Experimental study on fracture mechanism transformation in chip segmentation of Ti-6Al-4V alloys during high-speed machining
AbstractTi6Al4V alloy is one of the typically difficult-to-machine materials which is widely used in aerospace industry. During the machining process of Ti6Al4V alloys, serrated chips are easily formed and would influence cutting forces significantly. In this study, the variation of cutting forces of Ti-6Al-4V alloys during high-speed milling from 50–500 m/min is investigated, and the fracture mechanisms and microstructure evolution of chips are analyzed by optical microscope (OM), scan electron microscope (SEM) and transmission electron microscope (TEM).