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

Anna Guzanová; Dagmar Draganovská; Gabriela Ižaríková; Jozef Živčák; Radovan Hudák; Janette Brezinová; Róbert Moro

doi:10.3390/met9101055

Metals (Sep 2019)

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

Anna Guzanová,
Dagmar Draganovská,
Gabriela Ižaríková,
Jozef Živčák,
Radovan Hudák,
Janette Brezinová,
Róbert Moro

Affiliations

Anna Guzanová: Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Dagmar Draganovská: Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Gabriela Ižaríková: Department of Applied Mathematics and Informatics, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Jozef Živčák: Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Radovan Hudák: Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Janette Brezinová: Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia
Róbert Moro: Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Košice 040 01, Slovakia

DOI: https://doi.org/10.3390/met9101055
Journal volume & issue: Vol. 9, no. 10
p. 1055

Abstract

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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.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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