الفهرس 
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Abstract
Metal matrix composites (MMCs), as light and high strength materials are very attractive for applications in different industries. The major problem encountered during the machining of composites materials are the flank tool wear, cutting forces and surface roughness.
So the aim of the present study is to investigate the machinability of the metal matrix nano-composites (MMNCs) through dry turning operations. Composites specimens manufactured from aluminum alloy metal matrix and reinforced with different weight fractions of silicon carbide nanoparticulates were used to conduct the experimental work. A stir-casting method followed by squeezing technique were used to fabricate the nanocomposites specimens. The machinability tests were conducted through different cutting conditions using carbide inserts tools material. The machinability parameters such as surface roughness of the machined specimens, types of chip, cutting forces, and tool wear are investigated through the chosen cutting conditions.
The results show a reduction in surface roughness by increasing the cutting speed and the weight fraction percent of the SiC nanoparticulates. The cutting force components as well as tool flank wear are increased by increasing the weight fraction of SiC nanoparticulates. Moreover the force components increased with increasing the feed rate and depth of cut, however the cutting force components are decreased by increasing the cutting speed while the flank wear increases.