Fe-6.5 %(质量)Si合金具有优异的软磁性能,有着良好的发展前景.但由于该合金中有序相的出现,人们难以用普通轧制的方法得到该合金的薄板.本文利用热轧,温轧,冷轧方法,结合相关的热处理手段,得到该合金0.05 mm薄板.通过在不同温度下热处理,利用光学显微镜,扫描电镜,X射线仪,拉伸机,显微硬度仪,研究该薄板组织结构和力学性能的变化.利用磁滞回线仪研究薄板热处理前后直流磁性能的变化.通过研究发现,0.05 mm轧态薄板具有一定的塑性,断裂强度高达1.93 GPa.热处理使薄板硬度降低,塑性降低,特别是在650 ℃以上,材料发生了再结晶后,变化尤为明显.究其原因是有序相B2向DO3的转变及面织构的消失.
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