磁场预退火处理对CGO钢组织与织构的影响

对含3.12%Si的CGO取向硅钢进行不同的脉冲磁场预退火处理,并通过光学显微镜和XRD技术分析取向硅钢的组织及织构的变化。结果表明:在施加脉冲磁场对取向硅钢进行预退火处理后,试样的平均晶粒尺寸都得到了不同程度的细化,组织分布均匀;通过对ODF图与取向线的分析可知,脉冲磁场对有利织构{111}<112>的促进作用明显,尤其在退火温度为760~800 ℃时,施加脉冲磁场的磁场强度为20 mT,加磁时间为1 min时的效果最好。

Effect of magnetic field pre-annealing on microstructure and texture of CGO steel

CGO oriented silicon steel with 3.12%Si was pre-annealed in the different pulsed magnetic fields, and the microstructure and texture of the steel were analyzed by means of metalloscope and XRD. The results show that the average grain size of the oriented silicon steel is refined and the microstructure distribution is uniform after the pre-annealing treatment with pulse magnetic field. Based on the analysis of the ODF map and orientation line, it can be seen that the pulse magnetic field pre-annealing has a significant promoting effect on the favorable texture of {111}<112>, especially when the annealing temperature is 760-800 ℃ and the pulsed magnetic fieldintensity is 20 mT and the magnetic time is 1 min, the best effect can be obtained.