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Numerical exploration of the defect’s effect on mechanical properties of nanowires under torsion

Zhan, Haifei, Gu, YuanTong, Yan, Cheng, & Yarlagadda, Prasad K.D.V. (2011) Numerical exploration of the defect’s effect on mechanical properties of nanowires under torsion. Advanced Materials Research, 335, pp. 498-501.

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Abstract

Molecular dynamics (MD) simulations have been carried out to investigate the defect’s effect on the mechanical properties of single-crystal copper nanowire with different surface defects, under torsion deformation. The torsional rigidity is found insensitive to the surface defects and the critical angle appears an obvious decrease due to the surface defects, the largest decrease is found for the nanowire with surface horizon defect. The deformation mechanism appears different degrees of influence due to surface defects. The surface defects play a role of dislocation sources. Comparing with single intrinsic stacking faults formation for the perfect nanowire, much affluent deformation processes have been activated because of surface defects, for instance, we find the twins formation for the nanowire with a surface 45o defect.

Impact and interest:

5 citations in Scopus
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5 citations in Web of Science®

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ID Code: 46067
Item Type: Journal Article
Keywords: Nanowires, Defect, Torsion, Deformation Mechanism, Molecular Dynamics
DOI: 10.4028/www.scientific.net/AMR.335-336.498
ISSN: 1022-6680
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2011 Trans Tech Publications
Deposited On: 21 Sep 2011 08:37
Last Modified: 22 Sep 2011 11:36

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