In situ investigation of MgO nanocube deformation at room temperature

I. Issa, J. Amodeo, J. Réthoré, L. Joly-Pottuz, C. Esnouf, J. Morthomas, M. Perez, J. Chevalier, K. Masenelli-Varlot

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19 Citations (Scopus)

Abstract

The mechanical behavior of 〈1 0 0〉-oriented MgO nanocubes is investigated using in situ transmission electron microscopy (TEM) compression tests at room temperature and molecular dynamics simulations. Experiments show high strength and ductility, in addition to specific deformation mechanisms interpreted by the simulation. The nucleation and the propagation of 1/2〈1 1 0〉{1 1 0} dislocations are at the onset of the plastic deformation. The different deformation processes as well as the possible formation of a dislocation network during compression are discussed.

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalActa Materialia
Volume86
DOIs
Publication statusPublished - 2015 Mar

Keywords

  • In situ TEM
  • MgO
  • Molecular dynamics
  • Nanomechanics
  • Nanoparticles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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    Issa, I., Amodeo, J., Réthoré, J., Joly-Pottuz, L., Esnouf, C., Morthomas, J., Perez, M., Chevalier, J., & Masenelli-Varlot, K. (2015). In situ investigation of MgO nanocube deformation at room temperature. Acta Materialia, 86, 295-304. https://doi.org/10.1016/j.actamat.2014.12.001