Influence of Hot Rolling Reduction Rate on the Microstructure and Texture of a Strip Cast Fe-2.5 wt.% Si Non-oriented Electrical Steel

A 2.5 wt.% Si electrical steelElectrical steel was prepared based on the ultra-thin strip castingUltra-thin strip casting processProcess, and its magnetic properties are closely related to the materialMaterials's microstructureMicrostructure and textureTexture. Therefore, it is the focus of this paper to control the evolution of grain size and textureTexture by modulating the thermal processing parameters, so as to improve the magnetic properties. In this paper, we mainly study the effect of the hot rollingHot rolling reduction rateReduction rate (30–70%) on the microstructureMicrostructure and textureTexture. The results show that with the increase in the reduction rateReduction rate, the grain is gradually refined. The heavy reduction rateReduction rate (70%) increased the area fraction of Goss ({110}<001>) and γ-fiber textureTexture grains and decreased the grain size, which was mainly a result of recrystallizationRecrystallization. At lower reduction ratesReduction rate of 30%, the λ-fiber textureTexture is still inherited and deformation bands dominate within the grains.