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dc.contributor.author
Ruestes, Carlos Javier
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dc.contributor.author
Farkas, Diana
dc.date.available
2023-08-09T10:34:53Z
dc.date.issued
2022-04
dc.identifier.citation
Ruestes, Carlos Javier; Farkas, Diana; Dislocation emission and propagation under a nano-indenter in a model high entropy alloy; Elsevier; Computational Materials Science; 205; 4-2022; 1-10
dc.identifier.issn
0927-0256
dc.identifier.uri
http://hdl.handle.net/11336/207518
dc.description.abstract
The nanoindentation response of a FeNiCrCoCu high-entropy alloy is explored by means of atomistic simulations. In order to study the role of compositional complexity, we compare the behavior of the quinary FeNiCrCoCu alloy with that of an average atom potential fitted to the same overall properties of the alloy. In this way, we reveal the influence of compositional randomness of the multicomponent alloys on the onset of plasticity, deformation mechanisms and residual microstructure. Plasticity is dominated by dislocation activity, with twinning appearing as a complementary deformation mechanism in both models. While the HEA alloy substrate yields for a similar indenter penetration, indentation hardness is higher in the HEA alloy. After mitigation of strain rate effects, major differences are observed, influenced by the more difficult movement of dislocations in the compositionally complex HEA alloy. The results are in agreement with previous studies of plasticity in high entropy alloys and highlight the importance of using average atom models over comparison with single element studies for understanding complex multi principal element alloys.
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
COMPOSITION FLUCTUATIONS
dc.subject
MECHANICAL PROPERTIES
dc.subject
METALS AND ALLOYS
dc.subject
MOLECULAR DYNAMICS SIMULATIONS
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
Dislocation emission and propagation under a nano-indenter in a model high entropy alloy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-08-08T13:35:10Z
dc.journal.volume
205
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
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
Computational Materials Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.commatsci.2022.111218
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