Abstract:
The microstructure and texture of high grade non-oriented electrical steel samples before and after annealing prepared by four different processing routes were compared by EBSD.The magnetic properties of the samples were tested.The effects of processing route on the magnetic properties of the samples were investigated.The results show that the texture of samples after annealing is strongly influenced by that after cold rolling, especially the γ-fiber and α-fiber are inherited no matter component or intensity.The highest magnetic induction is obtained in the samples with normalizing and two-stage rolling, which are featured by the weakest texture of γ-fiber and the strongest texture of η-fiber.However, the lowest core loss is obtained in the samples after two-stage rolling without normalizing, which are featured by the biggest grain size, the microstructure is more homogeneous than that of the samples with normalizing and two-stage rolling, due to the strong η-fiber and weak γ-fiber, the magnetic induction ranks second only to that of the samples with normalizing and two-stage rolling.