Abstract
As a critical factor for the magnetic properties of grain-oriented silicon steel, the orientation accuracy of shear bands is closely related to the matrix orientation deviation from {111}<112>. This work investigates the orientation rotation of shear bands in {111}<112> matrices with various types of deviation during cold rolling, using a visco-plastic self-consistent model that incorporates a two-dimensional inclined angle of the shear band dependent on matrix orientation. When the matrix orientation deviates from {111}<112> along φ(1), φ(2), or both axes, the φ(1) deviation of the shear band decreases, and the φ(2) deviation is larger than φ(1). Compared with a uniaxially deviated {111}<112> matrix, a biaxially deviated matrix along φ(1) and φ(2) axes produces a higher shear band deviation from Goss due to the increased φ(2) deviation. This suggests that improving the orientation accuracy of the shear band is necessary to decrease the matrix deviation from {111}<112> in the φ(1) and especially φ(2) axes.