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TU-Clausthal Centre for Material Technology

Basic investigations of dispersion-reinforced Al-Si casting alloys produced by melting metallurgy for applications in engine construction

Project leader: Prof. Dr.-Ing. Babette Tonn and Prof. Dr. Werner Riehemann

Funding period: 2010 - 2014
Funding agency: DFG, Bonn
Funding code: -

Contact: Dr.-Ing. Hennadiy Zak and Dr.-Ing. Alla Kasakewitsch

The aim of this research project is the fundamental development of technological measures for the optimal melting metallurgical production of dispersion-reinforced Al-Si casting alloys for temperature-stressed engine components. For this purpose, the process chain is considered holistically - from the production of suitable master alloys for the effective introduction of TiC and SiC particles smaller than 1 micrometer into the melt, through the alloy composition and the process parameters during melting and casting, to the influence of the dispersoids on the microstructure and mechanical properties of the Al-Si casting alloys both at room temperature and at temperatures of up to 400°C. A better understanding of the influence of reinforcing particles smaller than 1 micrometre on the mechanical and casting properties of Al-Si alloys will make it possible to develop new alloys or alloy variants with specifically optimized properties and to offer more advanced solutions for the production of dispersion-reinforced castings.