Modelling of Flow Behaviour of Magnesium Alloys

The present paper aims at studying the flow behaviour of magnesium alloys under different conditions in terms of temperature, deformation velocities and deformation. The modelling approach was based on a proposed equation to model the shape of each flow curve through different variables. The modeled flow curves were subsequently compared with those obtained with experiments. The models were validated on flow curves not used in the building stage. It was observed that, for the high temperature, the flow softening has to be limited in order to allow the extrapolation queue required for elevated deformations. Also for low temperature values, high deformation velocities and deformations the final part of the flow curve has to be adapted in order to be utilized for the description of material in the numerical simulation. In other words they need to be extrapolated. The deformation value at which the extrapolation starts can be predicted with an other proposed equation detailed in the paper.