65. Structural Durability and Fatigue Life Assessment for Magnesium Diecast Specimen

  1. Prof. Dr. K. U. Kainer
  1. Karl Ludwig Kotte and
  2. Sven Werdin

Published Online: 22 APR 2005

DOI: 10.1002/3527603565.ch65

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

Kotte, K. L. and Werdin, S. (2005) Structural Durability and Fatigue Life Assessment for Magnesium Diecast Specimen, 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.ch65

Editor Information

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

Author Information

  1. Dresden University of Technology, Institute of Solid State Mechanics, 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:

  • diecast magnesium;
  • structural durability;
  • fatigue life assessment

Summary

Lightweight design asks for the use of magnesium in applications that are also relevant to functionality and safety. But the implementation of this material is restricted by the lack of knowledge about the operational strength of structures under various ambient conditions and the absence of design guidelines.

The fatigue behaviour of two types of notched specimen made of the magnesium diecast alloys AZ91, AE42 and AM50 was investigated at constant amplitude and variable amplitude tests. The ambient conditions of these tests were laboratory air at room temperature, at 125 °C and a permanent influence of sodium-chloride solution at room temperature. Based on a substantial and consistent data set several variants of nominal-stress concept as well as local-strain approach were applied to draw conclusions to improve the reliability of lifetime estimation of components made of magnesium.