|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Surface Interactions in Materials
||M-27: Effect of Ultrasonic Vibration Assisted Laser Surface Texturing and Melting of Ti-6Al-4V ELI (Biomedical) Alloys on their Microstructural Evolution and Tribological Properties
||Sourabh Biswas, Seyyed Habib Alavi, Sandip P. Harimkar
|On-Site Speaker (Planned)
Biomedical implants are often subjected to continuous sliding action from neighboring hard tissues and therefore their tribological behavior in biological environments has incited significant curiosity in the scientific community. The present study is focused to understand the effect of laser surface texturing and melting with and without simultaneous application of ultrasonic vibrations on the tribological properties in simulated body fluid (Hank’s solution). It was observed that increasing ultrasonic vibration amplitude improved grain refinement, surface hardness and surface roughness. This increased hardness and roughness was observed to reduce both the coefficient of friction and wear rate indicating improved superior lubrication and wear resistance. Furthermore, a transition of the wear mechanism was observed from the analysis of the wear scars, with wear mechanism being predominantly abrasive in nature in the without ultrasonic vibration samples while the samples processed with ultrasonic vibrations exhibiting increase in adhesive wear behavior.
||Planned: Supplemental Proceedings volume