Browse Publications Technical Papers 2016-01-0533

Optimisation of Process Parameters of EDM on Al6082/SiC Metal Matrix Composite 2016-01-0533

In the present investigation AA6082/ SiC MMC composite is fabricated using electromagnetic stir casting technique. Silicon carbide (SiC) of 40 μm size is used as reinforcement and is varied by weight percentage as 0%, 2.5%, 5%, 7.5%, 10% in alloy AA6082. The microstructure of the fabricated composite is studied by scanning electron microscopy (SEM) which shows even distribution of the reinforcement. The mechanical properties improve with SiCp till 7.5%, after that the properties decreases which may be due to presence of porosity during the composite manufacturing. A comparative study of mechanical properties such as tensile strength, hardness and toughness has been done between the composite and base aluminium alloy. After the comparative study it was found that the composite having AA6082/SiC-92.5%/7.5% is best suited. So, it is used for optimization of Electrical Discharge Machining (EDM) process parameters using Taguchi’s design of experiment. Process parameters of EDM are metal removal rate (MRR), surface roughness (SR) and tool wear rate. Using Taguchi’s parameter design, significant machining parameters affecting the performance measures are identified such as discharge current, and dielectric flushing pressure.L9 has been used to get optimal setting of control factors viz. current and dielectric flushing pressure for maximization of metal removal rate (MRR) and minimization of surface roughness (SR).The optimized value of MRR are 6 A current and 0.4 kg/cm2 flushing pressure as well as for the SR the optimized value are 4A current and 1.2 kg/cm2 flushing pressure.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Dry Sliding Wear Behavior of Al-B4C Particulate Reinforced Composites Produced by Powder Metallurgy Method


View Details


Development of P/M Titanium Engine Valves


View Details


Prediction of Draw Bead Coefficient of Friction Using Surface Temperature


View Details