Effects of Initial Texture and Heat Treatment Process on the Texture Evolution and Magnetic Properties of Low Silicon Nonoriented Electrical Steel

This research focuses on 0.74 wt% silicon Nonoriented silicon steel, obtaining different initial texture samples from hot‐rolled sheets at sampling angles ranging from 0° to 75°. Furthermore, the evolution of microstructure and texture is observed throughout the entire process by combining five different annealing temperatures, including 780–980 °C. The results show that as the sampling angle increases, the components of the initial texture along the {110}<112>‐{110}<001> line tend to decrease, in particular, the texture of Goss decreased from 1.4% to 0.3%, while those along the {100}<011>‐{112}<111> line significantly increase once the angle exceeds 30°. Ultimately, among the samples from the same batch tested at θ = 30°, the performance is optimal, with iron loss P 15/50 reaching 4.57 W kg −1 , P 10/400 reaching 50.10 W kg −1 , and high‐frequency magnetic flux B 50 at 1.76 T. Based on this, the optimal annealing process parameters are determined to be 930 °C for 10 min. Current reserch provides new insights and processing routes for texture control and magnetic performance optimization of Nonoriented silicon steel.