Tribology of Ti6Al4V: A review

Abstract

The deleterious innate attribute of Ti6Al4V, the workhorse material among the alloy series of titanium is its incompetent tribo-behavior. Infinite surface modification techniques, viz., the accretion of adherent appendage layers, diffusion hardening, infusion of residual stresses, microstructural evolution, and phase transformations were attempted to enhance the wear resistance of the alloy. The need lies to establish a bridge between the indigenous material properties and the tribo-characteristics of Ti6Al4V so that the enforced improvement techniques can raise the barriers of its applicability. A critical review of the microstructural transitions, mechanisms governing tribo-behavior and the parametric conditions leading to material removal at dry sliding conditions of Ti6Al4V, falls under the scope of this manuscript. Hence, the prime focus of the approach is to impart a clear-cut perception of the minute variations in mechanical, metallurgical, and tribological characteristics of the alloy at interactive instances with distinct counter-body surfaces.

Fretting and Fretting Corrosion Processes of Ti6Al4V Implant Alloy in Simulated Oral Cavity Environment

“…On the basis of the received results, a new phenomenological model of fretting corrosion processes was proposed. This model involves the formation of an abrasive paste that is a combination of metal oxides and the organic components of saliva.Materials 2020, 13, 1561 2 of 17 and has been intensively investigated up to the present times [12,13]. Despite significant progress achieved in improving the quality of medical alloys, the price of a biofunctional material is often a decisive factor.…”

“…Materials 2020, 13, 1561 2 of 17 and has been intensively investigated up to the present times [12,13]. Despite significant progress achieved in improving the quality of medical alloys, the price of a biofunctional material is often a decisive factor.…”

Improvements in tribological and anticorrosion performance of porous Ti-6Al-4V via PEO coating

“…An abrupt decrease in potential was observed after the initiation of sliding, and it remained almost constant (at approximately -0.74 V Ag/AgCl ) until the end of testing. This is the typical tribocorrosion behavior of passivated Ti alloys [5,26]. The potential decrease is an indication of depassivation on the surface and the exposure of a new active surface to the electrolyte.…”

“…Therefore, many researchers have focused on the role of various electrolytes with elements such as Ca, P, Mg, Si, Zn, and Mn on Ti and Ti-6Al-4V. They demonstrated that the modified electrolytes provided higher resistance to corrosion and better osseointegration of dental implants [22,26,27].…”

Tribological analysis of wire additive manufactured Ti6Al4V by Electron Beam source

“…It is observed that the Ti-6Al-4V grouped under grade 5 exhibits a poor wear resistance and the alloy has an intended application in the different industries namely aerospace, defence, medical, automobile, marine and in sports equipment [15]. In particular, bearings of heavy duty vehicles, disc brakes, rotors and orthopedics application needs many needs an improved wear resistance of titanium alloy [11,16,17]. The titanium alloy is fabricated through additive manufacturing by prepositioned Ti-6Al-4V wires under different parameters and their in uence on the geometry of beads are investigated [18] Table 1.…”