The present study systematically investigates the effects of surface nitriding treatment on the laser-assisted machining behavior of TC4 titanium alloy. Numerical simulations were conducted using the ABAQUS finite element platform to elucidate the influence of nitriding on cutting force, cutting temperature, and residual stress evolution. A three-factor, three-level orthogonal experimental design was established, considering nitriding concentration (0.2%-0.8%), laser power (500-1500 W), and laser scanning speed (50-90 m/min), to examine the coupled effects of these parameters. The results reveal that an increase in laser scanning speed leads to a reduction in both cutting force and cutting t... More >

Ti-6Al-4V titanium alloy (TC4) has been extensively applied in advanced manufacturing fields owing to its outstanding combination of mechanical properties and corrosion resistance. However, its poor machinability remains a critical challenge that limits further application. In this study, the effects of three categories of heat treatment processes, including annealing, solution treatment, and aging treatment, comprising eight specific heat treatment schemes, on the precision cutting performance of TC4 alloy were systematically investigated using DEFORM-3D numerical simulations. The results demonstrate that stress-relief annealing and full annealing effectively reduce cutting forces by up to... More >