phase due.