【作者】 张涛； 张兴国； 贾非； 吴楠楠； 张伟；

【Author】 ZHANG Tao,ZHANG Xing-guo,JIA Fei,WU Nan-nan,ZHANG Wei (School of materials science and engineering,Dalian university of Technology,Dalian 116024,China)

【机构】 大连理工大学材料科学与工程学院；

【摘要】 利用强磁场对非晶合金Fe_56.25Pt_18.75B₂₅的晶化过程进行了研究。施加磁场范围是0～10T,施加磁场的方向为薄带面的垂直方向,热处理的温度范围是673～873K。利用差热分析、X射线衍射和热磁分析的方法分析了样品的热稳定性和相组成及热磁特性。利用X射线衍射的数据计算得到了样品的平均晶粒尺寸。强磁场的施加有效细化了非晶合金结晶析出相。更多还原

【Abstract】 The crystallization of melt-spun Fe-Pt-B amorphous alloy in steady high magnetic field(HMF) was investigated.The intensity of the applied magnetic field is 0-10 T along with the ribbons annealed at temperatures ranging from 673 to 873K.The direction of the performed magnetic field is perpendicular to the direction of surface of the ribbons.The thermal magnetic properties of the samples were obtained by thermal magnetic gravity analysis.The phase transformations of Fe-Pt-B amorphous alloy on heating with and without the steady HMF were studied by X-ray diffractometry.The average grain size of the samples annealed in HMF was calculated from the X-ray diffraction patterns.The HMF was thought to be effective on the refinement of nanograins which were produced by the crystallization of the amorphous ribbon.更多还原