Process-dependent material characteristicsof dmls-manufactured specimens

Process-dependent material characteristicsof dmls-manufactured specimens


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Abstract. Direct metal laser sintering is a 3D-printing technology involving a multitude of physical phenomena requiring the fine-tuning of multiple parameters (e.g., laser power, layer thickness) to achieve satisfying fabrication results [1]. Modifying each of these parameters can significantly influence the resulting material characteristics of the fabricated parts [2]. This work investigates the impact of the modification of the process parameters on the material characteristics of hardened aluminum specimens. A design of experiments was used to fabricate 85 aluminum specimens using 17 printing parameter sets. The specimens’ dimensional accuracy, surface roughness, hardness, density, porosity, and thermal conductivity were investigated. Standardized, as well as self-designed test setups were used for this purpose. Furthermore, porosity measurements and microstructural investigations were performed using scanning electron microscopy and reflected light microscopy.

Direct Metal Laser Sintering, Strengthal, Thermal Conductivity, Microstructure

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: ZETTEL Dominic, BREITKOPF Piotr, NICOLAY Pascal, WILLMANN Roland, Process-dependent material characteristicsof dmls-manufactured specimens, Materials Research Proceedings, Vol. 28, pp 65-74, 2023


The article was published as article 8 of the book Material Forming

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