Influence of Surface Finish on the Corrosion Performance of Additively Manufactured Stainless Alloys

This thesis investigates the effects of the Laser Powder Bed Fusion manufacturing process on the corrosion of both a high-performing corrosion-resistant alloy and a commodity stainless alloy. Thesis outcomes aim to provide a more holistic understanding of LPBF alloy corrosion to inform engineering standards on the use of these components in service. The effect of the printed surface's roughness was investigated as a factor in the initiation of pitting corrosion. Optimisation of laser parameters such as speed and the addition of border traces were investigated to improve the overall surface roughness and subsequent pitting corrosion outcomes.