Hußnätter W (2008)
Publication Type: Conference contribution
Publication year: 2008
Publisher: Hanrimwon Publishing Co.
Pages Range: 109
Conference Proceedings Title: Proceedings of ICTP2008
Since numerical simulations, i.e. especially the finite element method, have become more and more important for the product design and its whole production process over the last decades, huge endeavours have been made to enhance the calculation methods. Regarding to sheet metal processing and the fact that new light weight materials have been developed, the modelling of material behaviour plays a main role. Magnesium sheet metal is known as the lightest metallic material and therefore it offers huge potentials for light weight constructions. The most common wrought alloy is AZ31, but due to the rolling process during production of the semi-finished part and its crystallographic structure the material shows distinct anisotropy behaviour and a limited formability at room temperature. As a precondition for the integration of this material into finite element analysis (FEA) the yielding behaviour for both different plane stress states and various temperatures up to 300 °C have to be known. Therefore, several experimental setups have been developed at the Chair of Manufacturing Technology (LFT) in Erlangen and they are used to determine the yielding behaviour of AZ31 as a function of stress state and temperature. With a special setup various stress states of biaxial tensions are applied on cruciform specimens that can be locally heated by a diode laser. Furthermore, an adopted shear test which has been initially described by Miyauchi is realised to obtain yield loci not only in the first, but also in the second and fourth quadrant of the yield locus diagram. Since magnesium alloys are known to show the strength differential effect (SDE) also uniaxial compression test are evaluated and so two points of the third quadrant are determined. For verifying the results of the biaxial tension test one further test is done: The uniaxial tensile test is obtained to check the results which are evaluated for tensile bars drawn by the biaxial setup. Finally, not only the yield loci, but also the real stress-strain curves for the different stress states are shown in this paper in order to give a comprehensive description of the material behaviour of AZ31.
APA:
Hußnätter, W. (2008). Yielding of Magnesium Alloy AZ31. In ICTP (Eds.), Proceedings of ICTP2008 (pp. 109). Hanrimwon Publishing Co..
MLA:
Hußnätter, Wolfgang. "Yielding of Magnesium Alloy AZ31." Proceedings of the Proceedings of ICTP2008 Ed. ICTP, Hanrimwon Publishing Co., 2008. 109.
BibTeX: Download