Nondestructive investigation of neutron irradiation generated structural changes of reactor steel material by magnetic hysteresis method
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Nondestructive investigation of neutron irradiation generated structural changes of reactor steel material by magnetic hysteresis method. / Vértesy, Gábor; Gasparics, Antal; Uytdenhouwen, Inge; Szenthe, Ildikó; Gillemot, Ferenc; Chaouadi, Rachid.
In: Metals, Vol. 10, 642, 15.05.2020, p. 1-11.Research output: Contribution to journal › Article
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T1 - Nondestructive investigation of neutron irradiation generated structural changes of reactor steel material by magnetic hysteresis method
AU - Vértesy, Gábor
AU - Gasparics, Antal
AU - Uytdenhouwen, Inge
AU - Szenthe, Ildikó
AU - Gillemot, Ferenc
AU - Chaouadi, Rachid
N1 - Score=10
PY - 2020/5/15
Y1 - 2020/5/15
N2 - The neutron irradiation embrittlement of four dierent types of nuclear pressure vessel materials (three base metals and one weld material) were investigated by a magnetic nondestructive testing method, magnetic adaptive testing (MAT). The method is based on the measurement of minor magnetic hysteresis loops on Charpy specimens irradiated by neutrons in the BR2 reactor. Due to the neutron irradiation, the structure of the material was modified. The Charpy impact method is suitable for destructive characterization of material embrittlement. The results of Charpy impact test measurements at SCK CEN Belgian Nuclear Research Centre were compared with the nondestructively measured magnetic parameters. A definite correlation was found between magnetic descriptors and the ductile-to-brittle transition temperature (DBTT), regardless of the type of material or irradiation condition. The results suggest that this “calibration curve“ can be used to estimate the DBTT from non-destructive measurements.
AB - The neutron irradiation embrittlement of four dierent types of nuclear pressure vessel materials (three base metals and one weld material) were investigated by a magnetic nondestructive testing method, magnetic adaptive testing (MAT). The method is based on the measurement of minor magnetic hysteresis loops on Charpy specimens irradiated by neutrons in the BR2 reactor. Due to the neutron irradiation, the structure of the material was modified. The Charpy impact method is suitable for destructive characterization of material embrittlement. The results of Charpy impact test measurements at SCK CEN Belgian Nuclear Research Centre were compared with the nondestructively measured magnetic parameters. A definite correlation was found between magnetic descriptors and the ductile-to-brittle transition temperature (DBTT), regardless of the type of material or irradiation condition. The results suggest that this “calibration curve“ can be used to estimate the DBTT from non-destructive measurements.
KW - Steel degradation
KW - Nuclear reactor pressure vessel
KW - Magnetic NDT
KW - Magnetic adaptive testing
KW - Neutron irradiation
UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/39587163
U2 - 10.3390/met10050642
DO - 10.3390/met10050642
M3 - Article
VL - 10
SP - 1
EP - 11
JO - Metals
JF - Metals
SN - 2075-4701
M1 - 642
ER -
ID: 6891496