Effect of Loading Temperature on Processed Surface of Ni3Al-Based Alloy by MD Simulation
In order to enhance the nano-cutting surface quality of Ni3Al-based alloy to obtain better service state,the nano-molecule dynamics(MD)simulation and micro-cutting experiment were combined to investigate the effect of loading temperature(300-1050 K)on cutting force and surface morphology.MD simulation results show that the fluctuation of cutting force is the smallest when the loading temperature is 750 K during nano-cutting process of Ni3Al-based alloy,compared with that at other temperatures.When the loading temperature is 600-750 K,the number of convex atoms affecting the surface morphology is the least,which indicates that Ni3Al-based alloy can achieve higher surface quality at loading temperature of about 750 K.The micro-cutting experiments of Ni3Al-based alloy show that higher flatness of the processed surface can be obtained at the loading temperature of 600-750 K,which indirectly verifies the feasibility of MD simulation results of the nano-cutting process of Ni3Al-based alloy.Results suggest that selecting appropriate loading temperature is an effective method to improve the nano-cutting surface quality of Ni3Al-based alloy.