Paper Title:
Numerical Exploration of the Defect’s Effect on Mechanical Properties of Nanowires under Torsion
  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.

  Info
Periodical
Advanced Materials Research (Volumes 335-336)
Chapter
Chapter 2: Micro/Nano Materials
Edited by
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
Pages
498-501
DOI
10.4028/www.scientific.net/AMR.335-336.498
Citation
H. F. Zhan, Y. T. Gu, C. Yan, P. K.D.V. Yarlagadda, "Numerical Exploration of the Defect’s Effect on Mechanical Properties of Nanowires under Torsion", Advanced Materials Research, Vols. 335-336, pp. 498-501, 2011
Online since
September 2011
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Price
$32.00
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