AN EXPERIMENTAL INVESTIGATION AND VALIDATION OF THERMO-ELASTIC MODELS ON THERMAL CONDUCTIVITY BEHAVIOUR OF Al 6061-SILICON CARBIDE-GRAPHITE HYBRID METAL MATRIX COMPOSITES

S Krishna, T Shridhar, L Krishnamurthy
2016 International Journal of Scientific Research Engineering & Technology (IJSRET)   unpublished
Metal matrix composites are regarded to be one of the most predominant classifications in composite materials. The thermal characterization of metal matrix composites by using laser flash apparatus is a sophisticated technique meant for the determination of thermal diffusivity and thermal conductivity. In this research paper, the determination of thermal conductivity and thermal diffusivity have been accomplished for Al 6061, Silicon Carbide and Graphite hybrid metal matrix composites from room
more » ... omposites from room temperature to 300°C. Aluminium based composites reinforced with Silicon Carbide and Graphite particles have been prepared by stir casting technique. The results have indicated that, the thermal conductivity and thermal diffusivity for different compositions of hybrid MMCs decrease by the addition of Graphite with Silicon Carbide to the matrix alloy Al 6061. Empirical or thermo-elastic models viz., rule of mixtures, series model, geometric model and Maxwell's model have been validated for the evaluation of thermal conductivity of composites.
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