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利用XRD和EBSD研究了长轴分别平行于轧向(RD)、横向(TD)和轧面法向(ND)的柱状晶样品在热轧、冷轧及退火过程中的组织、织构演变规律,并分别从几何诱导和取向诱导两个方面分析了晶界的交互作用.结果表明,热轧时由表面摩擦剪切作用引起的组织和织构梯度直接影响并遗传给后续冷轧及退火样品.热轧后,不同样品的初始晶粒形状各向异性差异消失,形成相同的各向异性晶界组织,但晶体学各向异性发生改变,导致随后冷轧、退火组织及织构的变化均不同于直接冷轧的柱状晶样品.研究中特别关注了对磁性能有利的{100}取向区域与晶界的关系.
XRD and EBSD were used to study the microstructure evolution of the columnar grains with the major axis parallel to the rolling direction (RD), the transverse direction (TD) and the normal rolling surface (ND) during hot rolling, cold rolling and annealing , And the interaction between grain boundaries was analyzed respectively from geometric induction and orientation induction.The results show that the gradient of microstructure and texture induced by the surface frictional shearing during hot rolling directly affects and inherits to the subsequent cold rolled and annealed samples After hot rolling, the anisotropy of the initial grain shape of different samples disappeared to form the same anisotropic grain boundary structure, but the crystallographic anisotropy changed, which led to the subsequent cold rolling, the change of the annealed microstructure and texture Unlike the direct cold-rolled columnar crystals, special attention has been given to the relationship between the {100} orientation region and the grain boundaries that favor magnetic properties.