Investigation of Mechanical and Tribological Behaviour of Dual Particles Reinforced Al Matrix Composites

摘要

In the present scenario, dual particles reinforced aluminum matrix composites have a vast number of applications in aerospace, marine, transportation, structural and non-structural applications like drive shaft, connecting rod, piston and brake drum. The main objective of this work is for evaluating the mechanical and the tribological behavior of aluminium oxide and graphite particulate reinforced with AA6351 composites were prepared by liquid metallurgy route (Stir casting). Hardness and tensile strength of the composite and the base alloy were investigated. The microstructure of manufactured composite and the base alloy were examined by an optical microscope. Optical microscopy analysis confirmed the nearly uniform distribution of Al_2O_3/Gr twin particles in Al matrix. The tensile strength and hardness of the composites have significantly improved by the presence of Al_2O_3/Gr.