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dc.contributor.authorOsetsky, Yuri
dc.contributor.authorAnento Moreno, Napoleón
dc.contributor.authorSerra Tort, Ana María
dc.contributor.authorTerentyev, Dimitry
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2016-05-04T12:08:54Z
dc.date.available2017-02-01T01:30:31Z
dc.date.issued2015-02-01
dc.identifier.citationOsetsky, Y., Anento, N., Serra, A., Terentyev, D. The role of nickel in radiation damage of ferritic alloys. "Acta materialia", 01 Febrer 2015, vol. 84, p. 368-374.
dc.identifier.issn1359-6454
dc.identifier.urihttp://hdl.handle.net/2117/86565
dc.description.abstractAccording to modern theory, damage evolution under neutron irradiation depends on the fraction of self-interstitial atoms (SIAs) produced in the form of one-dimensional glissile clusters. These clusters, having a low interaction cross-section with other defects, are absorbed mainly by grain boundaries and dislocations, creating the so-called production bias. It is known empirically that the addition of certain alloying elements influences many radiation effects, including swelling; however, the mechanisms are unknown in many cases. In this paper we report the results of an extensive multi-technique atomistic level modeling study of SIA clusters mobility in body-centered cubic Fe-Ni alloys. We have found that Ni interacts strongly with the periphery of clusters, affecting their mobility. The total effect is defined by the number of Ni atoms interacting with the cluster at the same time and can be significant, even in low-Ni alloys. Thus a 1 nm (37SIAs) cluster is practically immobile at T < 500 K in the Fe-0.8 at.% Ni alloy. Increasing cluster size and Ni content enhances cluster immobilization. This effect should have quite broad consequences in void swelling, matrix damage accumulation and radiation induced hardening and the results obtained help to better understand and predict the effects of radiation in Fe-Ni ferritic alloys. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
dc.format.extent7 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures metàl·liques
dc.subject.lcshStructures and materials
dc.subject.otherDislocation loops
dc.subject.otherFe-Ni alloys
dc.subject.otherDiffusion mechanism
dc.subject.otherRadiation effects
dc.subject.otherGLISSILE INTERSTITIAL CLUSTERS
dc.subject.otherFE-CR ALLOYS
dc.subject.otherALPHA-IRON
dc.subject.otherDISPLACEMENT CASCADES
dc.subject.otherDISLOCATION LOOPS
dc.subject.otherATOM CLUSTERS
dc.subject.otherMODEL ALLOYS
dc.subject.otherBCC IRON
dc.subject.otherCOPPER
dc.subject.otherEMBRITTLEMENT
dc.titleThe role of nickel in radiation damage of ferritic alloys
dc.typeArticle
dc.subject.lemacConstruccions metàl·liques
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity
dc.identifier.doi10.1016/j.actamat.2014.10.060
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.identifier.drac15504795
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PE/FIS2012-39443-C02-02
local.citation.authorOsetsky, Y.; Anento, N.; Serra, A.; Terentyev, D.
local.citation.publicationNameActa materialia
local.citation.volume84
local.citation.startingPage368
local.citation.endingPage374


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