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Formation of bimodal grain structures in high purity Al by reversal high pressure torsion

Orlov, Dmitry LU orcid ; Todaka, Yoshikazu ; Umemoto, Minoru and Tsuji, Nobuhiro (2011) In Scripta Materialia 64(6). p.498-501
Abstract

Bimodal grain structure was fabricated in a 99.99% purity aluminium by high pressure torsion at ambient temperature in reversal deformation mode at a strain amplitude Δε = 1, strain rate ̇=1.1×10 -1s-1 and hydrostatic pressure P = 5 GPa. Enhanced boundary mobility due to the high purity of the aluminium and homologous temperature coupled with reversal simple shear deformation are found to be responsible for bimodal microstructure formation.

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author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aluminium, Bimodal grain size, Electron backscatter diffraction, Severe plastic deformation, Strain reversal
in
Scripta Materialia
volume
64
issue
6
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:78651270803
ISSN
1359-6462
DOI
10.1016/j.scriptamat.2010.11.020
language
English
LU publication?
no
id
6679fb66-fdbd-45e5-ae4b-18c75ab99668
date added to LUP
2016-06-20 15:38:50
date last changed
2022-01-30 04:37:11
@article{6679fb66-fdbd-45e5-ae4b-18c75ab99668,
  abstract     = {{<p>Bimodal grain structure was fabricated in a 99.99% purity aluminium by high pressure torsion at ambient temperature in reversal deformation mode at a strain amplitude Δε = 1, strain rate ̇=1.1×10 <sup>-1</sup>s<sup>-1</sup> and hydrostatic pressure P = 5 GPa. Enhanced boundary mobility due to the high purity of the aluminium and homologous temperature coupled with reversal simple shear deformation are found to be responsible for bimodal microstructure formation.</p>}},
  author       = {{Orlov, Dmitry and Todaka, Yoshikazu and Umemoto, Minoru and Tsuji, Nobuhiro}},
  issn         = {{1359-6462}},
  keywords     = {{Aluminium; Bimodal grain size; Electron backscatter diffraction; Severe plastic deformation; Strain reversal}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{498--501}},
  publisher    = {{Elsevier}},
  series       = {{Scripta Materialia}},
  title        = {{Formation of bimodal grain structures in high purity Al by reversal high pressure torsion}},
  url          = {{http://dx.doi.org/10.1016/j.scriptamat.2010.11.020}},
  doi          = {{10.1016/j.scriptamat.2010.11.020}},
  volume       = {{64}},
  year         = {{2011}},
}