About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
Equiaxed Solidification of Magnesium Alloy Observed by In-situ X-Ray Radiography in Microgravity |
| Author(s) |
Geetanjali Srivastava, Fan Wu, Yangchao Deng, Chuyuan Xu, Hajo Dieringa, Jonas Isakovic, Wajira Mirihanage, Mert Celikin, Wim Sillekens, David J. Browne |
| On-Site Speaker (Planned) |
Geetanjali Srivastava |
| Abstract Scope |
Magnesium alloys are lightweight structural materials whose solidification behaviour is strongly influenced by gravity-driven melt convection and solid-phase buoyancy. To isolate these effects, time-resolved in-situ X-ray observation of solidification experiments was performed on a magnesium-zinc (Mg–17wt.%Zn) alloy under both terrestrial and microgravity conditions using the XRMON-SOL spatially isothermal furnace. The microgravity experiment was conducted abroad the SSC Space’s Suborbital Express 5 sounding rocket launched in May 2026. Ground-based experiments were first conducted to establish thermal profiles compatible with the six-minute microgravity window and to optimise X-ray imaging conditions. Crystal nucleation, dendritic growth, impingement and solidification dynamics were recorded throughout the microgravity phase and compared with corresponding ground-reference experiments. The results highlight the influence of gravity on magnesium alloy solidification behaviour and microstructure evolution, providing new insights into equiaxed solidification and crystal growth in metallic systems with hexagonally close-packed crystal structure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Other, Other |