Production and Consolidation of Nanocrystalline Fe Based Alloy Powders

  1. Prof. Dr. Michael Zehetbauer3 and
  2. Prof. Ruslan Z. Valiev4
  1. M. Rombouts1,
  2. L. Froyen1,
  3. A.C.C. Reis2 and
  4. L. Kestens2

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch10h

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Rombouts, M., Froyen, L., Reis, A.C.C. and Kestens, L. (2004) Production and Consolidation of Nanocrystalline Fe Based Alloy Powders, 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.ch10h

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

    Department of Metallurgy and Materials Engineering (MTM), Katholieke Universiteit Leuven, Belgium

  2. 2

    Department of Metallurgy, Ghent University, Belgium

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:

  • nanocrystalline Fe based alloy powders;
  • production;
  • consolidation;
  • hot uniaxial pressing (HUP);
  • hot rolling;
  • equal channel angular extrusion (ECAE);
  • control of grain growth

Summary

The consolidation of nanostructured Fe-10 at% Cu and Fe-10 at% Mo powder produced by mechanical milling is investigated. In previous work, it was found that the thermal stability of the nanostructured Fe-10 at% Cu powder is rather low, making hot compaction impossible. Therefore, the powder is first annealed at relatively low temperature (400-500 °C), then cold pressed and finally warm rolled at 420 °C. The thermal stability of nanostructured Fe-10 at% Mo was found to be better. However, full densification by Hot Uniaxial Pressing (HUP) leads to the loss of the nanostructure. Therefore, partial densification by HUP followed by hot rolling or by Equal Channel Angular Extrusion, is used as an alternative processing route, in order to keep the grain growth under control.