Production of Superplastic Mg Alloys Using Severe Plastic Deformation

  1. Prof. Dr. Michael Zehetbauer3 and
  2. Prof. Ruslan Z. Valiev4
  1. Zenji Horita1,
  2. Kiyoshi Matsubara1,
  3. Yuichi Miyahara1 and
  4. Terence G. Langdon2

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch13b

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Horita, Z., Matsubara, K., Miyahara, Y. and Langdon, T. G. (2004) Production of Superplastic Mg Alloys Using Severe Plastic Deformation, 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.ch13b

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

    Kyushu University, Fukuoka, Japan

  2. 2

    University of Southern California, Los Angeles, U.S.A.

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:

  • superelasticity;
  • production;
  • superplastic Mg alloys;
  • severe plastic deformation (SPD);
  • equal-channel angular pressing (ECAP)

Summary

Equal-Channel Angular Pressing (ECAP) was conducted to refine grain size to the submicrometer level in three different Mg alloys having nominal compositions of Mg-0.6wt%Zr, Mg-9wt%Al and Mg-7.5wt%Al-0.2wt%Zr. It is shown that the grain refinement was successfully achieved when the alloys were subjected to extrusion prior to ECAP. Thermal stability of the fine-grained structures was examined by conducting static annealing experiment at various temperatures. Transmission electron microscopy was used for the observation of microstructures. Tensile tests were performed at elevated temperatures and it is shown that high-strain-rate and/or low-temperature superplasticity was attained in the alloys subjected to ECAP.