1st International Conference on Applied Engineering and Natural Sciences, Konya, Turkey, 1 - 03 November 2021, pp.507-511
Metal matrix composites are easier to machine due to the hard particles present in them, the non-traditional abrasive water jet (AWJ) method thanks to the features such as high velocity water, high velocity sand abrasives sent on the workpiece and high-pressure impact erosion. In this text, the production and machinability properties of hybrid nanocomposites based on Al2024 alloy containing B4C and SiC reinforcement particles in different ratios were investigated. The AWJ machining method used in the study was applied with fixed parameters (water pressure: 400 MPa, traverse rate: 100 mm/min, abrasive flow rate: 400 g/min). Surface roughness (SR) and material removal rate (MRR) values of each of the hybrid nanocomposite samples were found. In addition, the surface hardness values of each sample were recorded before and after the AWJ machining application. After machining, surface morphologies obtained from hybrid nanocomposites were investigated in scanning electron microscopy and chemical analyzes were investigated in energy dispersive spectroscopy. Experimental results showed that MRR values decreased, and SR values increased with the addition of reinforcement particles. According to the MRR results, 4 wt.% Al2024-B4C/SiC nanocomposite machined with the AWJ technique has a minimum MRR value (0.0221 mm3/min). While the SR value of the Al2024 base sample was 2.431 μm, the SR value of the 4 wt.% hybrid composite was found to be 3.203 μm.