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Microstructure-dependent mechanical behaviors of SiC nanowires

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Authors
Wang, Jun
Lu, Chunsheng
Wang, Qi
Xiao, P.
Ke, F.
Bai, Y.
Shen, Y.
Liao, X.
Gao, H.
Date
2012
Type
Conference Paper

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Wang, Jun and Lu, Chunsheng and Wang, Qi and Xiao, Pan and Ke, Fujiu and Bai, Yilong and Shen, Yaogen and Liao, Xiaozhou and Gao, Huajian. 2012. Microstructure-dependent mechanical behaviors of SiC nanowires, in Proceedings of The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012), Aug 19-24 2012. Beijing, China: The Chinese Society of Theoretical and Applied Mechanics.
Source Title
The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012)
Source Conference
The 23rd International Congress of Theoretical and Applied Mechanics (ICTAM2012)
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Department of Mechanical Engineering
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Abstract

The tensile behaviors of [111]-oriented SiC nanowires (NWs) with various microstructures are investigated by using molecular dynamics simulations. The results elucidate the influence of microstructures on brittleness and plasticity of SiC NWs. Plastic deformation is mainly induced by the anti-parallel sliding of 3C grains along an intergranular amorphous film parallel to the (111) plane and inclined at an angle of 19.47° with respect to the NW axis. Also revealed is that the wide dispersion of mechanical properties of SiC NWs observed in experiments is attributed to their diverse microstructures.