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dc.contributor.author
Deluigi, Orlando Raul
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dc.contributor.author
Pasianot, Roberto Cesar
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dc.contributor.author
Valencia, F. J.
dc.contributor.author
Caro, A.
dc.contributor.author
Farkas, D.
dc.contributor.author
Bringa, Eduardo Marcial
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dc.date.available
2022-08-29T13:07:36Z
dc.date.issued
2021-07
dc.identifier.citation
Deluigi, Orlando Raul; Pasianot, Roberto Cesar; Valencia, F. J.; Caro, A.; Farkas, D.; et al.; Simulations of primary damage in a High Entropy Alloy: Probing enhanced radiation resistance; Elsevier; Acta Materialia; 213; 7-2021; 1-10
dc.identifier.issn
1359-6454
dc.identifier.uri
http://hdl.handle.net/11336/166798
dc.description.abstract
High Entropy Alloys (HEA) attract attention as possible radiation resistant materials, a feature observed in some experiments that has been attributed to several unique properties of HEA, in particular to the disorder-induced reduced thermal conductivity and to the peculiar defect properties originating from the chemical complexity. To explore the origin of such behavior we study the early stages (less than 0.1 ns), of radiation damage response of a HEA using molecular dynamics simulations of collision cascades induced by primary knock-on atoms (PKA) with 10, 20 and 40 keV, at room temperature, on an idealized model equiatomic quinary fcc FeNiCrCoCu alloy, the corresponding “Average Atom” (AA) material, and on pure Ni. We include accurate corrections to describe short-range atomic interactions during the cascade. In all cases the average number of defects in the HEA is lower than for pure Ni, which has been previously used to help claiming that HEA is radiation resistant. However, simulated defect evolution during primary damage, including the number of surviving Frenkel Pairs, and the defect cluster size distributions are nearly the same in all cases, within our statistical uncertainty. The number of surviving FP in the alloy is predicted fairly well by analytical models of defect production in pure materials. All of this indicates that the origin of radiation resistance in HEAs as observed in experiments may not be related to a reduction in primary damage due to chemical disorder, but is probably caused by longer-time defect evolution.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HIGH-ENTROPY ALLOY
dc.subject
IRRADIATION DEFECTS
dc.subject
MOLECULAR DYNAMICS
dc.subject
PRIMARY KNOCK-ON ATOM
dc.subject.classification
Física Nuclear
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Simulations of primary damage in a High Entropy Alloy: Probing enhanced radiation resistance
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-08-16T20:37:23Z
dc.journal.volume
213
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Deluigi, Orlando Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad de Mendoza. Facultad de Ingenieria; Argentina
dc.description.fil
Fil: Pasianot, Roberto Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina. Comision Nacional de Energia Atomica. Gerencia D/area de Energia Nuclear. Gerencia Materiales.; Argentina
dc.description.fil
Fil: Valencia, F. J.. Universidad Mayor.; Chile. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Caro, A.. The George Washington University; Estados Unidos
dc.description.fil
Fil: Farkas, D.. Virginia Polytechnic Institute; Estados Unidos
dc.description.fil
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Mendoza. Facultad de Ingenieria; Argentina. Universidad Mayor.; Chile
dc.journal.title
Acta Materialia
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S1359645421003311
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.actamat.2021.116951
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