29. Microstructural Changes of AZ91 Magnesium Alloy After Heat Treatment

  1. Prof. Dr. K. U. Kainer
  1. Andrzej Kiełbus1,
  2. Lubomir Ciżek2 and
  3. Libor Pawlica2

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch29

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

Kiełbus, A., Ciżek, L. and Pawlica, L. (2003) Microstructural Changes of AZ91 Magnesium Alloy After Heat Treatment, 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.ch29

Editor Information

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

Author Information

  1. 1

    Silesian University of Technology, Katowice, Poland

  2. 2

    VSB-TU 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

SEARCH

Keywords:

  • AZ91 magnesium alloy;
  • microstructural changes;
  • heat treatment

Summary

Mg-Al-Zn based alloys are the most commonly used magnesium alloys for structural components. AZ91 alloy is a widely used casting magnesium alloy. The paper presents microstructural characterisation of AZ91 (Mg-9Al.-0,6Zn) alloy after casting and heat treatment. The casting temperature was 740°C and heat treatment was performed at 415 °C/1÷48 h with aging at 165 °C for 8h. The microstructure of the casting alloy consists of α-Mg phase matrix with a primary brittle β phase (Mg17Al12) at grain boundaries. We also observed precipitations of Mg2 Si and MnAl4 phases.

The microstructural changes of this alloy have been investigated using light microscopy.