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Volume 15
Issue 4
10.3390/ma15041353
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Article

Effect of Laser Speed and Hatch Spacing on the Corrosion Behavior of 316L Stainless Steel Produced by Selective Laser Melting

by
Antonio Collazo
,
Raúl Figueroa
*,
Carmen Pérez
and
Xosé Ramón Nóvoa
CINTECX, ENCOMAT Group, Campus Universitario As Lagoas, Universidade de Vigo, Marcosende, 36310 Vigo, Spain
*
Author to whom correspondence should be addressed.
Materials 2022, 15(4), 1353; https://doi.org/10.3390/ma15041353
Submission received: 31 December 2021 / Revised: 4 February 2022 / Accepted: 10 February 2022 / Published: 12 February 2022
(This article belongs to the Special Issue Corrosion in Additive Manufacturing)
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Abstract

In this work, the corrosion properties of 316L stainless steel (SS) obtained by selective laser melting (SLM) are analyzed. The electrochemical results of samples manufactured with an energy density between 40 and 140 J/mm3 are compared using different hatch distances and laser speeds. The analysis correlates the impact of the microstructure and processing defects of SLM 316L stainless steel on its behavior against corrosion. The optimal manufacturing conditions were selected considering the electrochemical results. Although the samples obtained with an energy density close to 90 J/mm3 show a high resistance to corrosion, their performance depends on the combination of selected parameters, obtaining the best results for an intermediate laser speed and a low hatch distance. These manufacturing conditions produce a higher breakdown potential, a faster repassivation of the steel and reduce the current density on electrochemical test.
Keywords: SLM; 316L; corrosion; impedance SLM; 316L; corrosion; impedance

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MDPI and ACS Style

Collazo, A.; Figueroa, R.; Pérez, C.; Nóvoa, X.R. Effect of Laser Speed and Hatch Spacing on the Corrosion Behavior of 316L Stainless Steel Produced by Selective Laser Melting. Materials 2022, 15, 1353. https://doi.org/10.3390/ma15041353

AMA Style

Collazo A, Figueroa R, Pérez C, Nóvoa XR. Effect of Laser Speed and Hatch Spacing on the Corrosion Behavior of 316L Stainless Steel Produced by Selective Laser Melting. Materials. 2022; 15(4):1353. https://doi.org/10.3390/ma15041353

Chicago/Turabian Style

Collazo, Antonio, Raúl Figueroa, Carmen Pérez, and Xosé Ramón Nóvoa. 2022. "Effect of Laser Speed and Hatch Spacing on the Corrosion Behavior of 316L Stainless Steel Produced by Selective Laser Melting" Materials 15, no. 4: 1353. https://doi.org/10.3390/ma15041353

APA Style

Collazo, A., Figueroa, R., Pérez, C., & Nóvoa, X. R. (2022). Effect of Laser Speed and Hatch Spacing on the Corrosion Behavior of 316L Stainless Steel Produced by Selective Laser Melting. Materials, 15(4), 1353. https://doi.org/10.3390/ma15041353

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