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Fe-6.5wt%Si合金具有优异的软磁性能,但由于有序相的出现,室温塑性低,很难用传统的轧制方法制备薄板。研究了一种特殊的轧制方法和相应的热处理工艺,冷轧出了厚度为0.03～0.05mm的该合金薄板。在制备过程中,通过观察热处理前后材料显微组织,硬度和结构的变化,研究热处理对材料塑性的影响;通过观察冷轧薄板热处理前后磁性能的变化,研究热处理对磁性能的影响。研究表明,通过采取不同的热处理手段,可以抑制部分有序相的生成,提高材料塑性或者生成有序相,提高材料磁性能。
Fe-6.5wt% Si alloys have excellent soft magnetic properties, but due to the presence of ordered phases, low plasticity at room temperature, it is difficult to prepare sheets by conventional rolling methods. A special rolling method and the corresponding heat treatment process were studied. The alloy sheet was cold rolled out to a thickness of 0.03 ~ 0.05mm. The influence of heat treatment on the plasticity of the material was studied by observing the changes of microstructure, hardness and structure before and after heat treatment. The influence of heat treatment on the magnetic properties was studied by observing the changes of magnetic properties before and after heat treatment. The results show that by adopting different heat treatment methods, it is possible to suppress the formation of some ordered phases, improve the plasticity of materials or generate ordered phases, and improve the magnetic properties of materials.