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Process Window for Highly Efficient Laser-Based Powder Bed Fusion of AlSi10Mg with Reduced Pore Formation
Article

PBF-LB Process-Induced Regular Cavities for Lightweight AlSi10Mg Structures

wbk Institute of Production Science, Karlsruhe Institute of Technology (KIT), Kaiserstraße 12, 76131 Karlsruhe, Germany
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Author to whom correspondence should be addressed.
Academic Editor: Amir Mostafaei
Materials 2021, 14(21), 6665; https://doi.org/10.3390/ma14216665
Received: 16 September 2021 / Revised: 27 October 2021 / Accepted: 30 October 2021 / Published: 5 November 2021
(This article belongs to the Special Issue Research and Development of Additive Manufacturing Technology)
In powder bed fusion with laser beam (PBF-LB), two process-induced defects by pore formation are known: local spherical pores by the keyhole effect and geometrically undefined pores caused by lack of fusion. Both pore types are heterogeneously distributed and can be used for lightweight or damping design applications. The achievable porosity is limited to around 13%. This article presents a novel process-controlled method enabling the targeted and reproducible manufacturing of solid parts with regularly distributed cavities, currently up to 60% porosity in AlSi10Mg, using the balling effect. This eliminates the need for time-consuming digital pre-processing work. View Full-Text
Keywords: selective laser melting (SLM); process control; aluminum selective laser melting (SLM); process control; aluminum
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MDPI and ACS Style

Lubkowitz, V.; Alber, J.; Zanger, F. PBF-LB Process-Induced Regular Cavities for Lightweight AlSi10Mg Structures. Materials 2021, 14, 6665. https://doi.org/10.3390/ma14216665

AMA Style

Lubkowitz V, Alber J, Zanger F. PBF-LB Process-Induced Regular Cavities for Lightweight AlSi10Mg Structures. Materials. 2021; 14(21):6665. https://doi.org/10.3390/ma14216665

Chicago/Turabian Style

Lubkowitz, Victor, Jonas Alber, and Frederik Zanger. 2021. "PBF-LB Process-Induced Regular Cavities for Lightweight AlSi10Mg Structures" Materials 14, no. 21: 6665. https://doi.org/10.3390/ma14216665

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