The precipitate and texture are key factors in the crystallographic evolution, recrystallization behavior, and grain orientation distribution of the grain-oriented (GO) silicon steels. The retained precipitates and texture evolution of Bi dosage GO silicon steel during the hot rolling, normalization, cold rolling, and decarburization have been systematically studied with 0- to 25-ppm Bi content. The results show that the Bi dosage leads to the precipitation of fine AlN and the possible formation of (Bi-MnS) s, with a Bi-MnS pre-composite structure potentially forming. The precipitate size in the 12-ppm sample is the smallest, and the thermal stability is high. The 114 grains rotate around the ND axis to form a nearly 110 crystal nucleus, which is then consumed by Goss grains and undergoes selective abnormal growth. The γ fiber texture, (ND//), is prone to undergo geometric softening during the cold rolling, resulting in concentrated local plastic deformation and the formation of high-density shear bands, which have high stored energy and significant lattice distortion, providing preferred nucleation sites for Goss grains. Finally, the magnetic induction B 8 is achieved at 1. 78 T, and the iron loss is 1. 31 W/kg. There results provide guidance for achieving dual control between precipitation pinning and texture evolution with the Bi dosage.
Zhang et al. (Wed,) studied this question.