Flow Mechanisms in Creep of an AZ 91 Magnesium-based Composite
- Prof. Dr.-Ing. K. U. Kainer
Published Online: 15 MAY 2006
DOI: 10.1002/3527607552.ch38
Copyright © 2000 Wiley-VCH Verlag GmbH
Book Title
Magnesium Alloys and their Applications
Additional Information
How to Cite
Sklenicka, V., Pahutova, M., Kucharova, K., Svoboda, M. and Langdon, T. G. (2006) Flow Mechanisms in Creep of an AZ 91 Magnesium-based Composite, in Magnesium Alloys and their Applications (ed K. U. Kainer), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607552.ch38
Editor Information
GKSS-Forschungszentrum Geesthacht GmbH, Institut für Werkstofforschung, Max-Planck- Straße, D-21502 Geesthacht, Germany
Publication History
- Published Online: 15 MAY 2006
- Published Print: 20 SEP 2000
ISBN Information
Print ISBN: 9783527302826
Online ISBN: 9783527607556
- Summary
- Chapter
Keywords:
- magnesium alloys;
- magnesium matrix composites;
- flow mechanisms in creep;
- AZ 91 magnesium-based composite
Summary
At present, it is generally accepted that creep deformation in metal matrix composites is controlled by flow in the matrix materials. This conclusion is supported by very recent experimental results on a squeeze-cast AZ 91 alloy reinforced with 20 vol. % Al2O3 short fibres reported by Li et al. [12, 13]. When the creep data were interpreted by incorporation of a threshold stress σTH into the analysis, it was shown that the results are consistent with the behavior anticipated for magnesium solid solution alloys [14]. Thus, it can be suggested that the creep strengthening in the composite arises mainly from the existence of a threshold stress and the load transfer effect [5, 15]. The present study was therefore initiated in order to provide further information on the significance of the threshold stress in creep of the AZ 91 composite. Attention in this paper is focused primarily on the effect of temperature on the threshold stress.