Abstract: The utility of Additively Manufacturing (AM) Stainless Steel (SS) elements is swiftly rising in a extensive spectrum of industries. Laser Powder Bed Fusion (LPBF) and Direct Laser Deposition (DLD) are the primary AM techniques to manufacture a widespread variety of SSs like 316 L, AISI 420, 17-4 PH, 304 L, and AISI 4135. This article specializes in the corrosion overall performance of additively manufacturing steel made of LPBF and DLD. The passive movie formation mechanisms and the corrosion overall performance of LPBF/DLD AM SS elements are mentioned in assessment to their conventionally made counterparts. Microstructural functions like porosity, inclusions, residual stress, floor roughness, elemental segregation, phases, and grain length distribution are elaborated very well from the corrosion factor of view, intently connected with the AM processing parameters. Generally, process parameters play a critical function with inside the corrosion properties of AM elements via way of means of impacting the microstructural functions. Assuming a right set of parameters for the printing process, the general corrosion overall performance of AM SS is higher than its traditional counterparts. However, there are nonetheless controversies round a few critical aspects including passive film structure, the character of residual stress, put up warmth remedy processes, and grain length distribution and their effect on corrosion overall performance, which emphasizes the want for future research on this area.

Keywords: Corrosion; Additive manufacturing; Stainless steel; Laser powder bed fusion; Direct Laser deposit.

| DOI: 10.17148/IARJSET.2022.9706