· Composites ·
Subramanya. P. K, Sathyapal Hegde and K. Narayan Prabhu
Department of Metallurgical & Materials Engineering National Institute of Technology Karnataka,India
67th World Foundry Congress
The properties of cast metal matrix composites are largely dependent on
the solidification behaviour which is dictated by the thermophysical
properties of the melt, mould and the interfacial heat transfer from the
metal to the mould. In the present investigation the thermal analysis
parameters and heat transfer aspects of hypereutectic aluminium alloy
matrix composites were studied. As the vol% of SiCp increases the total
solidification time decreases and the cooling rate increases. The
morphology of the primary silicon was very much dependent on the
presence of SiCp. The estimated peak heat flux for the composites are
lower than matrix alloy melts solidified under similar conditions. The
particle size has a negligible influence on the cooling behaviour. However,
composite with finer particle size shows slightly higher peak heat flux.
