Influence of the Processing Parameters at High Pressure Torsion

  1. Prof. Dr. Michael Zehetbauer4 and
  2. Prof. Ruslan Z. Valiev5
  1. T. Hebesberger1,3,
  2. A. Vorhauer1,
  3. H.P. Stüwe2 and
  4. R. Pippan1,2

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch8b

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Hebesberger, T., Vorhauer, A., Stüwe, H.P. and Pippan, R. (2004) Influence of the Processing Parameters at High Pressure Torsion, 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.ch8b

Editor Information

  1. 4

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

  2. 5

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

Author Information

  1. 1

    Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria

  2. 2

    Christian Doppler Laboratory for Local Analysis of Deformation and Fracture, Leoben, Austria

  3. 3

    VOEST-ALPINE STAHL, GmbH, Austria

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:

  • processing parameters;
  • high pressure torsion (HPT);
  • severe plastic deformation techniques;
  • microstructure refining;
  • back scatter electron imaging (BSE);
  • electron back scatter diffraction

Summary

Severe plastic deformation techniques induce large plastic strains in materials at relatively low temperatures. These techniques have the potential of refining the microstructure of metals and alloys to the submicrometer or even to the nanometer range [1–4]. The microstructure of a severe plastic deformed material should depend on the applied strain, the strain path – which is given by the applied technique – the strain rate, the temperature and the pressure. In the present paper we focus our attention to the effect of strain, temperature and pressure. High pressure torsion, HPT, is a proper tool to investigate these parameters in an extreme wide range. The paper could be interpreted as a fundamental investigation of strain, pressure and temperature on the microstructural evolution during severe plastic deformation or as a study of the most important processing parameters of the HPT-technique. Recrystallized pure copper is used. The developed microstructures were analyzed by back scatter electron (BSE) imaging and by an electron back scatter diffraction technique.