In situ investigation of MgO nanocube deformation at room temperature

被引：64
作者：
Issa, I. [1 ,2 ]
Amodeo, J. [1 ]
Rethore, J. [2 ]
Joly-Pottuz, L. [1 ]
Esnouf, C. [1 ]
Morthomas, J. [1 ]
Perez, M. [1 ]
Chevalier, J. [1 ]
Masenelli-Varlot, K. [1 ]
机构：
[1] Univ Lyon, INSA Lyon, MATEIS, CNRS,UMR5510, F-69621 Villeurbanne, France
[2] Univ Lyon, INSA Lyon, LAMCOS, CNRS,UMR5259, F-69621 Villeurbanne, France
来源：
ACTA MATERIALIA | 2015年 / 86卷
关键词：
MgO; In situ TEM; Nanoparticles; Molecular dynamics; Nanomechanics; STACKING-FAULT ENERGIES; TRANSMISSION ELECTRON-MICROSCOPY; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; SINGLE-CRYSTALS; MICROPILLAR COMPRESSION; DISLOCATION NUCLEATION; MAGNESIUM-OXIDE; YIELD STRENGTH; HIGH-PRESSURE;
D O I：
10.1016/j.actamat.2014.12.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：295 / 304
页数：10
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