77. Analysis of Deformation and Fracture Mechanisms in Mg-Az31 Sheet Material

  1. Prof. Dr. K. U. Kainer
  1. Gaofeng Quan and
  2. Jürgen Heerens

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch77

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

Quan, G. and Heerens, J. (2003) Analysis of Deformation and Fracture Mechanisms in Mg-Az31 Sheet Material, 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.ch77

Editor Information

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

Author Information

  1. Institute for Materials Research, GKSS Research Centre, 21502 Geesthacht, Germany

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:

  • Mg-Az31 sheet material;
  • analysis of deformation;
  • fracture mechanisms

Summary

In the present work, deformation and fracture in rolled Mg AZ31 sheet material are investigated using tensile specimens with different orientations, tested at various strain rates. In RD specimens (loading in rolling direction) the generation of dislocation slip bands is predominately observed. This correlates with a low strength of the material and small plastic anisotropy value, r. In TD specimens (loading in transverse direction) the material deforms due to intense twin development, which is combined with a high strength and a large r-value. The r-values increase with increasing strains but seem to be independent on the strain rate. In RD specimens micro-cracks nucleate predominantly at dislocation slip bands. In TD specimens the micro cracks initiate mainly at intersections and interfaces of twin bands. In both orientations a slant fracture surface is observed on macroscopic scale.