Development of Al Based Metal Matrix Composites

This study aims to formulate and develop hybrid particle reinforced Al-metal matrix composites using stir casting method, a novel fabrication process in Bangladesh to fabricate metal matrix composite. Also, followed by investigation of its the physical, mechanical, morphological and machinability characteristics of the developed metal matrix composites. Three unique compositions of composites have been obtained by varying the wt. % amount of carbon nanotube, alumina and silicon carbide particulate reinforcements respectively 1%, 2.5% and 2.5%. Various mechanical properties, essentially the tensile strength, flexural strength, hardness, impact resistance; and physical properties like porosity, and density were tested; and a morphological and machinability study has been carried out for investigating the performance of the newly developed composites. The study showed that there was an 128.57% increment of tensile strength, an 7.1349% increment of hardness, an 45% increment of impact resistance, and a 0.8301% reduction of density by adding the particulate reinforcements in aluminum metal matrix composite.