【摘要】 在可替代性弱且常被用于制造航空发动机关键部件的前提下，钛合金等难加工材料的高效高质切削面临挑战。针对钛合金Ti–6Al–4V加工表面完整性不佳和使役性能有待提升难题，开展了钛合金Ti–6Al–4V的高速车削试验，分析了高速超声振动切削技术对钛合金Ti–6Al–4V表面完整性和已加工表面耐磨损性能的改善效果，进而为钛合金Ti–6Al–4V的高质量加工提供理论支撑。结果表明，相比于普通切削，高速超声振动切削有效降低了钛合金Ti–6Al–4V的表面粗糙度，提高了表面强度和表面残余压应力，以及增强了耐磨损性能。更多还原

【Abstract】 On the premise of weak substitutability and being often used to manufacture key components of aeroengine, high-efficient and high-quality machining of difficult-to-cut materials such as titanium alloys is facing challenges.Aiming at the problems of poor surface integrity and service performance of titanium alloy Ti–6Al–4V, high-speed cutting tests of titanium alloy Ti–6Al–4V were carried out, and the improvement of high-speed ultrasonic vibration cutting technology on the surface integrity and the wear resistance of machined surface was analyzed, thus providing theoretical support for high-quality machining of titanium alloy Ti–6Al–4V. The results show that compared with conventional cutting,high-speed ultrasonic vibration cutting effectively reduces the surface roughness, and improves surface strength, surface residual compressive stress and wear resistance of titanium alloy Ti–6Al–4V.更多还原