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Microstructure evolution in pure Al processed with twist extrusion

Orlov, Dmitry; Beygelzimer, Yan; Synkov, Sergey; Varyukhin, Viktor; Tsuji, Nobuhiro and Horita, Zenji (2009) In Materials Transactions 50(1). p.96-100
Abstract

High purity Al (99.99%) was subjected to severe plastic deformation through twist extrusion at room temperature. Microstructures were examined for 1 pass and 4 passes on the cross section perpendicular to the longitudinal axis of billets using optical microscopy and electron back scatter diffraction analysis. It was shown that a vortex-like material flow was observed on the cross section and this became more intense with increasing number of the pressing. After one pass, subgrain structures with low angle grain boundaries were developed throughout the section but after 4 passes, the microstructure consisted of grains surrounded by high angle boundaries with fraction of ̃70% in the edge parts. The average grain size at the edge parts is... (More)

High purity Al (99.99%) was subjected to severe plastic deformation through twist extrusion at room temperature. Microstructures were examined for 1 pass and 4 passes on the cross section perpendicular to the longitudinal axis of billets using optical microscopy and electron back scatter diffraction analysis. It was shown that a vortex-like material flow was observed on the cross section and this became more intense with increasing number of the pressing. After one pass, subgrain structures with low angle grain boundaries were developed throughout the section but after 4 passes, the microstructure consisted of grains surrounded by high angle boundaries with fraction of ̃70% in the edge parts. The average grain size at the edge parts is refined tõ1.6μm.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aluminum, Electron backscattered diffraction (EBSD), Optical microscopy, Severe plastic deformation, Twist extrusion
in
Materials Transactions
volume
50
issue
1
pages
5 pages
publisher
Japan Institute of Metals (JIM)
external identifiers
  • scopus:60849092539
ISSN
1345-9678
DOI
10.2320/matertrans.MD200802
language
English
LU publication?
no
id
5239c049-9c85-49be-9658-c12e483b6c19
date added to LUP
2016-06-20 15:42:08
date last changed
2017-09-10 05:07:09
@article{5239c049-9c85-49be-9658-c12e483b6c19,
  abstract     = {<p>High purity Al (99.99%) was subjected to severe plastic deformation through twist extrusion at room temperature. Microstructures were examined for 1 pass and 4 passes on the cross section perpendicular to the longitudinal axis of billets using optical microscopy and electron back scatter diffraction analysis. It was shown that a vortex-like material flow was observed on the cross section and this became more intense with increasing number of the pressing. After one pass, subgrain structures with low angle grain boundaries were developed throughout the section but after 4 passes, the microstructure consisted of grains surrounded by high angle boundaries with fraction of ̃70% in the edge parts. The average grain size at the edge parts is refined tõ1.6μm.</p>},
  author       = {Orlov, Dmitry and Beygelzimer, Yan and Synkov, Sergey and Varyukhin, Viktor and Tsuji, Nobuhiro and Horita, Zenji},
  issn         = {1345-9678},
  keyword      = {Aluminum,Electron backscattered diffraction (EBSD),Optical microscopy,Severe plastic deformation,Twist extrusion},
  language     = {eng},
  number       = {1},
  pages        = {96--100},
  publisher    = {Japan Institute of Metals (JIM)},
  series       = {Materials Transactions},
  title        = {Microstructure evolution in pure Al processed with twist extrusion},
  url          = {http://dx.doi.org/10.2320/matertrans.MD200802},
  volume       = {50},
  year         = {2009},
}