Optimum high temperature strength of two-dimensional nanocomposites

Monclús, M. A. and Zheng, S. J. and Mayeur, J. R. and Beyerlein, I. J. and Mara, N. A. and Polcar, T. and Llorca Martinez, Francisco Javier and Molina Aldareguía, Jon M. (2013). Optimum high temperature strength of two-dimensional nanocomposites. "APL Materials", v. 1 (n. 052103); pp. 1-7. ISSN 2166-532X. https://doi.org/10.1063/1.4828757.

Description

Title: Optimum high temperature strength of two-dimensional nanocomposites
Author/s:
  • Monclús, M. A.
  • Zheng, S. J.
  • Mayeur, J. R.
  • Beyerlein, I. J.
  • Mara, N. A.
  • Polcar, T.
  • Llorca Martinez, Francisco Javier
  • Molina Aldareguía, Jon M.
Item Type: Article
Título de Revista/Publicación: APL Materials
Date: November 2013
Volume: 1
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 29080
DC Identifier: http://oa.upm.es/29080/
OAI Identifier: oai:oa.upm.es:29080
DOI: 10.1063/1.4828757
Official URL: http://scitation.aip.org/content/aip/journal/aplmater/1/5/10.1063/1.4828757
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2014 09:10
Last Modified: 22 Sep 2014 11:44
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