Casting-Based Production of Al-TiC-AlB2 Composite Material Through the Use of KBF4 Salt

High volume fraction TiC-AlB2 reinforced Al composite material has been produced by a casting process based on the use of KBF4 salt. The reaction between the salt compound led to the release of AlB2 precipitates in commercial purity Al melt whereas the improved wettability between the TiC particles and the formed slag caused their spontaneous entry. The resulting double reinforced composite showed no sign of severe TiC dissolution-reaction.