Abstract
Texture evolution by grain growth in the presence of precipitates of MnS and AlN in Fe-3%Si alloy has been investigated by SEM-ECP technique. The two texture groups A and B are evolved by grain growth from the primary texture (grain diameter of 6 μm) composed mainly of {111}⟨112⟩. The group A (gtain diameter of 2600 μm) is mainly composed of the Goss orientation and its rotated orientations of about 0.26 to 035 rad around the ND axis, while the group B (grain diameter of 700 μm) had the intensity level of about one-fifth of that of the group A and has near {112}⟨110⟩ orientations. The group A has a low intensity of Σ1 and has either the highest frequency of Σ9 or a higher value of the product of its intensity and the intensity of Σ9 in the primary texture. The group B has a higher intensity of Σ1 and a higher value of the product of its intensity and the intensity of Σ9 in the primary texture. The mechanism of the texture evolution mentioned above can be explained in terms of the preferential migration of Σ9 boundaries in the presence of the precipitates and under the inhibitor effect of grain boundary migration by Σ1 boundaries.
