Magnesium Recycling System Prepared by Permanent Mould- and High Pressure Die Casting

Due to changing legislation and an increasing use of magnesium alloys in the automotive industry magnesium recycling will get more important in future. Treating end-of-life vehicles often means shredding. Separating the resulting magnesium scrap according to chemical compositions is complex and expensive. Therefore it would be useful to define alloys made from blended post consumer scrap. For creep resistant alloys the weight per component is usually high and a secondary alloy is reasonable. The scenario of blended post consumer scrap from different heat resistant magnesium alloys was realized by modifying the AM50A alloy with varying additions of Ca, Si and Sr. After preparing a matrix of potential recycling systems via permanent mould casting, four alloys including the unmodified base material were selected for further processing via high pressure die casting. The materials properties are compared with regard to the processing techniques.