Effect of Loading Temperature on Processed Surface of Ni3Al-Based Alloy by MD Simulation

L Jin and KQ Li and TH Yi, RARE METAL MATERIALS AND ENGINEERING, 53, 1011-1020 (2024).

DOI: 10.12442/j.issn.1002-185X.20230552

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.

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