A new insight into pitting initiation in selective laser melted 316L stainless steel

Deeparekha Narayanan,Lin Chen,Bilal Mansoor,Homero Castaneda

Materials Letters（2023）

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摘要

•Increasing the laser power at a low scan speed improved the corrosion resistance.•Higher laser power sample showed low icorr and high repassivation potential.•Increasing the scan speed increased defects and lowered corrosion resistance.•Pits initiated at melt pool boundaries and by dissolution of cell interiors.•Linking up of dissolved cell interiors possibly caused pit propagation.

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关键词

Pits,Stainless steel,Selective laser melting,Corrosion

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