Influence of cubic texture intensity of hot rolled ferritic non-oriented electrical steels on the microstructure and texture in the final processed material

Abstract

Abstract. The magnetic properties of non-oriented electrical steels are determined by the microstructure and texture of the material. Besides optimum grain size (microstructure) for low values of specific magnetic losses, a high intensity of θ-fibre texture and low intensity of γ-fibre and α-fibre texture is desirable. Each of the processing steps influences the intensity of the θ-fibre in the final processed material. In this paper the interplay of the various processing steps on the intensity of the θ-fibre is regarded for ferritic Iron-Silicon steels with 2.4 wt.% Si and 3.0 wt.% Si.

Evolution and Interaction of the Microstructure and Texture at the Different Processing Steps for Ferritic Nonoriented Electrical Steels

“…Although generally cold rolling leads to an increase of the intensity of the α-and γ-fiber texture, a higher intensity of the θ-fiber texture after hot rolling leads also to a higher cube fiber texture after cold rolling, as demonstrated in [2], [7], [20]. As seen from the Fig.…”

Methods for texture improvement in electrical steels

“…The strong interest nowadays for improving texture in electrical steels can be noted by a significant number of recent studies focusing on texture [28], [42], [45], [46], [47], [48].…”

Deformation Structure and Recrystallization of Ferritic FeSi Steels

“…High permeability and low loss material grades are mostly obtained commercially by an additional hot band annealing at temperatures mostly above 900 °C before cold rolling. This additional processing step may be avoided by modifying the cooling and coiling after hot rolling in an appropriate . The thermal treatment after the last pass of hot rolling can be arranged in such a way that preferable texture intensities like in the case of a separate hot strip annealing before cold rolling are obtained.…”

“…This additional processing step may be avoided by modifying the cooling and coiling after hot rolling in an appropriate. [1][2][3] The thermal treatment after the last pass of hot rolling can be arranged in such a way that preferable texture intensities like in the case of a separate hot strip annealing before cold rolling are obtained. This comprises an optimal combination of the finishing temperature at hot rolling with a temperature -time cycles at cooling before coiling.…”