The single factor experimental method was used to the experiments of turning titanium matrix composites with PCD tools. The wear morphology and mechanism were studied. The results show that

within the cutting speed region of 15~60m/min

the cutting force gradually decreases from 473N to 367N

the cutting temperature increases gradualls from 274℃ to 564℃ ; the cutting distance increases from 390 m to 702 m and then reduces to 467 m and achieved the maximum at the cutting speed 45 m/min; the tool wear take place on the rake and flank face at the same time instead of a typical crater wear on the rake face

the typical strip wear take place on the flank face

both furrow grooves and titanium alloy occur on the rake and flank face; the tool wear is believed to be caused mainly by the abrasive wear and the adhesive wear. With the increasing of cutting speed

abrasive wear gradually weakenes while the adhesion wear is obvious.