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.
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.
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|Item Type:||Journal Article|
|Keywords:||Nanowires, Defect, Torsion, Deformation Mechanism, Molecular Dynamics|
|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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