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Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites
Heterostructured materials afford a new way to improve the mechanical properties, which has become vital in both materials science and engineering applications. In the present research, Cu/Nb multilayer composites with layer thicknesses from the micrometer to nanometer were fabricated by accumulativ...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10213193/ https://www.ncbi.nlm.nih.gov/pubmed/37251863 http://dx.doi.org/10.1016/j.heliyon.2023.e16231 |
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author | Ding, Chaogang Xu, Jie Shan, Debin Guo, Bin Langdon, Terence G. |
author_facet | Ding, Chaogang Xu, Jie Shan, Debin Guo, Bin Langdon, Terence G. |
author_sort | Ding, Chaogang |
collection | PubMed |
description | Heterostructured materials afford a new way to improve the mechanical properties, which has become vital in both materials science and engineering applications. In the present research, Cu/Nb multilayer composites with layer thicknesses from the micrometer to nanometer were fabricated by accumulative roll bonding and the microstructure and mechanical properties of the Cu/Nb multilayer composites were then investigated. The yield strength and ultimate tensile strength of these composites increase with decreasing layer thickness. Moreover, the relationship between yield strength and (layer thickness)(−1/2) approximately accords with the conventional Hall-Petch equation but with a decrease in the Hall-Petch slope when the layer thickness decreases from the micrometer to nanometer scales. The deformation microstructure of these Cu/Nb multilayer composites clearly exhibit dislocations glide in the layers, which reduces the stacking of dislocations at the Cu–Nb interface and thereby weakens the strengthening effect of the interface. |
format | Online Article Text |
id | pubmed-10213193 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-102131932023-05-27 Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites Ding, Chaogang Xu, Jie Shan, Debin Guo, Bin Langdon, Terence G. Heliyon Research Article Heterostructured materials afford a new way to improve the mechanical properties, which has become vital in both materials science and engineering applications. In the present research, Cu/Nb multilayer composites with layer thicknesses from the micrometer to nanometer were fabricated by accumulative roll bonding and the microstructure and mechanical properties of the Cu/Nb multilayer composites were then investigated. The yield strength and ultimate tensile strength of these composites increase with decreasing layer thickness. Moreover, the relationship between yield strength and (layer thickness)(−1/2) approximately accords with the conventional Hall-Petch equation but with a decrease in the Hall-Petch slope when the layer thickness decreases from the micrometer to nanometer scales. The deformation microstructure of these Cu/Nb multilayer composites clearly exhibit dislocations glide in the layers, which reduces the stacking of dislocations at the Cu–Nb interface and thereby weakens the strengthening effect of the interface. Elsevier 2023-05-12 /pmc/articles/PMC10213193/ /pubmed/37251863 http://dx.doi.org/10.1016/j.heliyon.2023.e16231 Text en © 2023 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Ding, Chaogang Xu, Jie Shan, Debin Guo, Bin Langdon, Terence G. Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title | Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title_full | Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title_fullStr | Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title_full_unstemmed | Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title_short | Influence of bimetal interface confinement on the Hall-petch slope of multiscale Cu/Nb multilayer composites |
title_sort | influence of bimetal interface confinement on the hall-petch slope of multiscale cu/nb multilayer composites |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10213193/ https://www.ncbi.nlm.nih.gov/pubmed/37251863 http://dx.doi.org/10.1016/j.heliyon.2023.e16231 |
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