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Measurement of the magnetic properties of P9 and T22 steel taken from service in power station

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Wilson, J. W., Karimian, N., Liu, Jun, Yin, W., Davis, Claire and Peyton, A. J. (2014) Measurement of the magnetic properties of P9 and T22 steel taken from service in power station. Journal of Magnetism and Magnetic Materials, 360 . pp. 52-58. doi:10.1016/j.jmmm.2014.01.057

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2014.01.057

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Abstract

With the UK׳s aging power generation network, life-extension of steel plant components is a critical issue. However, in order to evaluate the likelihood of component failure, techniques must be developed to properly assess the level of degradation in power station steels. Electromagnetic inspection has the potential to quantify the level of degradation through in-situ measurements at elevated temperatures. This paper reports the results of tests carried out on thermally treated P9 and T22 steel samples with different microstructural states using major and minor B–H loop measurements and magnetic Barkhausen noise measurements. The results show that by careful selection of minor loop parameters, specific to the material under inspection and the material change under consideration, correlations can established between EM properties and material properties such as Vickers hardness. These results will be used as a basis for the further development of a fully field deployable device.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Electric power-plants, Electromagnetic noise, Steel -- Permeability, Hysteresis
Journal or Publication Title: Journal of Magnetism and Magnetic Materials
Publisher: Elsevier Science BV
ISSN: 0304-8853
Official Date: June 2014
Dates:
DateEvent
June 2014Published
30 January 2014Available
24 October 2013Submitted
Volume: 360
Page Range: pp. 52-58
DOI: 10.1016/j.jmmm.2014.01.057
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP//H022937

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