TY - JOUR
T1 - Micromagnetic characterization of operation-induced damage in Charpy specimens of RPV steels
AU - Rabung, Madalina
AU - Kopp, Melanie
AU - Gasparics, Antal
AU - Vértesy, Gábor
AU - Szenthe, Ildikó
AU - Uytdenhouwen, Inge
AU - Szielasko, Klaus
N1 - Score=10
PY - 2021/3/24
Y1 - 2021/3/24
N2 - 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.
AB - 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.
KW - Neutron irradiation embrittlement
KW - Reactor pressure vessel
KW - Magnetic nondestructive evaluation
KW - Micromagnetic multiparameter microstructure and stress analysis 3MA
KW - Magnetic adaptive testing
UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/43583214
U2 - 10.3390/app11072917
DO - 10.3390/app11072917
M3 - Article
SN - 2076-3417
VL - 11
SP - 1
EP - 19
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
M1 - 2917
ER -