Fretting Fatigue Improvement of Ti6Al4V by Coating and Shot Peening

摘要

Ion beam enhanced deposition (IBED) was employed to increase the fretting fatigue resistance of Ti6AI4V. CrN and TiN hard coatings were applied on the base material and shot peening was combined with the hard coatings to study the duplex effect on fretting fatigue resistance, The IBED coatings exhibited a good bonding strength. They did not spall off even after shot peening. However, an optimum composition of CrN showed better fretting fatigue resistance than that of TiN with the same processing parameters.