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Surface decarburisation of steel detected by magnetic barkhausen emission

Lookup NU author(s): Mohamed Blaow, Emeritus Professor Terry Evans, Professor Brian Shaw

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Abstract

The effect of decarburisation of the surface layer on magnetic Barkhausen noise (MBN) emission was investigated in quenched and tempered steel containing 0.67% carbon. The MBN profile of intensity versus energising current from the un-decarburised material showed a single peak typifying the martensite structure. After decarburisation, a profile with a double peak was obtained. The presence of the decarburised layer produced a second, overlapping peak at a lower field value. The height of the second peak increased with increasing depth of decarburisation and its position moved to increasingly lower field values. © 2005 Springer Science + Business Media, Inc.


Publication metadata

Author(s): Blaow M, Evans JT, Shaw BA

Publication type: Article

Publication status: Published

Journal: Journal of Materials Science

Year: 2005

Volume: 40

Issue: 20

Pages: 5517-5520

Print publication date: 01/10/2005

ISSN (print): 0022-2461

ISSN (electronic): 1573-4803

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10853-005-4240-5

DOI: 10.1007/s10853-005-4240-5


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