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Influence of initial powder layer thickness and focus deviation on the properties of hybrid manufactured parts by Laser Powder Bed Fusion

Lubkowitz, Victor 1; Fischmann, Patrick 1; Schulze, Volker 1; Zanger, Frederik ORCID iD icon 1
1 Institut für Produktionstechnik (WBK), Karlsruher Institut für Technologie (KIT)

Abstract:

In hybrid-additive manufacturing using powder bed fusion with laser beam (PBF-LB) conventionally manufactured base-bodies are overprinted with an individual geometry. In this paper, the influence of deviations of the initial layer thickness, and the focal plane on the component properties are investigated. For separate consideration of the individual effects, purely additive (AlSi10Mg) and hybrid-additive (AlSi10Mg on EN AW6082) test specimens were manufactured. The layer thickness was varied from 0 to 200 µm, and the focal plane between 0 and -8 mm. The influence on the microstructure due to the altered induced energy input is analyzed. These findings are correlated with respect to the tensile strength and material hardness. The highest strength is achieved with an initial layer thickness of 50 µm. A hardness decrease of 8 % due to hot stress cracks in the interface is avoided by targeted shifting of the focal plane.


Verlagsausgabe §
DOI: 10.5445/IR/1000152833
Veröffentlicht am 13.12.2022
Originalveröffentlichung
DOI: 10.1016/j.procir.2022.08.136
Scopus
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Produktionstechnik (WBK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2212-8271
KITopen-ID: 1000152833
Erschienen in 12TH CIRP CONFERENCE ON PHOTONIC TECHNOLOGIES (LANE 2022)
Verlag Elsevier
Band 111
Seiten 87–91
Bemerkung zur Veröffentlichung 12th CIRP Conference on Photonic Technologies [LANE 2022], 4-8 September 2022, Fürth, Germany
Vorab online veröffentlicht am 06.09.2022
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