探讨了880～900℃、910～930℃、940～960℃温度区间下1h回火处理对Nd30Dy3.5Al0.2B1合金显微组织和磁性能的影响.研究表明,温度低于910℃时,晶界富Nd带过厚且积聚,主相体积分数小,矫顽力、磁能积低;温度高于930℃时,晶粒尺寸过大,晶界面积变小, 晶界富Nd带加厚, 矫顽力、磁能积均下降;910～930℃时晶粒尺寸趋向均匀, 晶界富Nd带呈薄层状分布,磁性能最佳.
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