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Recently, 316L stainless steel fabricated by selective laser melting (SLM) has been widely used in various fields; however, the influence of post-processing heat treatments on its corrosion resistance has not yet been fully clarified in the literature. In this study, the corrosion behavior of SLM-built 316L stainless steel is investigated in its as-built state and after various heat-treatments, and the results are compared with those of conventionally processed (wrought) 316L. Electrochemical measurements show that the SLM-manufactured specimens exhibit lower corrosion resistance than their wrought counterparts. Furthermore, neither stress-relief annealing at 650 °C nor solution (recrystallization) treatment at 1050 °C leads to a measurable improvement in the corrosion resistance of the SLM-manufactured material under the conditions investigated.
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Shapovalova et al. (2026) studied this question.
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