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Electromagnetic levitation containerless processing of metallic materials in microgravity: thermophysical properties
- Publication Year :
- 2023
- Publisher :
- Universität des Saarlandes, 2023.
-
Abstract
- Transitions from the liquid to the solid state of matter are omnipresent. They form a crucial step in the industrial solidification of metallic alloy melts and are greatly influenced by the thermophysical properties of the melt. Knowledge of the thermophysical properties of liquid metallic alloys is necessary in order to gain a tight control over the solidification pathway, and over the obtained material structure of the solid. Measurements of thermophysical properties on ground are often difficult, or even impossible, since liquids are strongly influenced by earth’s gravity. Another problem is the reactivity of melts with container materials, especially at high temperature. Finally, deep undercooling, necessary to understand nucleus formation and equilibrium as well as non-equilibrium solidification, can only be achieved in a containerless environment. Containerless experiments in microgravity allow precise benchmark measurements of thermophysical properties. The electromagnetic levitator ISS-EML on the International Space Station (ISS) offers perfect conditions for such experiments. This way, data for process simulations is obtained, and a deeper understanding of nucleation, crystal growth, microstructural evolution, and other details of the transformation from liquid to solid can be gained. Here, we address the scientific questions in detail, show highlights of recent achievements, and give an outlook on future work.
- Subjects :
- Theory and computation
Physics and Astronomy (miscellaneous)
Fluid dynamics
Space and Planetary Science
Materials Science (miscellaneous)
Medicine (miscellaneous)
Agricultural and Biological Sciences (miscellaneous)
Biochemistry, Genetics and Molecular Biology (miscellaneous)
Structural materials
Electromagnetic levitation Microgravity Liquid metallic materials Thermophysical properties
Materials for energy and catalysis
Techniques and instrumentation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....1ed1c7749fb6f5c95d0b070a048f647b
- Full Text :
- https://doi.org/10.22028/d291-40112