Experimental Study on CNC High-speed Milling of Microstructure and Surface Quality of Titanium-aluminum Alloys
This paper investigates the microstructure,hardness,tensile properties of cast titanium-aluminum alloy(TiAl),and the influence of cutting parameters on cutting forces and surface roughness during milling processes.The re-sults reveal that the microstructure of TiAl alloy primarily consists of γ-TiAl and α2-Ti3Al phases,exhibiting high micro-Vickers hardness.Tensile properties at room temperature exhibit notable instability,demonstrating characteristics of near-brittle fracture and lower elongation.The study elucidates the impact of cutting parameters(cutting depth and cutting width)on cutting forces and surface roughness.Increased cutting depth and width lead to higher cutting forces and in-creased surface roughness,consequently reducing surface quality.The optimal parameters for surface quality and cutting forces are found at an axial cutting depth of 5mm and a cutting width of 1mm.These research findings not only enhance our understanding of the microstructure and properties of cast titanium-aluminum alloys but also provide valuable insights for fu-ture research and engineering applications.
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维普
