Research on diffusion wear mechanism of WC tool cutting Al2024 based on MD

Al2024 belongs to a typical Al-Cu-Mg series alloy. It has the advantages of high-strength, low-specific gravity, stress resistance, corrosion good heat and high fatigue resistance. is widely used in aerospace, automobiles, ships, chemicals, other fields. Aluminum alloys play pivotal role industry manufacturing. Cemented carbide tools are often processing aluminum alloys, diffusion wear prone occur during processing. great significance study phenomenon WC process cutting for improving tool life workpiece surface machining accuracy. In this paper, based on molecular dynamics (MD) simulation method, model were established, Morse potential parameters between atoms calculated, mechanism was studied. Through displacement nephogram tool-worker X direction, it found that have tendency diffuse tool. Using mean square (MSD) velocities Al, Cu, Mg obtained. The results show activation energy atomic vacancies at grain boundary smaller than lattice, more likely diffuse, rate fastest. total single analyzed, required elements into Al lattice satisfied.