The production and evaluation of a pressure die-cast, graphitic, hypereutectic aluminium–silicon alloy

The principal aim of this research was to utilize the newly-developed technology of processing partially solid alloys as a means of dispersing untreated graphite particles in a hypereutectic aluminium–silicon alloy. The optimum conditions for the dispersion and retention of graphite particles in the alloy were evaluated together with the suitability of cold chamber pressure die-casting as a method of producing castings from the alloy composite. The second aim of the research was to obtain information and data on the mechanical and tribological properties of the hypereutectic aluminium-silicon alloy (LM30) containing graphite particles since the presence of graphite was expected to contribute low frictional losses and improved wear resistance to the already exploited properties of excellent corrosion resistance and thermal conductivity. [Continues.]