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Unexpected erosion-corrosion behaviour of 316L stainless steel produced by selective laser melting
journal contribution
posted on 2019-07-15, 00:00 authored by Majid Laleh, A E Hughes, Wei XuWei Xu, Ian GibsonIan Gibson, Mike Yongjun TanMike Yongjun TanThe erosion-corrosion behaviour of a near fully dense 316L stainless steel (316L SS), with relative density higher than 99.5%, produced by selective laser melting (SLM) has been evaluated, for the first time, in a jet impingement system. Although the SLM-produced 316L SS possessed superior pitting corrosion resistance and higher hardness, unexpectedly, it has shown lower erosion-corrosion resistance than its conventionally produced commercial counterpart. This behaviour has been related to weaker repassivation ability of the SLM-produced 316L SS mainly due to the presence of the SLM process-induced pores within the specimen.