Effect of chemically accelerated vibratory finishing on the corrosion behavior of Laser Powder Bed Fusion 316L stainless steel

As-built surface morphology and texture of Additively Manufactured (AM) metal parts reduce their mechanical corrosion properties. One chemically accelerated vibratory finishing (CAVF) technique employs a chemically-based stepwise process to gradually remove roughness without the need for significant manual manipulation. While this procedure is effective at producing smooth surfaces, response resulting unknown. This study evaluates effect on mechanisms 316L stainless steel fabricated using Laser Powder Bed Fusion (L-PBF) AM techniques. The results show that CAVF does not obviously change microstructure but imparts residual compressive stresses which improve breakdown potential compared other specimens evaluated. Further, removed Cr3C2 precipitates formed during heat treatment. improves finish properties with an added benefit enhancing processed parts.