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采用单辊快淬法制备Fe80Zr10B10非晶合金,并对该合金进行不同温度及不同保温时间热处理。利用X射线衍射仪(XRD)、透射电镜(TEM)和振动样品磁强计(VSM)对合金的晶化过程和磁性能进行测试分析。结果表明:Fe80Zr10B10非晶合金经550℃退火保温不同时间,仅析出α-Fe相。经600℃退火,保温1 min后晶化产物为α-Fe相和χ相(α-Mn型相),χ相为亚稳相,随保温时间延长,χ相转变为α-Fe相。经650℃退火,保温1 min的晶化产物为Laves C14(λ)相,随保温时间增加,λ相向α-Fe相转变,并伴有Fe3Zr相和Fe2Zr相析出。合金经550℃退火,矫顽力(Hc)随保温时间的延长变化不大,比饱和磁化强度(Ms)逐渐增大。600℃退火,矫顽力(Hc)在合金保温10 min后达到最大值然后减小,比饱和磁化强度(Ms)在合金保温10 min后达到最小值,然后增大。650℃退火,矫顽力(Hc)随保温时间的增加而减小,比饱和磁化强度(Ms)逐渐增大。
The Fe80Zr10B10 amorphous alloy was prepared by single roller quenching method and the alloy was heat-treated at different temperatures and different holding time. The crystallization process and magnetic properties of the alloy were tested by X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The results show that the Fe80Zr10B10 amorphous alloy is annealed at 550 ℃ for different time and only precipitates α-Fe phase. After annealing at 600 ℃ for 1 min, the crystallized products were α-Fe phase and χ-phase (α-Mn phase), and the χ phase was metastable phase. With prolonged holding time, χ phase turned into α-Fe phase. After annealing at 650 ℃ for 1 min, the crystallization products are Laves C14 (λ) phase. With the increase of holding time, λ phase changes to α-Fe phase, accompanied by the precipitation of Fe3Zr phase and Fe2Zr phase. After annealing at 550 ℃, the coercive force (Hc) did not change much with the holding time, and the specific saturation magnetization (Ms) increased gradually. After annealing at 600 ℃, the coercive force (Hc) reached the maximum value and then decreased after the alloy was incubated for 10 min. The specific saturation magnetization (Ms) reached the minimum value after the alloy was incubated for 10 min and then increased. Annealing at 650 ℃, the coercive force (Hc) decreases with the increase of holding time, and increases more than the saturation magnetization (Ms).