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dc.contributor.author
Ruestes, Carlos Javier
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dc.contributor.author
Farkas, Diana
dc.date.available
2022-10-14T16:58:47Z
dc.date.issued
2021-10
dc.identifier.citation
Ruestes, Carlos Javier; Farkas, Diana; Deformation response of high entropy alloy nanowires; Springer; Journal of Materials Science; 56; 29; 10-2021; 16447-16462
dc.identifier.issn
0022-2461
dc.identifier.uri
http://hdl.handle.net/11336/173297
dc.description.abstract
This paper reports atomistic simulation studies of tensile and compressive behavior of nanowires of a model quinary high entropy face-centered cubic (FCC) alloy. The simulations employ empirical interatomic potentials and use massively parallel molecular dynamics techniques at the atomistic level to study the deformation mechanisms. The studies consider pristine cylindrical nanowires oriented along various crystallographic directions. The focus is the role that local composition fluctuations in the random alloy plays in the deformation response. The deformation behavior observed for the complex random alloy is compared with a corresponding ‘‘average atom’’ material that has the same average properties but no local compositional fluctuations. In all cases, deformation is governed by dislocations emitted from the free surface. Twinning was also found, depending on the crystallographic orientation and loading mode. We show that for all orientations, the high entropy alloy (HEA) wires show the onset of plasticity at lower stress levels than the average atom material. However, after the onset of plasticity, the HEA presents a higher strength, mostly driven by the fact that the dislocations emitted from the surface do not glide as easily in the random alloy as they do in the average atom material.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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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
NANOWIRES
dc.subject
MOLECULAR DYNAMICS
dc.subject
HIGH ENTROPY ALLOYS
dc.subject
TWINNING
dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Deformation response of high entropy alloy nanowires
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-10-13T16:40:49Z
dc.journal.volume
56
dc.journal.number
29
dc.journal.pagination
16447-16462
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlín
dc.description.fil
Fil: Ruestes, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
dc.description.fil
Fil: Farkas, Diana. Virginia Tech University; Estados Unidos
dc.journal.title
Journal of Materials Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10853-021-06314-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/s10853-021-06314-1
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