Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels

Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels

We report results of measurements of first-order reversal curves (FORCs) for neutron irradiated reactor pressure vessel steels to seek their possible application to a nondestructive evaluation of the irradiation hardening. We find a peak position of the FORC distribution, which is the second derivat...

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Main Authors: Satoru Kobayashi, Hiroaki Murakami, Ákos Horváth, László Almásy, Ferenc Gillemot, Artem Feoktystov
Format: Article
Language:English
Published: AIP Publishing LLC 2020-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5130414
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spelling doaj-ead0726501234790b99ba405a7a4f2cc2020-11-24T23:29:22ZengAIP Publishing LLCAIP Advances2158-32262020-01-01101015221015221-510.1063/1.5130414Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steelsSatoru Kobayashi0Hiroaki Murakami1Ákos Horváth2László Almásy3Ferenc Gillemot4Artem Feoktystov5Department of Materials Science and Engineering, Faculty of Engineering, Iwate University, Ueda 4-3-5, Morioka 020-8551, JapanDepartment of Materials Science and Engineering, Faculty of Engineering, Iwate University, Ueda 4-3-5, Morioka 020-8551, JapanCentre for Energy Research, Hungarian Academy of Sciences, H-1121 Budapest, HungaryWigner Research Centre for Physics, Hungarian Academy of Sciences, H-1121 Budapest, HungaryCentre for Energy Research, Hungarian Academy of Sciences, H-1121 Budapest, HungaryForschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), 85748 Garching, GermanyWe report results of measurements of first-order reversal curves (FORCs) for neutron irradiated reactor pressure vessel steels to seek their possible application to a nondestructive evaluation of the irradiation hardening. We find a peak position of the FORC distribution, which is the second derivative of measured FORCs, shifts towards zero field after neutron irradiation, associated with the narrowing of the peak width. The observations indicate the progress of the magnetic softening and magnetic homogeneity under neutron irradiation. The present investigations demonstrate that FORCs can offer additional information on microstructural changes due to neutron irradiation, which can not be obtained by a conventional hysteresis method.http://dx.doi.org/10.1063/1.5130414
collection DOAJ
language English
format Article
sources DOAJ
author Satoru Kobayashi
Hiroaki Murakami
Ákos Horváth
László Almásy
Ferenc Gillemot
Artem Feoktystov
spellingShingle Satoru Kobayashi
Hiroaki Murakami
Ákos Horváth
László Almásy
Ferenc Gillemot
Artem Feoktystov
Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
AIP Advances
author_facet Satoru Kobayashi
Hiroaki Murakami
Ákos Horváth
László Almásy
Ferenc Gillemot
Artem Feoktystov
author_sort Satoru Kobayashi
title Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
title_short Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
title_full Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
title_fullStr Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
title_full_unstemmed Effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
title_sort effects of neutron irradiation on magnetic first-order reversal curves in reactor pressure vessel steels
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2020-01-01
description We report results of measurements of first-order reversal curves (FORCs) for neutron irradiated reactor pressure vessel steels to seek their possible application to a nondestructive evaluation of the irradiation hardening. We find a peak position of the FORC distribution, which is the second derivative of measured FORCs, shifts towards zero field after neutron irradiation, associated with the narrowing of the peak width. The observations indicate the progress of the magnetic softening and magnetic homogeneity under neutron irradiation. The present investigations demonstrate that FORCs can offer additional information on microstructural changes due to neutron irradiation, which can not be obtained by a conventional hysteresis method.
url http://dx.doi.org/10.1063/1.5130414
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