Abstract
The corrosion behavior of the {100}, {110}, {111} planes of a single-crystalline-like stainless steel 316L (SS316L) produced by laser powder bed fusion (LPBF) was investigated in 3.5 wt% aqueous NaCl and compared with their LPBF-polycrystalline and wrought counterparts. The general corrosion resistance followed: wrought ≈ {110} < polycrystalline < {100} < {111} trend, which was rationalized by the surface atom density and corrosion activation energy. All LPBF samples exhibited a significantly higher pitting corrosion potential than the wrought SS316L due to the lower concentration of oxygen vacancies in their passive oxide films. These findings provide insights into improving the corrosion performance by tailoring the crystallographic texture of LPBF-SS316L.
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