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采用电子背散射衍射技术对高硅钢近柱状晶初始组织直接热轧、温轧、冷轧和退火组织及织构演变进行分析,并测定相应退火板的磁性能.该实验条件下组织与织构演变规律体现了表层剪切细小组织和中心层粗大组织的竞争关系,其中中心层组织与原始立方取向相关或表现为α线取向.柱状晶的影响在最终退火组织中仍存在,少量立方取向区域可遗传到最终退火板中,虽然没有大量出现,仍有效削弱了{111}织构.形变退火过程中与原始立方取向线有关的晶粒尺寸普遍较大,有利于磁性.样品最终的磁感应强度低于文献报导的强{120}〈001〉或{100}〈021〉织构样品,但高于普通无取向高硅钢,且轧向和横向磁感应强度值差异小,所以柱状晶组织有利于无取向高硅钢的制备.
The structure of direct hot-rolled, warm-rolled, cold-rolled and annealed high-silicon near-columnar crystals was analyzed by electron backscatter diffraction and the magnetic properties of the corresponding annealed plates were determined. Under the experimental conditions, the microstructure and texture The evolution regularity shows the competitive relationship between the microstructure of the surface layer and the coarse structure of the central layer, in which the central layer structure is related to the original cubic orientation or shows the α-line orientation.The influence of the columnar crystal still exists in the final annealed structure, Can be inherited into the final annealed sheet, although not in large numbers, effectively weakened the {111} texture.The grain size associated with the original cubic orientation lines during deformation annealing is generally large, which is in favor of magnetism.The ultimate magnetic induction Which is lower than that of the strong {120} <001> or {100} <021> textured samples reported in the literature but higher than that of ordinary non-oriented high-silicon steel and the differences in the values of magnetic induction and strength in rolling direction and transverse direction are small. Preparation of high orientation silicon steel.