Fabrication of Aluminium 6061- SiC-Al2O3 MMC and HMMC by Strir Casting Technique and Comparing the Mechanical Properties

Aluminum alloys are extensively used in aerospace and automobile industries owing to their low density and good mechanical properties, superior corrosion resistance and wear, low thermal coefficient of expansion as compared to usual metals and alloys. From the collected literature, it is found that, metal matrix composites are considered as prospective materials and hence it is mainly used to replace usual materials in aerospace and automotive applications. The advantage of MMCs is that, it can have light weight as well as at the same time, it can be hardened and strengthened by reinforcing it with hard ceramics reinforcements like Sic, Al2O3 etc. In this work, aluminium is selected as matrix due to its low weight, good weldability and good mechanical properties. The aim of this project is to fabricate material for the applications of engine piston, bumpers and test the mechanical properties such as hardness, Impact strength and wear resistance. In this work, the stir casting method was used to fabricate the composite which is a liquid state process. After that various mechanical testing is conducted and comparison is carried out.