Optimum high temperature strength of two-dimensional nanocomposites
High-temperature nanoindentation was used to reveal nano-layer size effects on the hardness of two-dimensional metallic nanocomposites. We report the existence of a critical layer thickness at which strength achieves optimal thermal stability. Transmission electron microscopy and theoretical bicryst...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2013-11-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4828757 |
| _version_ | 1819194633621602304 |
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| author | M. A. Monclús S. J. Zheng J. R. Mayeur I. J. Beyerlein N. A. Mara T. Polcar J. Llorca J. M. Molina-Aldareguía |
| author_facet | M. A. Monclús S. J. Zheng J. R. Mayeur I. J. Beyerlein N. A. Mara T. Polcar J. Llorca J. M. Molina-Aldareguía |
| author_sort | M. A. Monclús |
| collection | DOAJ |
| description | High-temperature nanoindentation was used to reveal nano-layer size effects on the hardness of two-dimensional metallic nanocomposites. We report the existence of a critical layer thickness at which strength achieves optimal thermal stability. Transmission electron microscopy and theoretical bicrystal calculations show that this optimum arises due to a transition from thermally activated glide within the layers to dislocation transmission across the layers. We demonstrate experimentally that the atomic-scale properties of the interfaces profoundly affect this critical transition. The strong implications are that interfaces can be tuned to achieve an optimum in high temperature strength in layered nanocomposite structures. |
| first_indexed | 2024-12-23T01:59:58Z |
| format | Article |
| id | doaj.art-9c11ef9e842c439d9dbf4ec9d142a420 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-23T01:59:58Z |
| publishDate | 2013-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-9c11ef9e842c439d9dbf4ec9d142a4202022-12-21T18:04:00ZengAIP Publishing LLCAPL Materials2166-532X2013-11-0115052103052103-710.1063/1.4828757006305APMOptimum high temperature strength of two-dimensional nanocompositesM. A. Monclús0S. J. Zheng1J. R. Mayeur2I. J. Beyerlein3N. A. Mara4T. Polcar5J. Llorca6J. M. Molina-Aldareguía7IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, SpainLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USALos Alamos National Laboratory, Los Alamos, New Mexico 87545, USALos Alamos National Laboratory, Los Alamos, New Mexico 87545, USALos Alamos National Laboratory, Los Alamos, New Mexico 87545, USACzech Technical University in Prague, Technická 2, Prague 6, Czech RepublicIMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, SpainIMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, SpainHigh-temperature nanoindentation was used to reveal nano-layer size effects on the hardness of two-dimensional metallic nanocomposites. We report the existence of a critical layer thickness at which strength achieves optimal thermal stability. Transmission electron microscopy and theoretical bicrystal calculations show that this optimum arises due to a transition from thermally activated glide within the layers to dislocation transmission across the layers. We demonstrate experimentally that the atomic-scale properties of the interfaces profoundly affect this critical transition. The strong implications are that interfaces can be tuned to achieve an optimum in high temperature strength in layered nanocomposite structures.http://dx.doi.org/10.1063/1.4828757 |
| spellingShingle | M. A. Monclús S. J. Zheng J. R. Mayeur I. J. Beyerlein N. A. Mara T. Polcar J. Llorca J. M. Molina-Aldareguía Optimum high temperature strength of two-dimensional nanocomposites APL Materials |
| title | Optimum high temperature strength of two-dimensional nanocomposites |
| title_full | Optimum high temperature strength of two-dimensional nanocomposites |
| title_fullStr | Optimum high temperature strength of two-dimensional nanocomposites |
| title_full_unstemmed | Optimum high temperature strength of two-dimensional nanocomposites |
| title_short | Optimum high temperature strength of two-dimensional nanocomposites |
| title_sort | optimum high temperature strength of two dimensional nanocomposites |
| url | http://dx.doi.org/10.1063/1.4828757 |
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