Evolution and Advancements in Titanium Alloys for Biomedical Applications: a Focus on Nanoparticle Enhancements

Titanium (Ti) alloys have been extensively studied for biomedical applications due to their superior mechanical properties, corrosion resistance, and biocompatibility. This review comprehensively synthesizes current advancements in Ti-based alloys, including pure Ti, commercially available Ti6Al4V, and modified Ti-Nb-Zr-Fe alloys. Particular attention is given to the influence of alloying elements and processing techniques in enhancing these materials’ mechanical and biological properties. The role of specific nanoparticles in improving corrosion resistance, reducing Young’s modulus, and optimizing wear behavior is examined in detail. While significant progress has been made, the precise mechanisms governing these enhancements remain underexplored. This study critically analyzes existing data to highlight knowledge gaps and research opportunities, to advance Ti alloy development for medical applications. By addressing these challenges, researchers can refine Ti alloys to meet the increasing demands of orthopedic implants, dental prosthetics, and cardiovascular devices.