Understanding large plastic deformation of SiC nanowires at room temperature

Understanding large plastic deformation of SiC nanowires at room temperature

Tensile behaviors of SiC [111] nanowires with various possible microstructures have been investigated by molecular-dynamics simulations. The results show that the large plastic deformation in these nanowires is induced by the anti-parallel sliding of 3C grains along an ultra- thin intergranular amor...

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Bibliographic Details
Main Authors: Wang, Jun, Lu, Chunsheng, Wang, Q., Xiao, P., Ke, F., Bai, Y., Shen, Y., Liao, X., Gao, H.
Format: Journal Article
Published: Institute of Physics Publishing Ltd. 2011
Online Access:http://hdl.handle.net/20.500.11937/49475
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Summary:Tensile behaviors of SiC [111] nanowires with various possible microstructures have been investigated by molecular-dynamics simulations. The results show that the large plastic deformation in these nanowires is induced by the anti-parallel sliding of 3C grains along an ultra- thin intergranular amorphous film parallel to the (11¯1) plane and inclined at an angle of 19.47◦ with respect to the nanowire axis. The resulting large plastic deformation of SiC nanowires at room temperature is attributed to the stretching, breaking and re-forming of Si–C bonds in the intergranular amorphous film, which is also evident from the sawtooth jumps in the stress-strain response.

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