SPP 1168: Extending the Range of Applications for Magnesium Alloys

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Besides advantages e.g. like superior specific strength and excellent processability the potential of magnesium alloys is limited due to their low mechanical properties at elevated temperature, low creep resistance, and reduced corrosion behaviour especially in galvanic contact with other metallic materials. Actual developments are showing the possibilities to improve these properties by using modern alloys and processing routes. While cast products are having a majority of applications using magnesium alloys, the use of wrought magnesium is increasing. Therefore alloy development, feedstock control and development of suitable processes for manufacturing large scale extrusions or sheets are under research at the moment. A better understanding of influence of processing routes and deformation processes on microstructure and properties has to be the scientific issue in combination with simulation and modelling of processes and properties. Connected to the ongoing research in cast and wrought magnesium materials the corrosion behaviour of these materials in standalone uses or in galvanic couples with other metallic materials are gaining an increasing interest. New coating systems in accordance to the chosen applications have to be developed for magnesium alloys to increase the use of magnesium in transportation industries in future. These works also need to be coordinated with new processes for joining magnesium alloys with similar and dissimilar metals and alloys to achieve a broad spectrum of materials that reach the requirements given by transportation industries.