Comparison of the Magnetic Barkhausen Noise for Low Carbon Steel in Deformed and Annealed Conditions

Author

de Campos, Marcos F. ; da Silva, F.R.F. ; Lins, J.F.C. ; Monlevade, E.F. ; Campos, Manuel Alberteris ; Perez-Benitez, J. ; Goldenstein, H. ; Padovese, Linilson R.

Author_Institution

PUVR, Univ. Fed. Fluminense, Volta Redonda, Brazil

Volume

49

Issue

4

fYear

2013

fDate

Apr-13

Firstpage

1305

Lastpage

1309

Abstract

The magnetic Barkhausen noise (MBN) in low carbon steel (0.034%C) was examined for two situations: after deformation and after recrystalization. The steel sheets previously received 50% of cold rolling and were heat treated for time periods between 15 to 540 min, originating different grain sizes. It was found that the maximum amplitude of MBN decreases with annealing time. Electron back scattered diffraction (EBSD) shows that significant grain fragmentation occurred due to plastic deformation. The results are discussed with help of the Two Gaussian model for the MBN envelope. The major contribution for MBN in the deformed sample was elimination of 90^° closure domains. Displacement of 180^° domain walls was limited in the deformed sample, due to the grain fragmentation.

Keywords

Barkhausen effect; annealing; carbon steel; cold rolling; electron backscattering; grain size; magnetic domain walls; magnetic noise; plastic deformation; recrystallisation; sheet materials; EBSD; MBN envelope; annealed condition; annealing time; cold rolling; deformed condition; domain walls; electron backscattered diffraction; grain fragmentation; grain size; low carbon steel; magnetic Barkhausen noise; plastic deformation; recrystallization; steel sheets; time 15 min to 540 min; two Gaussian model; Annealing; Grain size; Magnetic domain walls; Magnetic domains; Magnetomechanical effects; Noise; Steel; Deformed structure; EBSD; grain size; magnetic Barkhausen noise; nondestructive evaluation; steels;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2231871

Filename

6374681