Biomedical Applications of Titanium and Aluminium based High Entropy Alloys

Abstract

High entropy alloys are a subclass of metallic biomaterials whose biomedical applications are vigorously explored in recent times due to their excellent mechanical properties and biocompatibility. Most of the current biomaterials are a tradeoff between biocompatibility and mechanical properties or tribological properties. For overcoming this problem, high entropy alloys are introduced into the field of biomaterials. They arise because of development in modern technologies especially, processing technologies such as Arc melting, RF magnetron sputtering, powder metallurgy, vacuum arc melting, cold rolling, selective laser sintering, etc. The gross resultant properties of high entropy alloys are a function of the composition of the metals used, processing methods, compatibility between the alloys, and many other parameters. Hence, in the following review the factors that affect the overall properties of high entropy alloys that are made up of titanium and aluminum along with their mechanical properties, tribological properties are discussed for their application in many load-bearing areas in a human body.