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Improved Processing Technique for Preparation of Non-Oriented Electrical Steels with Low Coercivity

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Petryshynets I., Kovac F., Marcin J., Škorvanek I.

vol. 126

issue 1

182-183

In order to improve soft magnetic properties of vacuum degassed NO steels, an adjusted temper rolling process for development of particular textures {100}<0vw> was used. The main idea here relies on a deformation-induced grain growth, which promotes preferable formation of the grains with desired orientation. Two vacuum degassed NO steels were chosen as an experimental material. In both cases, a coarse or columnar grained microstructure, with pronounced intensity of cube and Goss texture components, was achieved during a continuous final annealing. The obtained microstructure leads to a significant decrease of coercivity, measured in DC magnetic field. The coercivity of steel with silicon content 2.4 wt.% decreased from 42 A/m to 17 A/m. Even more remarkable improvement of the soft magnetic properties was observed for the steel with Si 0.6 wt.%, where the coercivity value dropped from 68 A/m to 12.7 A/m.

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1 Acta Physica Polonica A

1 2014

1 Kovac F.

1 Marcin J.

1 Petryshynets I.

1 Škorvanek I.

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Improved Processing Technique for Preparation of Non-Oriented Electrical Steels with Low Coercivity