Wear Mode Comparison of High-Performance Inconel Alloys

Abstract

Inconel alloys have been used as engineering materials in high temperature and high stress applications due to their excellent mechanical properties. Tribological performances of these alloys, however, have not been conducted extensively. This is because in tribological applications, these materials have not often been utilized in friction and wear-related applications, resulting in a deficiency in the characterization of their tribomechanical properties. In the present research, we investigate the mechanisms of tribological performance of two different Inconel alloys in terms of contact pressures and sliding speeds. We studied their frictional behavior. The wear data were plotted against the pressure×velocity (PV parameter) in order to investigate the changes of surface properties and wear behaviors of the same under the influence of mechanical energy input. It was interesting to find that the wear mechanisms were influenced by the process of tribotesting. There are three competing wear mechanisms found, abrasion, adhesion, and oxidation. Each of those dominates the tribological performance under different conditions.

Plasma-Texturing Surface Treatment of Grey Cast Iron for Friction Reduction

“…And the wear debris generated from the ball and the cast iron act as hardened grits. The action imposed on these grits from the reciprocating ball caused them to be pushed through the cast iron surfaces, generating plough regions through third body abrasive wear [18]. The U2 sample was affected more by the third body abrasive wear, because some parts of the cross-hatching tracks plowed and destroyed by the motion of the steel ball can act as the grits and cutting small grooves.…”

Characterization and wear properties of plasma sprayed Cr3C2 and Stellite coatings on Inconel 625

“…Inconel 625 is chosen as the substrate material because of its exceptional corrosion resistance, high strength and creep resistance on persistent contact with hostile environment [3]. Among the various thermal spray coating processes, plasma spraying proves to be the most versatile and effective coating techniques to increase the wear resistance [4,5].…”

Structure and Properties of Metal-Matrix Composites Based on an Inconel 625–TiB2 System Fabricated by Additive Manufacturing

“…Thanks to their mechanical properties, Inconel alloys have a good record as functional materials used at high temperatures in chemically aggressive environments and under high loads [1]. The development of additive manufacturing technologies has revealed the potential of these alloys as powder raw stock (initial powders for the production of materials) for additive manufacturing machines) [2][3][4].…”