低温热轧取向硅钢一次再结晶组织对磁性能的影响

The effect of primary recrystallization structure of low temperature hot roll oriented silicon steel on magnetic

采用EBSD技术对不同工艺处理的低温热轧取向钢的尺寸、取向差、CSL等进行了分析，结果表明：当大角度晶界占优时，磁性能较好，采用快速加热工艺有助于增大角度晶界所占的比例，采用渗氮工艺能提高功所占百分比并增大晶粒尺寸：25～45。取向差的晶粒所占比例较大时，磁性能较好．相比重位点阵（CSL）理论，高能晶界理论（HE）更符合本试验结果．

The grain size,misorientation, CSL of low temperature hot roll oriented silicon steel after different technologies are analysed by EBSD. The results show that： when the large angle boundaries dominate, the magnetic is better; the flash heat is helpful to the improvement of the proportion of the large boundary; Nitridation can improve the proportion of ∑9 and increase the grain size;when the proportion of the grains of 25 - 45° misorientation is larger, the magnetic is better. The high energy boumdary theory is more in line with the experimental results relative to CSL theory.