64. Low-Temperature Superplasticity in Microcrystalline ZK60 and AZ91 Magnesium Alloys Processed by ECAP

  1. Prof. Dr. K. U. Kainer
  1. V. N. Chuvil'deev1,
  2. T. G. Nieh2,
  3. M. Yu. Gryaznov1,
  4. A. N. Sysoev1 and
  5. V. I. Kopylov3

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch64

Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications

Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications

How to Cite

Chuvil'deev, V. N., Nieh, T. G., Gryaznov, M. Yu., Sysoev, A. N. and Kopylov, V. I. (2003) Low-Temperature Superplasticity in Microcrystalline ZK60 and AZ91 Magnesium Alloys Processed by ECAP, in Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications (ed K. U. Kainer), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527603565.ch64

Editor Information

  1. GKSS-Forschungszentrum, Institut für Werkstoffforschung, Max-Planck-Straße, 21502 Geesthacht, Germany

Author Information

  1. 1

    Research Physical & Technical Institute of Nizhny Novgorod State University, Nizhny Novgorod, Russia

  2. 2

    Lawrence Livermore National Laboratory, University of California, Livermore, USA

  3. 3

    Physical — Technical Institute of National Academy of Science, Minsk, Belarus

Publication History

  1. Published Online: 22 APR 2005
  2. Published Print: 27 NOV 2003

ISBN Information

Print ISBN: 9783527309757

Online ISBN: 9783527603565

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Keywords:

  • low-temperature superplasticity;
  • microcrystalline magnesium alloys;
  • ZK60;
  • AZ91;
  • ECAP

Summary

Particularly, low-temperature superplasticity has been reported in some microcrystalline magnesium alloys processed by ECAP at relatively low strain rates (10−4 - 10−5 s−1) [5-12]. For commercial interest, however, it is desirable to obtain superplasticity in high-strength magnesium alloys not only at low temperatures but also high strain rates (> 3 × 10−3 s−1). To achieve this goal for microcrystalline high-strength ZK60 and AZ91 magnesium alloys, two major tasks are encountered. The first task is to optimize the ECAP process to develop ultrafine grains with non-equilibrium grain boundaries [2, 4]. The second task is to characterize the superplasticity properties and to obtain maximum elongation.