Ultra Grain Refinement of Fe-Based Alloys by Accumulated Roll Bonding

  1. Prof. Dr. Michael Zehetbauer2 and
  2. Prof. Ruslan Z. Valiev3
  1. A.C.C Reis,
  2. I. Tolleneer,
  3. L. Barbé,
  4. L. Kestens and
  5. Y. Houbaert

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch9h

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Reis, A.C.C., Tolleneer, I., Barbé, L., Kestens, L. and Houbaert, Y. (2004) Ultra Grain Refinement of Fe-Based Alloys by Accumulated Roll Bonding, 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.ch9h

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. Ghent University, Department of Metallurgy and Materials Science, Technologiepark 903, B-9052, Ghent, 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:

  • ultra grain refinement;
  • Fe-based alloys;
  • accumulated roll bonding (ARB);
  • ultrafine grain structures;
  • equal channel angular pressing (ECAP);
  • nanocrystalline materials;
  • industrial upscaling;
  • severe plastic deformation

Summary

Ultrafine grain structures are being studied worldwide using different types of processes on various materials including low carbon steels. According to state-of-the-art literature equal channel angular pressing (ECAP) and powder metallurgy techniques can truly produce ultrafine to nanocrystalline materials. Unfortunately these techniques do not seem very promising with regard to industrial implementation, because it is not possible to apply these methods in a continuous process. A technique which is based on thermo-mechanical processes of a continuous nature would be much more attractive in terms of industrial upscaling. In the present approach a severe plastic deformation is applied to an interstitial free steel by submitting the material to a severe rolling reduction. In a previous work by the present authors it was already shown that conventional severe rolling reduction, of 95 % (ϵ = 3.0), does not produce a random high angle grain boundary distribution in the deformed sheet. In order to obtain rolling reductions of more than 99 % the Accumulated Roll Bonding (ARB) technique was employed. The microstructure, texture and misorientation distribution of ARB samples which were warm rolled between 500 and 680 °C to a total reduction of 99.9 % (true strain ϵ = 6.9) is studied.