Nanofabrication and influences of titanium carbo-nitride coating tool on machinability behaviour of magnesium alloy nanocomposite

The trend of AZ31 alloy matrix composites is excellent in aerospace and orthopaedic applications because they provide excellent corrosion resistance, less weight, good vibration resistance, and superior fracture toughness during the machining operation, tool wear, and poor surface finish due to the presence of a non-homogenous abrasive particle in a soft matrix. This research attempts to investigate the machinability behaviour and study the influences of titanium carbo-nitride (TiCN) coating tool insert on tool wear and surface quality of AZ31/6wt% TiC alloy nanocomposite turned by CNC turner under the feed rate of 0.2 mm/rev, 1000–1500 rpm speed, and varied depth of cut of 0.5 to 2 mm. With the help of a pistol thermometer and dynamometer, the temperature and TiCN coating tool wear are monitored. After turning, an optical-type surface roughness tester machine measures each pass’s surface quality. According to the evaluated results, the 1000 rpm with 0.5 mm depth of cut and 0.5 mm/rev feed is found to lower wear tool wear of 0.019 mm and 1500 rpm with 0.5–1 mm depth of cut and 0.5 mm/rev feed spotted lower surface roughness of 0.67 to 0.71 µm. Finally, the optimum tool wear surface was investigated by scanning an electron microscope to spot the nature of the tool wear oxidation.