Effect of cutting fluid on the machinability of metal matrix composites

Abstract This paper utilizes models for cumulative tool wear to study the effect of cutting fluid on the machinability of aluminum-based matrix composites reinforced with SiC or Al 2 O 3 particles. Pressurized cutting fluid neither improves nor worsens the tool life because of either effective flushing of the chips or lack of a lubricating film. The surface finish and the cutting forces are insensitive to cutting fluid and cutting speed when machining with a new diamond tool, but deteriorate with greater tool wear.