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Inspection of Reactor Steel Degradation by Magnetic Adaptive Testing

1
Hungarian Academy of Sciences, Centre for Energy Research, 1121 Budapest, Hungary
2
SCK•CEN Belgian Nuclear Research Centre, 2400 Mol, Belgium
*
Author to whom correspondence should be addressed.
Materials 2019, 12(6), 963; https://doi.org/10.3390/ma12060963
Received: 25 February 2019 / Revised: 12 March 2019 / Accepted: 18 March 2019 / Published: 22 March 2019
(This article belongs to the Special Issue Non-destructive Inspection)
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Abstract

Degradation of nuclear pressure vessel steel materials, 15Kh2NMFA type and A508 Cl2 type (definition is given in the text) were investigated by a novel magnetic nondestructive testing method, so-called Magnetic Adaptive Testing (MAT), which is based on systematic measurement and evaluation of minor magnetic hysteresis loops. The measured samples were thermally treated by a special step cooling procedure, which generated structural changes in the material. It was found that this type of degradation can be easily followed by magnetic measurements. Charpy impact test were also performed and the results were compared with the magnetic parameters. In case of 15Kh2NMFA steel, a good, reliable and closely linear correlation was found between magnetic descriptors and transition temperature. View Full-Text
Keywords: steel degradation; nuclear reactor pressure vessel; magnetic nondestructive evaluation; magnetic adaptive testing steel degradation; nuclear reactor pressure vessel; magnetic nondestructive evaluation; magnetic adaptive testing
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Vértesy, G.; Gasparics, A.; Szenthe, I.; Gillemot, F.; Uytdenhouwen, I. Inspection of Reactor Steel Degradation by Magnetic Adaptive Testing. Materials 2019, 12, 963.

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