Three different and very small amounts of alumina (0.2, 0.3 0.5 wt. %) in two sizes (approx. 25 100 nm) were used to enhance the wear characteristics ZA-27 alloy-based nanocomposites. Production was realised through mechanical alloying pre-processing compocasting processes. Wear tests under lubricated sliding conditions on a block-on-disc tribometer, at speeds (0.25 1 m/s), normal loads (40 N) ...

-The present investigation is based on the effect of thermal residual stresses on the both thermal expansion and damping behavior of Al/Al2O3 Metal Matrix Composites (MMCs) processed by compo casting. Thermal expansion and damping properties have been studied experimentally as a function of temperature over a temperature range from room temperature to 400°C both in the heating and cooling cycle...

Metal matrix composites (MMCs) belong to a group of modern materials owing their excellent technological, mechanical, and physical properties such as wear corrosion resistance, high electrical thermal conductivity, improved strength hardness. Final MMCs are affected equally by all steps its manufacturing process. It is shown that using adequate process parameters obtain starting (reaching the s...

This paper presents an experimental design approach to the process parameter optimization for compocasting of A356-SiCp composites. Toward this end, parameters of stirring temperature, stirring time, stirring speed and SiC content were chosen and three levels of these parameters were considered. The D-optimal design of experiment (DODE) was employed for experimental design and analysis of resul...