MiniMelt: An instrument for real-time tracking of electron beam additive manufacturing using synchrotron x-ray techniques

König HH, Semjatov N, Spartacus G, Bidola P, Ioannidou C, Ye J, Renner J, Lienert U, Abreu-Faria G, Wahlmann B, Wildheim M, Ackelid U, Beckmann F, Staron P, Hedström P, Körner C, Lindwall G (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Review of Scientific Instruments AIP Publishing

Book Volume: 94

Issue: 12

Journal Issue: 12

DOI: 10.1063/5.0177255

Abstract

The development of a sample environment for in situ x-ray characterization during metal Electron Beam Powder Bed Fusion (PBF-EB), called MiniMelt, is presented. The design considerations, the features of the equipment, and its implementation at the synchrotron facility PETRA III at Deutsches Elektronen-Synchrotron, Hamburg, Germany, are described. The equipment is based on the commercially available Freemelt ONE PBF-EB system but has been customized with a unique process chamber to enable real-time synchrotron measurements during the additive manufacturing process. Furthermore, a new unconfined powder bed design to replicate the conditions of the full-scale PBF-EB process is introduced. The first radiography (15 kHz) and diffraction (1 kHz) measurements of PBF-EB with a hot-work tool steel and a Ni-base superalloy, as well as bulk metal melting with the CMSX-4 alloy, using the sample environment are presented. MiniMelt enables time-resolved investigations of the dynamic phenomena taking place during multi-layer PBF-EB, facilitating process understanding and development of advanced process strategies and materials for PBF-EB.

Authors with CRIS profile

Nick Semjatov Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Jihui Ye Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Jakob Renner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Benjamin Wahlmann Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE) Freemelt AB SE Sweden (SE) Helmholtz-Zentrum Hereon DE Germany (DE) Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH (HZG) DE Germany (DE) Deutsches Elektronen-Synchrotron DESY DE Germany (DE)

How to cite

APA:

König, H.H., Semjatov, N., Spartacus, G., Bidola, P., Ioannidou, C., Ye, J.,... Lindwall, G. (2023). MiniMelt: An instrument for real-time tracking of electron beam additive manufacturing using synchrotron x-ray techniques. Review of Scientific Instruments, 94(12). https://dx.doi.org/10.1063/5.0177255

MLA:

König, Hans Henrik, et al. "MiniMelt: An instrument for real-time tracking of electron beam additive manufacturing using synchrotron x-ray techniques." Review of Scientific Instruments 94.12 (2023).

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