Graded Metal Matrix Composites Produced by a Multi-Pouring Method with Controlled Mold Filling

An FGM of technical aluminium silicon and a SiC-particulate reinforced aluminium material had been fabricated by successive casting of two melts. Numerical simulation was used to support process optimisation. Element concentration and optical measurements had been used in analysing graded interfaces. Standard tests for mechanical properties, heat treatment and thermal shock tests showed an improved behavior of graded compound castings in comparison to conventional compound castings.