Experiment Study on Friction Behaviour of Ti-6Al-4V Alloy for Hot-working

Abstract

Abstract. The friction behaviour between blank and die plays an important role in the precision forging process. Hence, the friction behaviour between Ti-6Al-4V alloy and K15 is studied to analyse the friction mechanism and characterization. The significant differences and influence law of temperature, sliding velocity and normal load on coefficient of friction (CoF) were studied through orthogonal tests. The range analysis and analysis of variance show that CoF is affected by normal load most, followed by sliding velocity and temperature. The worn-out appearances and composition analysis show that friction mechanism converts from dry friction to viscous or shear friction under a certain condition.