Abstract:The machining characteristics of LM25 Al/SiC_p composite using end milling was investigated. A comprehensive mathematical model was developed for correlating the interactive and higher order influences of various process parameters on the dominant machining criteria, i.e. the tool flank wear phenomena, through response surface methodology, utilizing relevant experimental data obtained through experimentation. Experimental plan was performed by a standard response surface methodology design called a central composite design (CCD). The results of analysis of variance (ANOVA) indicate that the proposed mathematical model can adequately describe the performance within the limits of the studied factors. Optimal combination of these parameters can be used to achieve the minimum tool flank wear.

Key words: end milling; metal matrix composite (MMC); response surface methodology; optimization