Exploration of the defect’s effect on the mechanical properties of different orientated nanowires


Autoria(s): Zhan, Haifei; Gu, YuanTong
Contribuinte(s)

Zhang, Chunliang

Data(s)

18/09/2011

Resumo

Molecular dynamics (MD) simulations have been carried out to investigate the defect’s effect on the mechanical properties of copper nanowire with different crystallographic orientations, under tensile deformation. Three different crystallographic orientations have been considered. The deformation mechanism has been carefully discussed. It is found that the Young’s modulus is insensitive to the defect, even when the nanowire’s crystallographic orientation is different. However, due to the defect’s effect, the yield strength and yield strain appear a large decrease. The defects have played a role of dislocation sources, the slips or stacking faults are first generated around the locations of the defects. The necking locations have also been affected by different defects. Due to the surface defect, the plastic deformation has received a large influence for the <001>/{110} and <110> orientated nanowires, and a relative small influence is seen for the <111> nanowire.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/42595/

Publicador

Trans Tech Publications Ltd.

Relação

http://eprints.qut.edu.au/42595/2/42595.pdf

DOI:10.4028/www.scientific.net/AMR.328-330.1239

Zhan, Haifei & Gu, YuanTong (2011) Exploration of the defect’s effect on the mechanical properties of different orientated nanowires. Advanced Materials Research, 328-30, pp. 1239-1244.

Direitos

Copyright 2011 Trans Tech Publications, Switzerland.

Fonte

Faculty of Built Environment and Engineering; School of Engineering Systems

Palavras-Chave #091299 Materials Engineering not elsewhere classified #091307 Numerical Modelling and Mechanical Characterisation #Defect #Deformation Mechanism #Molecular Dynamics (MD) #Nanowire #Orientation
Tipo

Journal Article