Thermal-properties of lead and graphite dispersed rheocast aluminum silicon alloys by laser flash technique

Abstract

Aluminium-Silicon alloys have high wear resistance and are being used for bearings and pistons. Lead and graphite have been introduced into these alloys in the present work through the rheocasting technique and thermal properties of these alloys have been measured. Microstructural details of the rheocast alloys have also been incorporated. It has been demonstrated that the thermal conductivity and specific heat of rheocast Al-Si alloys increase with temperature unlike the other metallic alloy systems which show decreasing conductivity