利用常用的轧制设备,采用热轧与冷轧及热处理相结合,提出了深度轧制工业纯铁和制备块体纳米晶工业纯铁的方法经X射线衍射(XRD)分析,深度轧制后的样品在300℃回复7 h,表层晶粒尺寸为38.9 nm;透射电镜(TEM)分析表明,板材内部的晶粒尺寸为87.5 nm.采用该方法可制备出大块、无孔隙缺陷的纳米晶工业纯铁,且晶粒的热稳定性较好.
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