TITLE

Size-independent shear band formation in amorphous nanowires made from simulated casting

AUTHOR(S)
Yunfeng Shi
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p121909
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Molecular dynamics simulations indicate that surfaces strongly influence the strain localization behavior of amorphous nanowires in tension. A sample preparation routine that simulates casting was employed to facilitate the relaxation of the sample surface. Samples as short as 15 nm (7.5 nm in diameter) form dominant shear bands during deformation. The elastic energy release during plastic deformation is sufficient to provide the excess potential energy required for the shear band nucleation at rather small sample sizes. The results show that shear band formation is almost size-independent and is bounded only by its own length scale.
ACCESSION #
48837237

 

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