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On the reliability of powder diffraction Line Profile Analysis of plastically deformed nanocrystalline systems.

Rebuffi, Luca; Troian, Andrea LU ; Ciancio, Regina; Carlino, Elvio; Amimi, Amine; Leonardi, Alberto and Scardi, Paolo (2016) In Scientific Reports 6.
Abstract
An iron-molybdenum alloy powder was extensively deformed by high energy milling, so to refine the bcc iron domain size to nanometer scale (~10 nm) and introduce a strong inhomogeneous strain. Both features contribute to comparable degree to the diffraction peak profile broadening, so that size and strain contributions can be easily separated by exploiting their different dependence on the diffraction angle. To assess the reliability of Line Profile Analysis, results were compared with evidence from other techniques, including scanning and transmission electron microscopy and X-ray small angle scattering. Results confirm the extent of the size broadening effect, whereas molecular dynamics simulations provide insight into the origin of the... (More)
An iron-molybdenum alloy powder was extensively deformed by high energy milling, so to refine the bcc iron domain size to nanometer scale (~10 nm) and introduce a strong inhomogeneous strain. Both features contribute to comparable degree to the diffraction peak profile broadening, so that size and strain contributions can be easily separated by exploiting their different dependence on the diffraction angle. To assess the reliability of Line Profile Analysis, results were compared with evidence from other techniques, including scanning and transmission electron microscopy and X-ray small angle scattering. Results confirm the extent of the size broadening effect, whereas molecular dynamics simulations provide insight into the origin of the local atomic, inhomogeneous strain, pointing out the role of dislocations, domain boundaries and interactions among crystalline domains. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
6
publisher
Nature Publishing Group
external identifiers
  • pmid:26860471
  • scopus:84958213310
  • wos:000369744700001
ISSN
2045-2322
DOI
10.1038/srep20712
language
English
LU publication?
yes
id
aad48b75-fab0-4e66-9a3e-e874be56945b (old id 8826034)
date added to LUP
2016-03-14 08:44:49
date last changed
2017-10-08 03:50:43
@article{aad48b75-fab0-4e66-9a3e-e874be56945b,
  abstract     = {An iron-molybdenum alloy powder was extensively deformed by high energy milling, so to refine the bcc iron domain size to nanometer scale (~10 nm) and introduce a strong inhomogeneous strain. Both features contribute to comparable degree to the diffraction peak profile broadening, so that size and strain contributions can be easily separated by exploiting their different dependence on the diffraction angle. To assess the reliability of Line Profile Analysis, results were compared with evidence from other techniques, including scanning and transmission electron microscopy and X-ray small angle scattering. Results confirm the extent of the size broadening effect, whereas molecular dynamics simulations provide insight into the origin of the local atomic, inhomogeneous strain, pointing out the role of dislocations, domain boundaries and interactions among crystalline domains.},
  articleno    = {20712},
  author       = {Rebuffi, Luca and Troian, Andrea and Ciancio, Regina and Carlino, Elvio and Amimi, Amine and Leonardi, Alberto and Scardi, Paolo},
  issn         = {2045-2322},
  language     = {eng},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {On the reliability of powder diffraction Line Profile Analysis of plastically deformed nanocrystalline systems.},
  url          = {http://dx.doi.org/10.1038/srep20712},
  volume       = {6},
  year         = {2016},
}