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Tensile behavior of single-crystal nano-sized Cu beams – Geometric scaling effects

Ahadi, Aylin LU ; Hansson, Per LU and Melin, Solveig LU (2017) In Computational Materials Science 135. p.127-133
Abstract

In this paper the mechanical response of single-crystal nano-sized Cu beams of different sizes, loaded in displacement controlled tension under constant strain rate is investigated through 3D molecular dynamic simulations using the free-ware LAMMPS. The effects from pure geometric scaling are determined for two different crystallographic orientations of the lattice. Stress–strain curves were recorded until rupture of the beams and the developments of the atomic arrangements were followed in detail. The elastic parts of the curves showed to be non-linear and that size effects to some extend influenced the elastic and significantly the plastic mechanical response. Further the crystallographic orientation markedly influenced the response... (More)

In this paper the mechanical response of single-crystal nano-sized Cu beams of different sizes, loaded in displacement controlled tension under constant strain rate is investigated through 3D molecular dynamic simulations using the free-ware LAMMPS. The effects from pure geometric scaling are determined for two different crystallographic orientations of the lattice. Stress–strain curves were recorded until rupture of the beams and the developments of the atomic arrangements were followed in detail. The elastic parts of the curves showed to be non-linear and that size effects to some extend influenced the elastic and significantly the plastic mechanical response. Further the crystallographic orientation markedly influenced the response to mechanical loading.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crystallographic orientation, Cu nano-beams, Geometric scaling, Necking of Cu nano-beams
in
Computational Materials Science
volume
135
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85018608047
  • wos:000402497100014
ISSN
0927-0256
DOI
10.1016/j.commatsci.2017.04.010
language
English
LU publication?
yes
id
f2764338-857d-4ba8-bec7-45f6b98c59e4
date added to LUP
2017-05-12 07:50:44
date last changed
2018-06-24 05:12:59
@article{f2764338-857d-4ba8-bec7-45f6b98c59e4,
  abstract     = {<p>In this paper the mechanical response of single-crystal nano-sized Cu beams of different sizes, loaded in displacement controlled tension under constant strain rate is investigated through 3D molecular dynamic simulations using the free-ware LAMMPS. The effects from pure geometric scaling are determined for two different crystallographic orientations of the lattice. Stress–strain curves were recorded until rupture of the beams and the developments of the atomic arrangements were followed in detail. The elastic parts of the curves showed to be non-linear and that size effects to some extend influenced the elastic and significantly the plastic mechanical response. Further the crystallographic orientation markedly influenced the response to mechanical loading.</p>},
  author       = {Ahadi, Aylin and Hansson, Per and Melin, Solveig},
  issn         = {0927-0256},
  keyword      = {Crystallographic orientation,Cu nano-beams,Geometric scaling,Necking of Cu nano-beams},
  language     = {eng},
  month        = {07},
  pages        = {127--133},
  publisher    = {Elsevier},
  series       = {Computational Materials Science},
  title        = {Tensile behavior of single-crystal nano-sized Cu beams – Geometric scaling effects},
  url          = {http://dx.doi.org/10.1016/j.commatsci.2017.04.010},
  volume       = {135},
  year         = {2017},
}