Abstract
Single crystal sheets of a 3% silicon-iron alloy were cold rolled in approximately (100) [001] orientation to 50 and 70% reductions in thickness. The cold rolling and annealing textures were observed. The behavior of crystal during rolling depends on the degree of slight asymmetry in the initial orientation. A clockwise rotation about the [110] axis occurs in the 50% rolled crystal, while both clockwise and counterclockwise rotations about the sheet normal are observed in the 70% rolled crystal. The primary recrystallization texture of the 50% rolled crystal consists of one preferred orientation, which can be derived from the deformation texture by a counterclockwise rotation of approximately 25° about the [110] axis. Four components of the primary recrystallization texture of the 70% rolled crystal can be related to two components of the deformation texture by rotations of 25° about the [110] and [1\bar10] axes. In agreement with Hsun Hu’s proposition, the results can be interpreted on the basis of the oriented growth theory, in which, however, the growth velocity of a recrystallized grain is supposed to be determined by the directional arrangement of imperfections in the deformed matrix. A selective growth of grains oriented near (100) [001] occurs by the secondary recrystallization on annealing the 70% rolled crystal above 850°.
