Tool Wear and Surface Integrity of γ-TiAl Cryogenic Coolant Machining at Various Cutting Speed Levels

High-speed machining of γ-TiAl alloy is a significant challenge due to high cutting temperatures. From the perspective environmental protection and improving tool life, appropriate cooling strategies should be adopted. Compared with dry conventional flood conditions, feasibility in cryogenic LN2 conditions was discussed. The force, wear its mechanism, surface roughness, as well sub-surface morphology characteristics, were studied by combining macro micro techniques. results revealed that rake flank face under three media shows different degrees. crater expanded at speeds then progresses into more serve flaking notching wear. main pattern on gradually transformed from adhesive diffusion oxidation machining. In condition, workpiece elements cutting-edge restrained. still mainly addition, advantages reducing suppressing heat-affected zone, quality, inhibiting micro-lamellar deformation.