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Open AccessArticle

The Effect of Position of Materials on a Build Platform on the Hardness, Roughness, and Corrosion Resistance of Ti6Al4V Produced by DMLS Technology

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Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
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Department of Applied Mathematics and Informatics, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
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Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
*
Author to whom correspondence should be addressed.
Metals 2019, 9(10), 1055; https://doi.org/10.3390/met9101055
Received: 5 September 2019 / Revised: 24 September 2019 / Accepted: 27 September 2019 / Published: 28 September 2019
This article is focused on the effect of position on a build platform on the hardness, roughness and corrosion rate of parts (Ti6Al4V) produced by direct metal laser sintering (DMLS) technology. During the sintering process, the test samples were located at key positions—at the corners and in the middle of the build platform. An experimental program started with a microstructure investigation in two perpendicular directions in individual positions. The selected mechanical property—hardness—was investigated on metallographic cuts in both directions and all positions, and data sets underwent a statistical analysis (analysis of variance (ANOVA), t-test, F-test). The same procedure was repeated for an assessment of position effect to surface roughness (Kruskal–Wallis test) and material corrosion resistance. On the build platform, the course of hardness, roughness, and corrosion rate values that can be expected in individual positions was mapped in detail. View Full-Text
Keywords: Ti6Al4V; DMLS; build platform; orientation; hardness; roughness; corrosion rate; statistics Ti6Al4V; DMLS; build platform; orientation; hardness; roughness; corrosion rate; statistics
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Guzanová, A.; Draganovská, D.; Ižaríková, G.; Živčák, J.; Hudák, R.; Brezinová, J.; Moro, R. The Effect of Position of Materials on a Build Platform on the Hardness, Roughness, and Corrosion Resistance of Ti6Al4V Produced by DMLS Technology. Metals 2019, 9, 1055.

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