Severe Plastic Deformation by Twist Extrusion

  1. Prof. Dr. Michael Zehetbauer2 and
  2. Prof. Ruslan Z. Valiev3
  1. Y. Beygelzimer,
  2. V. Varyukhin,
  3. D. Orlov,
  4. S. Synkov,
  5. A. Spuskanyuk and
  6. Y. Pashinska

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch9e

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Beygelzimer, Y., Varyukhin, V., Orlov, D., Synkov, S., Spuskanyuk, A. and Pashinska, Y. (2005) Severe Plastic Deformation by Twist Extrusion, in Nanomaterials by Severe Plastic Deformation (eds M. Zehetbauer and R. Z. Valiev), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527602461.ch9e

Editor Information

  1. 2

    Institut für Materialphysik, Universität Wien, Boltzmanngasse 5, 1090 Wien, Austria

  2. 3

    Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marks Str., Ufa, 450 000, Russia

Author Information

  1. Donetsk Phys & Tech. Institute, 72 R. Luxembourg St., Donetsk, Ukraine

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 25 FEB 2004

ISBN Information

Print ISBN: 9783527306596

Online ISBN: 9783527602469



  • severe plastic deformation (SPD);
  • twist extrusion (TE);
  • bulk ultrafine-grained materials;
  • Cellular model


Severe plastic deformation (SPD) has been shown to be one of the most effective methods for obtaining bulk ultrafine-grained materials. It is typically performed using equal channel angular pressing (ECAP) and multiple forging. In this work we describe and analyze a new method for severe plastic deformations that is based on the direct extrusion of a bulk through a twist channel, and thus it is called “twist extrusion” (TE). The idea of this method and some first experimental results were published in [1]. In this paper we describe the method, the structure and the properties of the resulting work-pieces. A new approach to the investigation of the grain fragmentation at SPD is proposed and discussed. The fragmentation of grains is numerically simulated using a Cellular Model.