Abstract
The cast magnesium alloys as AM50 offer a good strength, ductility and surface finish for
automotive industry. But the poor creep resistance limited its application to power components such
as engine and transmission cases at temperatures in excess of 100°C. In order to investigate the cyclic
creep behavior of Magnesium Alloy at high temperature, creep tests of plate specimens AM50 were
conducted in this work. Based on the analysis about the microstructure and defects of AM50 under the
condition of cyclic creep, a cyclic creep constitutive model with isotropic and scalar damage
parameter was developed. Furthermore, the proposed model was experimentally verified by analyzing
the cyclic creep and recovery response of Cast Magnesium alloy under cyclic loading with dwell time.
Comparisons between calculated results and experimental data showed good agreement.
Publisher
Trans Tech Publications, Ltd.