Analysis of the plastic deformation influence on hysteresis loop in non oriented electrical steel

This paper discusses about the effect of plastic deformation on the energy dissipated by hysteresis, remanent induction and coercive field in non oriented electrical steel. Magnetic characterization was performed under quasi-static regime at 5 mHz for various maximum induction values. The results showed that both the energy dissipated and coercive field varied linearly with the square root of the true deformation. The hysteresis loss subdivision indicated beside that domain walls pinning by dislocations, residual stress also contribute to energy dissipation. The remanent induction decreased with the evolution of plastic deformation.