About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials Research in Reduced Gravity
|
Presentation Title |
Containerless Measurement of Thermophysical Properties of Ni-based Superalloys LEK94, MC2 and CMSX-10 in the Liquid Phase on Board the International Space Station |
Author(s) |
Markus Mohr, Rainer Wunderlich, Hans Fecht |
On-Site Speaker (Planned) |
Markus Mohr |
Abstract Scope |
Nickel-based superalloys combine mechanical properties beneficial for applications in high temperature environments, such as high strength, creep resistance and toughness. Therefore, typical applications are in turbines for land-based power generators as well as in aircraft engines. Nowadays casting developments are accompanied by simulations of the heat and material flow in the melt. Such models require precise input data of thermophysical properties in the solid and liquid phase.
The high solution reactivity of the melts makes measurement of surface tension, viscosity and specific heat of liquid metals a challenge. The method of choice is electromagnetic levitation, a containerless method. However, gravitational forces have to be absent to obtain a spherical droplet with controlled fluid flow conditions.
We will present and discuss measurements of thermophysical properties, performed in the Material Science Laboratory Electromagnetic Levitator (ISS-EML) on board the European Space Laboratory Columbus in the international space station (ISS). |
Proceedings Inclusion? |
Planned: Publication Outside of TMS |