Investigations into electrical discharge machining of fabricated AA 6061/10% Al2O3 aluminium-based metal matrix composite using OFAT approach

Electrical discharge machining (EDM) process is one of the most commonly used non-traditional machining processes for difficult to cut materials like composites and in die making industries.The work piece material was AA 6061/10% Al 2 O 3 -based metal matrix composite which was fabricated with newly developed stir casting setup.After fabrication scanning electron microscopy, mechanical testing was carried out to test properties of composite material.In EDM process, the selected EDM input parameters were pulsed current (I), pulse on time (T ON ).One parameter at a time was studied to observe the responses with the variation in the selected input parameters.The metal removal rate (MRR) and gap size were observed as output responses in this experimental work.Experimental investigations showed that for higher MRR, there was high pulse current, high pulse on time.Similar effects were also observed for the gap size.