采用显微硬度计、光学显微镜、X射线衍射仪等手段,对经复合方法及热轧工艺制备的高硅钢薄板(覆层为Fe-3％ Si,芯层为Fe-10％ Si)进行不同工艺的热处理,研究其软化行为,并通过温轧实验进行验证.结果表明:经850℃保温1h,采用盐水冷的热处理工艺可使得复合板综合硬度最低;晶粒大小不是高硅钢复合板软化的主要原因;B2相的出现,使得材料的有序度下降,从而造成复合板芯层硬度的降低,同时急冷还可导致材料的芯层出现B20相.经热处理工艺后在720℃下温轧可获得表面质量良好、厚度为0.45 mm的薄板,高温扩散后整体Si元素含量为6.2％.
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