Magnetic Barkhausen Noise in Quenched Carburized Nickel-Steels

Author

Monlevade, E.F. ; de Campos, M.F. ; Franco, F.A. ; Capo-Sanchez, J. ; Goldenstein, H. ; Padovese, L.R.

Author_Institution

Steel Div., Mangels Ind. S.A., Sao Bernardo do Campo, Brazil

Volume

48

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

1465

Lastpage

1468

Abstract

Two steel sheets, one with 5% Ni and another with 10% Ni, were submitted to carburization and quenching, obtaining a microstructure with martensite and retained austenite. These steels were characterized with magnetic Barkhausen noise (MBN). The Barkhausen signal is distinctively different for the carburized and quenched samples. The carburized and quenched samples present higher coercive field than the annealed samples. X-ray diffraction data indicated that the carburized and quenched samples have high density of dislocations, a consequence of the martensitic transformation.

Keywords

Barkhausen effect; X-ray diffraction; austenitic steel; coercive force; crystal microstructure; dislocation density; magnetic noise; martensitic steel; martensitic transformations; quenching (thermal); surface hardening; Barkhausen signal; X-ray diffraction data; austenitic steel; coercive field; dislocation density; magnetic Barkhausen noise; martensitic steel; martensitic transformation; microstructure; quenched carburized nickel-steels; steel sheets; Magnetic domain walls; Magnetic domains; Magnetic hysteresis; Magnetomechanical effects; Microstructure; Noise; Steel; Hysteresis; magnetic Barkhausen noise (MBN); martensite; nondestructive evaluation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2173666

Filename

6172426