对低温法生产的以AlN为主抑制剂的 Hi-B取向硅钢高温退火过程进行了中断实验,借助 EBSD及TEM技术对高温退火连续升温过程中织构与析出物的演变进行了研究。实验结果表明,800℃时 ODF图出现高斯织构组分,但强度很弱,高斯晶粒偏离角在10°以上；950~1000℃时高斯晶粒异常长大,偏离角3~6°；高温退火过程析出物主要有球形、规则立方形及不规则多面体形3种形貌,由于渗 N 的影响,Zener 因子先增大再减小,并且析出物在高斯晶界前沿优先粗化。
The annealing process at high temperature of Hi-B silicon steel using low slab reheat temperature and with AlN as the inhibitor has been studied by interrupting test,and the evolution of texture and precipitates dur-ing continuous heating-up in the annealing process at high temperature was analyzed by EBSD and TEM.The results showed that Goss texture appears in ODF at 800 ℃,but the intensity of Goss texture was very weak and the deviation angle was more than 10°.Goss grains grow abnormally during 950-1 000 ℃,and the deviation an-gles range from 3 to 6°.There were three different types of particles,the spherical,the small cubic and the pol-yhedron block.The Zener factor increased at first,then decreased due to the nitridization,and the precipitates were first coarsened in the front of Goss grain boundaries.
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