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Microstructural stability of secondary phases in an ODS ferritic steel after thermal aging at 873 K

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Nanoestructuras Semiconductorases
dc.contributor.authorOñoro Salaices, Moisés
dc.contributor.authorCastro Bernal, María Vanessa de
dc.contributor.authorLeguey Galán, Teresa
dc.contributor.authorPöppelová, J.
dc.contributor.authorHuizenga, R M
dc.contributor.authorAuger Martinez, Maria Angustias
dc.date.accessioned2023-12-18T18:50:30Z
dc.date.available2023-12-18T18:50:30Z
dc.date.issued2024-01-01
dc.description.abstractAn oxide dispersion strengthened (ODS) steel with nominal composition Fe-14Cr-2W-0.4Ti-0.3Y2O3 (wt. %) has been manufactured by mechanical alloying of pre-alloyed powders with nanosized Y2O3, compacted by hot isostatic pressing and hot cross rolled. In order to evaluate the long-term thermal resistance of the alloy, it has been subjected to 2000 hours of thermal aging at 873 K, which is a relevant temperature for nuclear reactor applications. A thermodynamic equilibrium simulation indicates the precipitation of Laves phase under the aging parameters used. This prediction is confirmed from the detailed multi-technique characterization performed. Before aging, Ti-rich oxides, Cr-W-rich precipitates (M23C6 type) and a homogeneous Y-rich nanoprecipitate dispersion are observed. After aging, some W-rich precipitates are identified as Laves phase, while M23C6 carbides, Ti-rich oxides and Y-rich nanoprecipitates remain stable. Mechanical characterization performed in a previous research showed higher hardness, a loss of total elongation and a slight shift of the ductile-to-brittle transition temperature (DBTT) towards a higher value after aging, with similar strength values before and after the long-term thermal treatment. These changes can be due to the redistribution of precipitates together with the Laves phase formation. The mechanical properties not being dramatically affected seem to be due to the observed stability of Y-rich nanoprecipitates distribution.en
dc.description.sponsorshipAcknowledgements. Funding from AEI (Agencia Estatal de Investigación) with reference AEI/10.13039/501100011033 (project PID2019-105325RB-C33); Comunidad de Madrid (Spain) through the programs Talento-CAM (2017-T1/IND-5439 and 2021-5A/IND-20954), Technofusion (III) CM (S2018/EMT-4437) and multiannual agreement with UC3M (“Excelencia para el Profesorado Universitario”-EPUC3M14) is gratefully acknowledged.en
dc.description.statusPublicadoes
dc.format.extent10es
dc.identifier.bibliographicCitationOñoro, M.; Castro, V. de; Leguey, T.; Pöpperlová, J.; Huizenga, R.M.; Auger, M.A. "Microstructural stability of secondary phases in an ODS ferritic steel after thermal aging at 873 K". Materials Characterization 207 (2024) 113517 (10p.). https://doi.org/10.1016/j.matchar.2023.113517en
dc.identifier.doihttps://doi.org/10.1016/j.matchar.2023.113517
dc.identifier.issn1044-5803
dc.identifier.publicationfirstpage113517-1
dc.identifier.publicationissueJanuary, 113517en
dc.identifier.publicationlastpage113517-10
dc.identifier.publicationtitleMaterials Characterizationen
dc.identifier.publicationvolume207
dc.identifier.urihttps://hdl.handle.net/10016/39110
dc.identifier.uxxiAR/0000033670
dc.language.isoengen
dc.publisherElsevier Inc.en
dc.relation.projectIDComunidad de Madrid. 2017-T1/IND-5439es
dc.relation.projectIDComunidad de Madrid. S2018/EMT-4437es
dc.relation.projectIDGobierno de España. PID2019-105325RB-C33es
dc.relation.projectIDComunidad de Madrid. 2021-5A/IND-20954es
dc.relation.projectIDComunidad de Madrid. EPUC3M14en
dc.rights© 2023 The Authors.en
dc.rightsPublished by Elsevier Inc. This is an open access article under the CC BY-NC-ND licenseen
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.ecienciaMaterialeses
dc.subject.otherOds Steelen
dc.subject.otherAgingen
dc.subject.otherLaves Phaseen
dc.subject.otherNanoparticlesen
dc.subject.otherTemen
dc.subject.otherApten
dc.titleMicrostructural stability of secondary phases in an ODS ferritic steel after thermal aging at 873 Ken
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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