Bi Mn过共晶合金分别从3个不同状态凝固,合金中MnBi析出相均在磁场作用下以晶体的c轴平行磁场取向,形成规则排列组织,并且所得材料的剩磁都具有明显的各向异性。合金从低于355℃的固液两相区凝固时,铁磁性MnBi析出相在1.0T磁场中迅速形成均布的织构组织,并能在无磁场条件下保持稳定,材料无需热处理就有很好的剩磁性能。因此,磁场凝固技术能够高效率地、直接制备出性能优良的MnBi/Bi磁性功能复合材料。 Bi Mn hypereutectic alloys were respectively solidified from three different states. The precipitates of MnBi in the alloys were all oriented in the parallel magnetic field of the c-axis of the crystal under the action of a magnetic field to form a regular arrangement of the structures, and the remanence of the obtained material all had obvious directions opposite sex. When the alloy solidifies from the solid-liquid two-phase region below 355 ℃, the ferromagnetic MnBi precipitates rapidly form a uniform texture in a 1.0T magnetic field and remain stable without magnetic field. Good remanence performance. Therefore, the magnetic field solidification technology can efficiently and directly prepare the MnBi / Bi magnetic functional composite with excellent properties.