چكيده به لاتين
Metal Matrix Composites (MMCs) are made of non-metallic (mainly ceramics)
reinforcements and metal matrixes. These composites have desirable hardness, wear and
fatigue resistances, and are relatively light weighted. MMCs are used in various products and
industries, including automobile manufacturing, aerospace, military, and etc. Due to their
extraordinary mechanical and physical characteristics, high costs and the abrasive particles
found in them, machining of MMCs is considered a complicated research topic and requires
further studies. Few researches have been done about the effects of cooling methods on the
wear and tool life, arguing that whether to use or not the cutting fluid in the machining of
these materials has made a controvertial subject in the literature. In this research, the effects
of using cooling methods and cutting fluid while machining MMCs, on the wear of rake face
and tool flank, and on the cutting force applied to coated carbide tools, as well as the surface
roughness of the workpiece has been investigated. The surface roughness value for both
composite materials was less than 0.3 microns which is appropriate for milling process, and
indicates that a relatively good feed rate has been selected. At the end of the research, the
cooling method proves to be efficient in reducing the wear of carbide tools. It is also found
that the wet method has the best effect on reducing the tool wearing process.
