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Modification of Structural Properties Using Process Parameters and Surface Treatment of Monolithic and Thin-Walled Parts Obtained by Selective Laser Melting

Institute of Robots & Machine Design, Faculty of Mechanical Engineering, Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland
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Materials 2020, 13(24), 5662; https://doi.org/10.3390/ma13245662
Received: 17 November 2020 / Revised: 7 December 2020 / Accepted: 9 December 2020 / Published: 11 December 2020
Additive manufacturing is one of the most popular technological processes and is being considered in many research works, a lot of which are related to thin-walled parts analysis. There are many cases where different part geometries were manufactured using the same process parameters. That kind of approach often causes different porosity and surface roughness values in the geometry of each produced part. In this work, the porosity of thin-walled and monolithic parts was compared. To analyze additively manufactured samples, porosity and microstructural analyses were done. Additionally, to check the influence of process parameter modification on the manufactured parts’ properties, hardness and roughness measurements were made. Surface roughness and the influence of surface treatment were also taken into account. Porosity reduction of thin-walled parts with energy density growth was observed. Additionally, a positive influence of slight energy density growth on the surface roughness of produced parts was registered. Comparing two extreme-parameter groups, it was observed that a 56% energy density increase caused an almost 85% decrease in porosity and a 45% increase in surface roughness. Additional surface treatment of the material allowed for a 70–90% roughness reduction. View Full-Text
Keywords: additive manufacturing; selective laser melting; microstructural investigation; porosity; surface treatment; 316L stainless steel additive manufacturing; selective laser melting; microstructural investigation; porosity; surface treatment; 316L stainless steel
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MDPI and ACS Style

Grzelak, K.; Kluczyński, J.; Szachogłuchowicz, I.; Łuszczek, J.; Śnieżek, L.; Torzewski, J. Modification of Structural Properties Using Process Parameters and Surface Treatment of Monolithic and Thin-Walled Parts Obtained by Selective Laser Melting. Materials 2020, 13, 5662. https://doi.org/10.3390/ma13245662

AMA Style

Grzelak K, Kluczyński J, Szachogłuchowicz I, Łuszczek J, Śnieżek L, Torzewski J. Modification of Structural Properties Using Process Parameters and Surface Treatment of Monolithic and Thin-Walled Parts Obtained by Selective Laser Melting. Materials. 2020; 13(24):5662. https://doi.org/10.3390/ma13245662

Chicago/Turabian Style

Grzelak, Krzysztof, Janusz Kluczyński, Ireneusz Szachogłuchowicz, Jakub Łuszczek, Lucjan Śnieżek, and Janusz Torzewski. 2020. "Modification of Structural Properties Using Process Parameters and Surface Treatment of Monolithic and Thin-Walled Parts Obtained by Selective Laser Melting" Materials 13, no. 24: 5662. https://doi.org/10.3390/ma13245662

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