Evaluation of Wear Properties of TiC Particulates Reinforced A12219 Alloy Composites.

In the present study, Al2219 - 2, 4 and 6 wt. % of TiC metal matrix composites were synthesized by Stir casting method. Microstructural analysis of Al2219-TiC composites was performed by using scanning electron microscopy. Microstructural characterization of the developed TiC particulates reinforced composites revealed uniform distribution of micro size TiC particulates in the base matrix. The wear resistance of metal matrix composites was studied by performing dry sliding wear test using a pin on disc apparatus. The experiments were conducted at a constant sliding speed of 600rpm and sliding distance of 2000m over a varying load of 0.5kg, 1kg, 1.5kg and 2kg. Similarly experiments were conducted at a constant load of 1kg and sliding distance of 2000m over a varying sliding speed of 600, 700, 800 and 900rpm. The results showed that the wear resistance of Al2219 - TiC composites was better than the unreinforced alloy. The wear rate was found to increase with the load and sliding speed. To study the dominant sliding wear mechanism for various test conditions, the worn surfaces were analyzed using optical microscopy. [ABSTRACT FROM AUTHOR]