Evolution of magnetic properties and crystallographic texture in electrical steel with large plastic deformation


Autoria(s): FUKUHARA, M.; YONAMINE, T.; LANDGRAF, F. J. G.; MISSELL, F. P.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

17/04/2012

17/04/2012

2011

Resumo

Deformation leads to a hardening of steel due to an increase in the density of dislocations and a reduction in their mobility, giving rise to a state of elevated residual stresses in the crystal lattice. In the microstructure, one observes an increase in the contribution of crystalline orientations which are unfavorable to the magnetization, as seen, for example, by a decrease in B(50), the magnetic flux density at a field of 50 A/cm. The present study was carried out with longitudinal strips of fully processed non-oriented (NO) electrical steel, with deformations up to 70% resulting from cold rolling in the longitudinal direction. With increasing plastic deformation, the value of B(50) gradually decreases until it reaches a minimum value, where it remains even for larger deformations. On the other hand, the coercive field H(c) continually increases. Magnetometry results and electron backscatter diffraction results are compared and discussed. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3560895]

Identificador

JOURNAL OF APPLIED PHYSICS, v.109, n.7, 2011

0021-8979

http://producao.usp.br/handle/BDPI/14692

10.1063/1.3560895

http://dx.doi.org/10.1063/1.3560895

Idioma(s)

eng

Publicador

AMER INST PHYSICS

Relação

Journal of Applied Physics

Direitos

openAccess

Copyright AMER INST PHYSICS

Palavras-Chave #HYSTERESIS LOSS #SILICON STEEL #Physics, Applied
Tipo

article

proceedings paper

publishedVersion