Hybrid Aluminum metal matrix composites have become leading materials due to their excellent engineering characteristics and applications. In this experimental work, Al6061 based hybrid metal matrix composite is fabricated by stir casting process, where the „SiCp‟ and „Grp‟ are used as reinforcements. Due to the abrasive nature of reinforcements, the hardness of fabricated samples is increased, which was very much difficult to machine by traditional methods. Therefore, in this study an effective machining process (EDM - Electric Discharge Machining) is used for machining the developed metal matrix composite. This paper investigates the significant effect of EDM machining parameters like pulse-on time (T-on), pulse-off time (T-off), voltage (V) and current (I) on a response variable (TWR- tool wear rate). For machining, the fabricated samples, three different electrodes materials; Steel-304, Brass and Copper with a Ø12mm each were used. The design matrix is developed by Taguchi L27 approach in Minitab software. The ANOVA technique is used to check the signification of the model. The SEM (Scanning electron microscope) and EDS (Energy-dispersive X-ray spectrometer) were done to study the surface characteristics and elements analysis, respectively of the machined electrodes.
Volume 12 | 03-Special Issue
Pages: 915-922
DOI: 10.5373/JARDCS/V12SP3/20201334