Texture Evolution in Severe Plastic Deformation by Equal Channel Angular Extrusion

  1. Prof. Dr. Michael Zehetbauer2 and
  2. Prof. Ruslan Z. Valiev3
  1. L. S. Tóth

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch5a

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Tóth, L. S. (2004) Texture Evolution in Severe Plastic Deformation by Equal Channel Angular 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.ch5a

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. Laboratoire de Physique et Mécanique des Matériaux, Université de Metz, Metz, France

  1. The Author dedicates this paper to Prof. H. P. Stüwe for his friendship to people and his lifetime scientific achievements.

Publication History

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

ISBN Information

Print ISBN: 9783527306596

Online ISBN: 9783527602469

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Keywords:

  • texture evolution;
  • severe plastic deformation (SPD);
  • equal channel angular extrusion (ECAE);
  • simple shear model;
  • flow field;
  • viscoplastic polycrystal code;
  • A-route ECAE deformation;
  • copper polycrystal

Summary

The majority of the techniques of severe plastic deformation calls for simple shear deformation mode. This is why a special interest is given in this paper to textures that develop in simple shear. The evolution of texture in Equal Channel Angular Extrusion (ECAE) is also discussed in detail. The classical simple shear model of ECAE is examined as well as a new, more precise flow field which uses an analytical flow function. The proposed function is inspired from finite element calculations. The velocity gradient that follows from the analysis is incorporated into the self consistent viscoplastic polycrystal code. The evolution of deformation texture is predicted up to two passes in the A-route ECAE deformation of copper polycrystal when the extrusion angle is 90°.