Abstract: Microstructure and texture evolution in the whole production process of non-oriented silicon steel containing rare earth were studied by means of optical microscope, X-ray diffractometer and scanning electron microscope. The results show that the hot-rolled sheet has significant delamination in the thickness direction, that is, the recrystallized layer of the surface layer, the transition layer, and the deformed structure layer of the intermediate layer, and the texture mainly includes copper-type and brass-type texture. After normalizing, the grains are completely recrystallized, and the texture type is basically unchanged from that of hot rolling, but the strength is weakened; the texture after two cold rolling is all fibrous, forming a texture type dominated by α and γ linear textures. There are also high-strength anti-Gaussian textures such as {001}<110>, {112}<110>, {111}<110>; partial recrystallization occurs after decarburization annealing, and the α and γ linear texture strength is reduced comparing to that after cold rolling; during the high temperature annealing stage, the crystal grains recrystallize, there are {111}<112>, {111}<110> mainly γ texture, and {100}<001> texture.

Key words: new energy vehicle, non-oriented silicon steel, texture, high strength