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SPP 1168:  Extending the Range of Applications for Magnesium Alloys

Subject Area Materials Science and Engineering
Term from 2004 to 2010
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 5472096
 
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.
The main focus of the Priority Programme is set on new magnesium materials and advanced processes. The research programme is focussed on following topics:
-- systematic investigations on influence of micro alloying elements in common and new alloys
-- microstructures evolution during solidification and processing
-- relationship between microstructure and processing parameters in accordance to process and microstructure modelling, fracture mechanics
-- modelling of materials properties for latter use in modelling of components
-- development of innovative joining technologies for monolithic and dissimilar materials
-- systematic investigations on corrosion behaviour of new alloys focussed on micro alloying and use of advanced processing routes including joining
-- development of suitable surface coatings for optimised corrosion and wear behaviour
DFG Programme Priority Programmes
International Connection Austria

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