Investigating the Impact of Shot Materials on Surface Roughness in Ti6Al4V Alloy-Based Bone Implants treated by Shot Peening Process

Abstract

This study explores the impact of different shot materials on the surface roughness of Ti6Al4V alloy-based bone implants treated with shot peening. Shot peening is a prevalent surface treatment method in the biomedical field used to enhance implant osseointegration. The choice of shot material can significantly influence surface morphology and, consequently, biological responses. This research examines the effects of various shot materials, including mild steel, stainless steel, glass beads, and alumina, on the surface roughness of Ti6Al4V alloy-based bone implants subjected to shot peening. Surface roughness measurements reveal distinct outcomes: glass beads result in the lowest roughness at 1.45 µm, while stainless steel leads to a higher roughness of 6.27 µm. These findings highlight the critical role of shot material selection in modulating surface characteristics essential for implant integration and performance. Understanding these variations provides valuable insights for optimizing implant design and enhancing biomedical applications. Key Words: shot peening, shot materials, surface roughness, Ti6Al4V alloy