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Useful properties of twist extrusion

Beygelzimer, Y.; Varyukhin, V.; Synkov, S. and Orlov, D. LU (2009) In Materials Science and Engineering A 503(1-2). p.14-17
Abstract

We present an experimental study of the kinematics of twist extrusion (TE) and show that TE has the following properties: (i) as in equal-channel angular pressing (ECAP), the mode of deformation in twist extrusion is simple shear. Unlike in ECAP, there are two shear planes; one of them is perpendicular and the other is parallel to the specimen axis. (ii) The following processes are present during twist extrusion: vortex-like flow with large strain gradient, stretching and mixing of metal particles. We argue that, due to these properties, TE opens possibilities for investigating and forming new microstructures. It has already been successfully used to obtain ultrafine-grained microstructures with good properties in Al, Cu and Ti... (More)

We present an experimental study of the kinematics of twist extrusion (TE) and show that TE has the following properties: (i) as in equal-channel angular pressing (ECAP), the mode of deformation in twist extrusion is simple shear. Unlike in ECAP, there are two shear planes; one of them is perpendicular and the other is parallel to the specimen axis. (ii) The following processes are present during twist extrusion: vortex-like flow with large strain gradient, stretching and mixing of metal particles. We argue that, due to these properties, TE opens possibilities for investigating and forming new microstructures. It has already been successfully used to obtain ultrafine-grained microstructures with good properties in Al, Cu and Ti alloys.

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Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Severe plastic deformation, Twist extrusion, Ultrafine-grained materials
in
Materials Science and Engineering A
volume
503
issue
1-2
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:59049095633
ISSN
0921-5093
DOI
10.1016/j.msea.2007.12.055
language
English
LU publication?
no
id
701cb933-55a4-438a-8aa0-f86a0c6f8bec
date added to LUP
2016-06-20 15:48:43
date last changed
2017-10-29 04:49:33
@article{701cb933-55a4-438a-8aa0-f86a0c6f8bec,
  abstract     = {<p>We present an experimental study of the kinematics of twist extrusion (TE) and show that TE has the following properties: (i) as in equal-channel angular pressing (ECAP), the mode of deformation in twist extrusion is simple shear. Unlike in ECAP, there are two shear planes; one of them is perpendicular and the other is parallel to the specimen axis. (ii) The following processes are present during twist extrusion: vortex-like flow with large strain gradient, stretching and mixing of metal particles. We argue that, due to these properties, TE opens possibilities for investigating and forming new microstructures. It has already been successfully used to obtain ultrafine-grained microstructures with good properties in Al, Cu and Ti alloys.</p>},
  author       = {Beygelzimer, Y. and Varyukhin, V. and Synkov, S. and Orlov, D.},
  issn         = {0921-5093},
  keyword      = {Severe plastic deformation,Twist extrusion,Ultrafine-grained materials},
  language     = {eng},
  month        = {03},
  number       = {1-2},
  pages        = {14--17},
  publisher    = {Elsevier},
  series       = { Materials Science and Engineering A},
  title        = {Useful properties of twist extrusion},
  url          = {http://dx.doi.org/10.1016/j.msea.2007.12.055},
  volume       = {503},
  year         = {2009},
}