Correlation of Spatter Behavior and Process Zone Formation in Powder Bed Fusion of Metals

Eschner E, Staudt T, Schmidt M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

CIRP Annals - Manufacturing Technology Elsevier

DOI: 10.1016/j.cirp.2020.04.092

Abstract

In powder bed fusion of metals by a laser beam (PBF-LB/M) spatters evolve due to evaporation phenomena within the interaction zone of the laser-beam and material. The evaporation is of high importance for the evolution of a melt depression in the process zone. We use high-speed stereoscopic imaging to measure the three-dimensional (3D) time-resolved spatter trajectories. The statistical spatter behavior is correlated with the transition from heat conduction mode into evaporation dominated mode in the interaction zone and its geometry. The results indicate a high potential to use statistical measures of the 3D spatter trajectories for quality assurance in PBF-LB/M.

Authors with CRIS profile

Tim Eschner Lehrstuhl für Photonische Technologien (LPT) Tobias Staudt Lehrstuhl für Photonische Technologien (LPT) Michael Schmidt Lehrstuhl für Photonische Technologien (LPT)

How to cite

APA:

Eschner, E., Staudt, T., & Schmidt, M. (2020). Correlation of Spatter Behavior and Process Zone Formation in Powder Bed Fusion of Metals. CIRP Annals - Manufacturing Technology. https://doi.org/10.1016/j.cirp.2020.04.092

MLA:

Eschner, Eric, Tobias Staudt, and Michael Schmidt. "Correlation of Spatter Behavior and Process Zone Formation in Powder Bed Fusion of Metals." CIRP Annals - Manufacturing Technology (2020).

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