A Composite Grain Model of Strengthening for SPD Produced UFG Materials

  1. Prof. Dr. Michael Zehetbauer3 and
  2. Prof. Ruslan Z. Valiev4
  1. E.V. Kozlov1,
  2. A.N. Zhdanov2,
  3. N.A. Popova1 and
  4. N.A. Koneva1

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch4h

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Kozlov, E.V., Zhdanov, A.N., Popova, N.A. and Koneva, N.A. (2004) A Composite Grain Model of Strengthening for SPD Produced UFG Materials, 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.ch4h

Editor Information

  1. 3

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

  2. 4

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

Author Information

  1. 1

    Tomsk State University of Architecture and Building, Tomsk, Russia

  2. 2

    Altai State Technical University, Barnaul, Russia

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:

  • composite grain model of strengthening;
  • UFG materials;
  • ultrafine grained materials;
  • severe plastic deformation (SPD);
  • Hall–Petch relationship

Summary

By now the problem of strengthening of ultrafine grained (UFG) materials obtained by the severe plastic deformation (SPD) is highly actual. Basically the solving of this problem concentrates on the analysis of an applicability of the well-known Hall–Petch (H-P) relationship

σ = σ0 + k d−1/2 (1)

0 and k are relationship parameters, d is a grain size), the behavior of k parameter in the large grain size interval, consideration of the experimental results and deformation mechanisms. A number of models of the k parameter behavior were suggested. Some of these models are considered to be highly exotic. The present work is devoted to the study of these questions in UFG copper and is the direct continuation and development of our investigations [1].