Abstract：Particle reinforced aluminum matrix composite has an excellent physical and mechanical performance, and it is widely used in aviation, aerospace and military, etc.But the further application of the materials is hampered owing to its difficultly machining characteristics.The machining performances of high volume SiCp/Al MMCs were studied by ultrasonic milling.The influences of the milling parameters on the milling force were investigated in the experiment.In addition, the wear mechanism of tool was analyzed in ultrasonic milling and the reasonable cutting parameters were obtained.The results show that the cutting force, abrasive wear were reduced, and tool lives were increased effectively during ultrasonic milling of SiCp/Al MMCs.

Keyword：high volume SiCp/Al composites;cutting force;ultrasound vibration milling;tool wear;