Investigation on Surface Roughness of Aluminium (Al7050/TiC/BN) Composite Through Wire Electric Discharge Machining

Aluminium metal matrix composite is known for its enhanced performance with the addition of hybrid reinforcement. The present work was carried out to estimate surface roughness on Aluminium Al7050 matrix with different percentages of Titanium Carbide (TiC) and Boron Nitride (BN) as reinforcement. The machining parameters such as pulse on, pulse off and wire feed were considered in Wire Electric Discharge Machining (WEDM) and a potable tester was used to measure the surface roughness. The experimental analysis was performed by optimizing the process parameters through the Taguchi method of design of experiments. An ANOVA table and Regression equation were framed using ‘Design experts 13’ to study the influence of process parameters on surface roughness of AL7050/TiC/BN composite. The results have revealed that TiC is the most influencing parameter on surface roughness while the wire feed has a less significant effect.