The role of post surface finishing on the surface quality and fatigue behavior of Ti-6Al-4V alloy produced via Laser Powder Bed Fusion Additive Manufacturing process

Metal Additive Manufacturing (AM) is an impressive approach revolutionizing industrial production. Originating with a virtual model, this method employs a layer-by-layer process in three-dimensional space, using metallic materials to create intricate components. Its key advantages include unparalleled design freedom, catering to the demands of high-precision sectors like biomedical, automotive, etc. Moreover, metal AM significantly contributes to sustainability by minimizing material waste, a stark departure from traditional manufacturing processes. Despite these advantages, challenges persist, notably in surface quality and mechanical performance in the as-built condition, requiring careful consideration of manufacturing parameters and strategic post-processing. In conclusion, while metal AM presents transformative possibilities, addressing challenges through strategic post-processing is crucial. This thesis constitutes a focused exploration into a specific aspect of post-processing: the impact of Tumble Finishing on the physical, microstructural, and mechanical properties of Titanium-6Aluminium-4Vanadium alloy fabricated through Laser Powder Bed Fusion (L-PBF). The ensuing experimental findings reveal the remarkable efficiency of Tumble Finishing in enhancing the surface quality, and therefore improving fatigue performance of specimens.