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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title D-49: Ground-based Experiments Using an Electrostatic Levitator and Numerical Modeling of Convection Inside Electromagnetically-levitated Molten Iron-cobalt Droplets in Support of Space Experiments
Author(s) Jonghyun Lee, Michael SanSoucie
On-Site Speaker (Planned) Jonghyun Lee
Abstract Scope Materials research is being conducted using an electromagnetic levitator installed in the International Space Station. Various metallic alloys are being tested to elucidate unknown links among the structures, processes, and properties. To accomplish the mission of these space experiments, several ground-based activities have been carried out. This poster presents some of our ground-based supporting experiments and numerical modeling efforts. Mass evaporation of Fe50Co50, one of flight compositions, was predicted numerically and validated by the tests using an electrostatic levitator (ESL). The density of various compositions within the Fe-Co system was measured with ESL. These results are being served as reference data for the space experiments. The convection inside an electromagnetically-levitated droplet was also modeled to predict the flow status, shear rate, and convection velocity under various process parameters, which is essential information for designing and analyzing the space experiments of some flight compositions influenced by convection.
Proceedings Inclusion? Planned: None Selected


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