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

Orlov, Dmitry; 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
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
2017-07-02 04:52:13
@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},
  keyword      = {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},
  volume       = {64},
  year         = {2011},
}