退火温度对0.5 % Si无取向硅钢组织、织构及磁性能的影响#br#

在实验室条件下探索了0.5 % Si无取向硅钢冷轧后退火温度对其组织、织构演变及磁性能的影响。结果表明，当退火温度从675 ℃提高到725 ℃时，再结晶率逐渐增加，725 ℃时完全再结晶。随着退火温度从725 ℃升到850 ℃，平均晶粒尺寸从18.2 μm增加到40.2 μm。随着退火温度从675 ℃提高到850 ℃，P1.5/50从10.5 W/kg降低到4.6 W/kg。当退火温度从675 ℃提高到725 ℃时，由于再结晶率增加，磁感逐渐增加。当退火温度从725 ℃升到850 ℃时，不利的{111}取向晶粒面积分数由35.8 %增加至40.4 %，有利的{001}和Goss取向晶粒面积分数由14.8 %降低到12.8 %，从而使B50从1.76 T降低至到1.74 T。因此，需要选择合适的退火温度以获得较低的铁损与较高的磁感。

Effect of annealing temperature after cold rolling on microstructure,textureand magnetic properties of 0.5 % Si non-oriented silicon steel#br#

The effect of annealing temperature after cold rolling on the microstructure, texture evolution and magnetic properties of 0.5 % Si non-oriented silicon steel was investigated under laboratory conditions. The results showed that the increase of the annealing temperature from 675 ℃ to 725 ℃ was conducive to the increase of the recrystallization rate , and the recrystallization was completed at 725 ℃. The average grain size was increased from 18.2 μm to 40.2 μm with the increase of annealing temperature from 725 ℃ to 850 ℃. Therefore, P1.5/50 was decreased from 10.4 W/kg to 4.5 W/kg with the increase of annealing temperature from 675 ℃ to 850 ℃. When the annealing temperature increased from 675 ℃ to 725 ℃, the magnetic induction increased gradually due to the increase of recrystallization rate. By contrast, with the increase of annealing temperature from 725 ℃ to 850 ℃, the volume fraction of {111} grains was increased from 35.8 % to 40.4 %, and the beneficial {001} and that of the Goss grains was decreased from 14.8 % to 12.8 %, thus reducing B50 from 1.76 T to 1.74 T. Therefore, It is necessary to select the appropriate annealing temperature to obtain the properties of lower iron loss and higher magnetic induction.