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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title X-ray and neutron radiographic experiments on particle-laden molten metal flows
Author(s) Tobias Lappan, Mārtiņš Sarma, Sascha Heitkam, David Mannes, Pavel Trtik, Natalia Shevchenko, Kerstin Eckert, Sven Eckert
On-Site Speaker (Planned) Tobias Lappan
Abstract Scope In metallurgical processing, non-metallic inclusions in metallic materials are one highly relevant challenge. Bubble injection into molten metals boosts the inclusion control and removal, thus enhancing metal homogenisation and purification. Although this principle of bubble flotation has been used for a long time, the effects of bubble-inclusion interactions in molten metals are not yet well researched. Imaging measurements of multiphase metal flows are challenging for two main reasons: the metals’ high melting temperatures, and their opaqueness for visible light. This work focuses on X-ray and neutron radiographic experiments employing low-melting gallium alloys laden with small model particles. Both, bubbles and particles, are visualised simultaneously with high spatial and temporal resolution to analyse their motions by tracking algorithms. We demonstrate the capability of time-resolved X-ray and neutron radiography to image flows in particle-laden optically opaque fluids, thus contributing to pave the way for systematic investigations of particle and bubble flows in molten metals.
Proceedings Inclusion? Planned:
Keywords Other, Other, Other


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