卷取工艺对新型冷轧无取向电工钢热轧带组织的影响
Effect of Coiling Process on Microstructure of Hot-rolled Band of A New Cold-rolled Non-oriented Electrical Steel
胡冠桥1, 曾燕屏1, 陈海林1, 王立军2
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作者单位：(1. 北京科技大学 材料科学与工程学院, 北京 100083; 2. 北京科技大学 高效轧制国家工程研究中心, 北京 100083)
中文关键字：无取向电工钢； 卷取工艺； 晶粒尺寸； 析出相
英文关键字：non-oriented electrical steel; coiling process; grain size; precipitates
中文摘要：利用OM、SEM、TEM等实验方法研究了卷取工艺对一种新型含铜无取向电工钢晶粒度和析出相的影响。结果表明，该电工钢热轧带卷取后的晶粒尺寸为18～24 μm，在卷取过程中，热轧带中有一定数量的第二相析出，经EDS能谱及选区电子衍射分析，这些析出相主要为AlN。随着卷取工艺的变化，该电工钢的晶粒度大小变化不明显，析出相的类型、尺寸大小不发生改变，体积分数发生一定的改变。
英文摘要：The effects of coiling process on grain size and precipitates of a new copper-bearing non-oriented electrical steel were investigated by OM, TEM and other experimental method. The results show that the grain size of hot-rolled bands after coiling is 18～24 μm. The second phases precipitate during coiling process. They are mainly AlN by EDS spectra and selected area electron diffraction. With the change of coiling process, the grain size of the electrical steel does not change significantly; the type and size of precipitates do not change, but certain changes occur in the volume fraction.