Abstract
Texture control of grain-oriented silicon steel is the key factor to ensure the magnetic properties of the finished product. Nb-containing grain-oriented silicon steel with different slab reheating temperatures was hot rolled followed by single-stage or two-stage cold rolling, and the textures were also analyzed. In the single-stage cold rolling process, as the slab reheating temperature is reduced, the intensity of the rotating cube texture {100}<011> and Goss texture {011}<100> drops, and that of the {111}<112> texture increases. In the two-stage cold rolling process, with the decrease in the slab reheating temperature, the intensity of the {111}<112> texture increases from 4.958 to 6.809. At the same slab reheating temperature, the intensity of the rotating cube texture declines more significantly in the two-stage cold rolling process. Finally, two-stage cold rolling with the slab reheating temperature of 1220 °C is found to be more beneficial for the formation of a sharp Goss texture during the second recrystallization. The magnetic induction intensity B800 of the final product is 1.87 T, and the iron loss P1.7/50 is 1.36 W/kg.
Highlights
Nb-Containing Grain-OrientedGrain-oriented silicon steel, which is mainly used as the core material in electrical transformers and high-rating generators, is an indispensable and important functional material in the fields of electronics, the electric power industry, and the military industry
It is characterized by a sharp {110} preferred crystallographic orientation referred to as the Goss texture
Grain-oriented silicon steel goes through a series of special processes that are different from other steel products, which achieves the sharp Goss ({110})
Summary
Grain-oriented silicon steel, which is mainly used as the core material in electrical transformers and high-rating generators, is an indispensable and important functional material in the fields of electronics, the electric power industry, and the military industry. It is characterized by a sharp {110} preferred crystallographic orientation referred to as the Goss texture. Strict rolling processes and inhibitors that have an excellent inhibition effect work together to control the orientation of the Goss texture [6,7,8,9]. To improve the dispersity of precipitates, the inhibitor needs to be completely dissolved in the matrix during slab heating, and the growth rate is small at the precipitation temperature [10,11,12,13]
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