Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum

Molecular dynamics simulations of cracked nanocrystals of aluminum were performed in order to investigate the crack length and grain boundary effects. Atomistic models of single-crystals and bi-crystals were built considering 11 different crack lengths. Novel approaches based on fracture mechanics c...

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Detalles Bibliográficos
Autores principales: Velilla-Díaz, Wilmer, Zambrano, Habib R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622953/
https://www.ncbi.nlm.nih.gov/pubmed/34835548
http://dx.doi.org/10.3390/nano11112783
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author Velilla-Díaz, Wilmer
Zambrano, Habib R.
author_facet Velilla-Díaz, Wilmer
Zambrano, Habib R.
author_sort Velilla-Díaz, Wilmer
collection PubMed
description Molecular dynamics simulations of cracked nanocrystals of aluminum were performed in order to investigate the crack length and grain boundary effects. Atomistic models of single-crystals and bi-crystals were built considering 11 different crack lengths. Novel approaches based on fracture mechanics concepts were proposed to predict the crack length effect on single-crystals and bi-crystals. The results showed that the effect of the grain boundary on the fracture resistance was beneficial increasing the fracture toughness almost four times for bi-crystals.
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spelling pubmed-86229532021-11-27 Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum Velilla-Díaz, Wilmer Zambrano, Habib R. Nanomaterials (Basel) Article Molecular dynamics simulations of cracked nanocrystals of aluminum were performed in order to investigate the crack length and grain boundary effects. Atomistic models of single-crystals and bi-crystals were built considering 11 different crack lengths. Novel approaches based on fracture mechanics concepts were proposed to predict the crack length effect on single-crystals and bi-crystals. The results showed that the effect of the grain boundary on the fracture resistance was beneficial increasing the fracture toughness almost four times for bi-crystals. MDPI 2021-10-21 /pmc/articles/PMC8622953/ /pubmed/34835548 http://dx.doi.org/10.3390/nano11112783 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Velilla-Díaz, Wilmer
Zambrano, Habib R.
Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title_full Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title_fullStr Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title_full_unstemmed Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title_short Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
title_sort crack length effect on the fracture behavior of single-crystals and bi-crystals of aluminum
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622953/
https://www.ncbi.nlm.nih.gov/pubmed/34835548
http://dx.doi.org/10.3390/nano11112783
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