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Positron annihilation study of the vacancy clusters in ODS Fe-14Cr alloys

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales Nano-Estructurados y Multifuncionaleses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales avanzados para aplicaciones en energía solares
dc.contributor.authorDomínguez Reyes, Ricardo
dc.contributor.authorAuger, María A.
dc.contributor.authorMonge Alcázar, Miguel Ángel
dc.contributor.authorPareja Pareja, Ramiro
dc.date.accessioned2023-07-17T07:37:28Z
dc.date.available2023-07-17T07:37:28Z
dc.date.issued2017-01-19
dc.description.abstractOxide dispersion strengthened Fe14Cr and Fe14CrWTi alloys produced by mechanical alloying and hot isostatic pressing were subjected to isochronal annealing up to 1400 °C, and the evolution and thermal stability of the vacancy-type defects were investigated by positron annihilation spectroscopy (PAS). The results were compared to those from a non-oxide dispersion strengthened Fe14Cr alloy produced by following the same powder metallurgy route. The long lifetime component of the PAS revealed the existence of tridimensional vacancy clusters, or nanovoids, in all these alloys. Two recovery stages are found in the oxide dispersion strengthened alloys irrespective of the starting conditions of the samples. The first one starting at T > 750 °C is attributed to thermal shrinkage of large vacancy clusters, or voids. A strong increase in the intensity of the long lifetime after annealing at temperatures in the 800–1050 °C range indicates the development of new vacancy clusters. These defects appear to be unstable above 1050 °C, but some of them remain at temperatures as high as 1400 °C, at least for 90 min.en
dc.format.extent18
dc.identifier.bibliographicCitationDomínguez-Reyes, R., Auger, M., Monge, M. R., & Pareja, R. (2017). Positron annihilation study of the vacancy clusters in ODS FE–14CR alloys. Philosophical Magazine, 97(11), 833-850.en
dc.identifier.doihttps://doi.org/10.1080/14786435.2017.1280621
dc.identifier.issn1478-6435
dc.identifier.publicationfirstpage833
dc.identifier.publicationissue11
dc.identifier.publicationlastpage850
dc.identifier.publicationtitlePhilosophical Magazineen
dc.identifier.publicationvolume97
dc.identifier.urihttps://hdl.handle.net/10016/37858
dc.identifier.uxxiAR/0000019549
dc.language.isoeng
dc.publisherTaylor & Francisen
dc.rights© 2017 Informa UK Limited, trading as Taylor & Francis Group.en
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.otherWorden
dc.subject.otherPositron annihilationen
dc.subject.otherSteelen
dc.subject.otherODS alloysen
dc.subject.otherVacancy clustersen
dc.titlePositron annihilation study of the vacancy clusters in ODS Fe-14Cr alloysen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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