Wear studies on wrought and heat treated Nimonic, Titanium and Superco super alloys

Superalloys have great oxidation resistance, in many instances, but not enough wear resistance at higher temperature working environment. Superni-75, Superco-605, and Titanium-31 which are the candidate material used for turbine blade applications under high temperature oxidative environment are used in present study to evaluate its friction and wear properties. The materials are characterized with respect to its microstructure and hardness. The samples are heat treated in the muffle furnace. The wrought and heat treated samples are subjected to adhesive and abrasive wear in Pin on disc tribometer. The coefficient of friction for both wrought and heat treated materials shows a decrease in trend with the increment in load. The wear resistance of heat treated material is lower when compare to wrought material at higher load. The wear resistance of Superco-605 is superior in comparison to Superni-75 and Titanium-31. The specific wear rate observed during dry sliding wear test found to be very less in comparison to abrasive wear with SiC paper.