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Open AccessArticle

Micromagnetic Characterization of Operation-Induced Damage in Charpy Specimens of RPV Steels

1
Fraunhofer Institute for Nondestructive Testing (IZFP), 66123 Saarbrücken, Germany
2
Centre for Energy Research, 1121 Budapest, Hungary
3
SCK CEN Belgian Nuclear Research Centre, 2400 Mol, Belgium
*
Author to whom correspondence should be addressed.
Academic Editors: Jinyi Lee and Hoyong Lee
Appl. Sci. 2021, 11(7), 2917; https://doi.org/10.3390/app11072917
Received: 29 January 2021 / Revised: 19 March 2021 / Accepted: 20 March 2021 / Published: 24 March 2021
(This article belongs to the Special Issue Novel Approaches for Nondestructive Testing and Evaluation)
The embrittlement of two types of nuclear pressure vessel steel, 15Kh2NMFA and A508 Cl.2, was studied using two different methods of magnetic nondestructive testing: micromagnetic multiparameter microstructure and stress analysis (3MA-X8) and magnetic adaptive testing (MAT). The microstructure and mechanical properties of reactor pressure vessel (RPV) materials are modified due to neutron irradiation; this material degradation can be characterized using magnetic methods. For the first time, the progressive change in material properties due to neutron irradiation was investigated on the same specimens, before and after neutron irradiation. A correlation was found between magnetic characteristics and neutron-irradiation-induced damage, regardless of the type of material or the applied measurement technique. The results of the individual micromagnetic measurements proved their suitability for characterizing the degradation of RPV steel caused by simulated operating conditions. A calibration/training procedure was applied on the merged outcome of both testing methods, producing excellent results in predicting transition temperature, yield strength, and mechanical hardness for both materials. View Full-Text
Keywords: neutron irradiation embrittlement; reactor pressure vessel; magnetic nondestructive evaluation; micromagnetic multiparameter microstructure and stress analysis 3MA; magnetic adaptive testing neutron irradiation embrittlement; reactor pressure vessel; magnetic nondestructive evaluation; micromagnetic multiparameter microstructure and stress analysis 3MA; magnetic adaptive testing
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MDPI and ACS Style

Rabung, M.; Kopp, M.; Gasparics, A.; Vértesy, G.; Szenthe, I.; Uytdenhouwen, I.; Szielasko, K. Micromagnetic Characterization of Operation-Induced Damage in Charpy Specimens of RPV Steels. Appl. Sci. 2021, 11, 2917. https://doi.org/10.3390/app11072917

AMA Style

Rabung M, Kopp M, Gasparics A, Vértesy G, Szenthe I, Uytdenhouwen I, Szielasko K. Micromagnetic Characterization of Operation-Induced Damage in Charpy Specimens of RPV Steels. Applied Sciences. 2021; 11(7):2917. https://doi.org/10.3390/app11072917

Chicago/Turabian Style

Rabung, Madalina; Kopp, Melanie; Gasparics, Antal; Vértesy, Gábor; Szenthe, Ildikó; Uytdenhouwen, Inge; Szielasko, Klaus. 2021. "Micromagnetic Characterization of Operation-Induced Damage in Charpy Specimens of RPV Steels" Appl. Sci. 11, no. 7: 2917. https://doi.org/10.3390/app11072917

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