Effect of Thermohydrogen Treatment Temperature on Machinability of Ti6Al4V Alloy

The temperature of thermohydrogen treatment for the testing workpieces respectively was 650°C,750°C,850°C. By turning testing workpieces of different hydrogen content Ti6Al4V alloy, measuring cutting force and surface roughness as well as observing chip morphology, the effect of themohydrogen treatment temperature on machinability of Ti6Al4V alloy has been studied. Results of this experiment indicate that machinability of Ti6Al4V alloy improves with increasing the temperature of thermohydrogen treatment at the range of experimental temperature.