Magnetic Barkhausen Noise in Quenched Carburized Nickel-Steels

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 c...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-04, Vol.48 (4), p.1465-1468
Main Authors: Monlevade, E. F., de Campos, M. F., Franco, F. A., Capo-Sanchez, J., Goldenstein, H., Padovese, L. R.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Hysteresis
magnetic Barkhausen noise (MBN)
Magnetic domain walls
Magnetic domains
Magnetic hysteresis
Magnetomechanical effects
martensite
Materials science
Microstructure
Noise
nondestructive evaluation
Other topics in materials science
Physics
Steel
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Summary: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.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2011.2173666