78. Unstable Plastic Deformation in Mg Alloys-Post Relaxation Effect

  1. Prof. Dr. K. U. Kainer
  1. Zuzanka Trojanová1,
  2. Pavel Lukáč1 and
  3. Luboš Číźek2

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch78

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

Trojanová, Z., Lukáč, P. and Číźek, L. (2003) Unstable Plastic Deformation in Mg Alloys-Post Relaxation Effect, 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.ch78

Editor Information

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

Author Information

  1. 1

    Faculty Mathematics and Physics, Charles University, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic

  2. 2

    Technical University Ostrava, Tř. 17. listopadu 2172, CZ-708 00 Ostrava, Czech Republic

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:

  • magnesium alloys;
  • plastic deformation;
  • post relaxation effect

Summary

Post relaxation effect, i.e. an increase of the flow stress at the beginning of plastic deformation after stress relaxation in comparison to the flow stress at the beginning of stress relaxation, is observed in the case of dynamic strain ageing. The post relaxation effect is sensitive to the strain and temperature. Possible changes in the internal stresses and the mobile dislocation density are considered to be responsible for the post relaxation effect.