磁-热耦合退火对CGO钢Goss晶粒取向度的影响

Effect of magneto-thermal coupling annealing on Goss grain orientation of CGO steel

采用实验室自主研发的磁-热耦合处理装置,利用X射线衍射仪和磁性能测量仪对不同参数磁-热耦合拉伸平整退火后的CGO钢组织、Goss取向晶粒偏差角以及磁性能进行检测分析。结果表明,磁-热耦合退火能够促进CGO钢拉伸平整过程中晶粒长大,同时减小Goss取向晶粒偏差角最大值,从而改善其磁性能。在750℃下施加12 mT磁场时,磁-热耦合退火作用效果最为显著,Goss取向晶粒偏差角最大值较未施加磁场时减小2.76°,铁损值降低,磁感应强度提高。

Microstructure,misorientation of Goss oriented grain and magnetic properties of the CGO steel after magneto-thermal coupling tensile leveling annealing under different parameters were investigated and analyzed by means of self-made magnetic-thermal coupling device,X-ray diffractometer and magnetic measuring instrument.The results show that the magneto-thermal coupling annealing can promote the grain growth in the CGO steel and reduce the maximum misorientation of Goss orientated grain,thus improving the magnetic properties.By employing magnetic field with intensity of 12 mT at 750℃,the effect of magneto-thermal coupling annealing is the most significant,the maximum misorientation of Goss orientated grain is reduced by 2.76°compared with that without magnetic field,the iron loss value is reduced and the magnetic induction intensity is increased.