A high-speed x-ray radiography setup for in-situ electron beam powder bed fusion at PETRA III

Pidassa M. Bidola; Guilherme Abreu-Faria; Johannes Klingenberg; Jens Brehling; Hilmar Burmester; Ursula Tietze; Christina Krywka; Peter Staron; Bernd Schwebke; Lars Lottermoser; Greta Lindwall; Chrysoula Ioannidou; Hans-Henrik König; Gabriel Spartacus; Nick Semjatov; Felix Beckmann

doi:10.1117/12.2678913

3 October 2023 A high-speed x-ray radiography setup for in-situ electron beam powder bed fusion at PETRA III

Pidassa M. Bidola, Guilherme Abreu-Faria, Johannes Klingenberg, Jens Brehling, Hilmar Burmester, Ursula Tietze, Christina Krywka, Peter Staron, Bernd Schwebke, Lars Lottermoser, Greta Lindwall, Chrysoula Ioannidou, Hans-Henrik König, Gabriel Spartacus, Nick Semjatov, Felix Beckmann

Author Affiliations +

Proceedings Volume 12694, Advances in X-Ray/EUV Optics and Components XVIII; 1269402 (2023) https://doi.org/10.1117/12.2678913
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

A high-energy white synchrotron x-ray beam enables penetration of relatively thick and highly absorbing samples. At the P61A White Beam Engineering Materials Science Beamline, operated by Helmholtz-Zentrum Hereon at the PETRA III ring of the Deutsches Elektronen-Synchrotron (DESY), a tailored x-ray radiography system has been developed to perform in-situ x-ray imaging experiments at high temporal resolution, taking advantage of the unprecedented x-ray beam flux delivered by ten successive damping wigglers. The imaging system is equipped with an ultrahigh-speed camera (Phantom v2640) enabling acquisition rates up to 25 kHz at maximal resolution and binned mode. The camera is coupled with optical magnification (5x, 10x) and focusing lenses to enable imaging with a pixel size of 1,35 micrometre. The scintillator screens are housed in a special nitrogen gas cooling environment to withstand the heat load induced by the beam, allowing spatial resolution to be optimized down to few micrometres. We present the current state of the system development, implementation and first results of in situ investigations, especially of the electron beam powder bed fusion (PBF-EB) process, where the details of the mechanism of crack and pore formation during processing of different powder materials, e.g. steels and Ni-based alloys, is not yet known.

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Pidassa M. Bidola, Guilherme Abreu-Faria, Johannes Klingenberg, Jens Brehling, Hilmar Burmester, Ursula Tietze, Christina Krywka, Peter Staron, Bernd Schwebke, Lars Lottermoser, Greta Lindwall, Chrysoula Ioannidou, Hans-Henrik König, Gabriel Spartacus, Nick Semjatov, and Felix Beckmann "A high-speed x-ray radiography setup for in-situ electron beam powder bed fusion at PETRA III", Proc. SPIE 12694, Advances in X-Ray/EUV Optics and Components XVIII, 1269402 (3 October 2023); https://doi.org/10.1117/12.2678913

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