Machinability Studies on Al–Fe–Si Alloy-Based Composites

Abstract

AbstractThis chapter presents the effect of machining parameters on wire cut electric discharge machining (WEDM) performances of Al–Fe–Si alloy (AA8011) composite by employing the signal-to-noise (SN) ratio and ANOVA analysis. The AA8011 matrix composite reinforced with 10wt.% TiO2 particulates was fabricated via stir casting route. The microstructure of the developed composite was analyzed through scanning electron microscopy (SEM), and it was ensure that the inclusion of reinforcement particles homogeneously distributed over the matrix alloy. The machining performances such as material removal rate (MRR) and surface roughness (SR) of the fabricated composite was investigated by WEDM process. The experimental work was executed based on L9 (33) orthogonal array design by chosen three input parameters namely, discharge current (Ip), pulse-on time (Ton) and pulse-off time (Toff) each at three levels. According to the SN ratio results, the higher MRR found to be 8amps Ip, 118 µs Ton and 54 µs Toff, similarly the lower SR obtained at 4amps Ip, 110 µs Ton and 54 µs Toff, respectively. ANOVA result reveal that Ip was the most influencing factor on MRR and SR, followed by Ton and Toff, respectively.KeywordsAl–Fe–Si alloyTiO2CompositeWire EDMTaguchi techniqueANOVA