Magnetic Properties of Temper Rolled NO FeSi Steels With Enhanced Rotation Texture

In the present work, we have used an adjusted temper rolling process for development of particular textures {100} <; (0vw) in nonoriented (NO) FeSi steels. The main idea behind the improvement of soft magnetic properties relies on deformation induced grain growth and heat transport phenomena promoting the preferable formation of columnar grains with desired orientation. The vacuum degassed NO steels with silicon content 1% wt. taken from industrial line after final annealing were chosen as an experimental material. A columnar grained microstructure with pronounced intensity of rotating cube and Goss texture components was achieved during a dynamic final annealing. The obtained microstructural and textural state of sample leads to a significant reduction of coercivity. The coercivity values measured in DC and AC (50 Hz) magnetic field decreased from 70 A/m to 16 A/m and from 179 A/m to 65.4 A/m, respectively.