55 Machinability Aspects of Difcult-to-Cut Materials
rev with constant cutting depth of 2 mm. As titanium has less machinability index, the
surface nish was not of good quality. The value of surface roughness was in the limit
of 6 microns. When SEM was taken, severe microstructure alteration was observed.
Umbrello [17] studied the nite element analysis of Ti-6Al-4V during HSM. The study
deals with the cutting force, tool wear, segmented chip formed, and the morphology of
the chip. Material characterization for FEM analysis was done by using Johnson–cook
material model equation. To study the behavior of titanium alloy during HSM, three
different sets of material constant were being implemented. ...