Tool Wear Investigation in Dry and High Pressure Coolant Assisted Machining of Titanium Alloy Ti_6Al_4V with Variable α and β Volume Fraction

摘要

During machining of titanium alloys friction and cutting temperature plays vital role in determining the cutting tool performance. This work investigates the effectiveness of change in volume fraction of alpha and beta phase in the bimodal titanium Ti_6Al_4V on tool wear phenomenon. A detailed tool wear mechanism and micro structural analysis was performed for dry and high pressure coolant machining of Titanium Ti_6Al_4V to investigate the role of quench delay on machining performance. The analysis concluded that use of high pressure coolant was useful to overcome the difficulties relating to change in alpha and beta volume fraction during machining of Titanium Ti_6Al_4V.