About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Solidification in External Fields
|
Presentation Title |
Solidification of Glass Forming Metallic Liquids Under Aerodynamic Levitation |
Author(s) |
Konstantinos Georgarakis, Martin E. Stiehler, Konstantinos Salonitis, Mark Roderic Jolly |
On-Site Speaker (Planned) |
Konstantinos Georgarakis |
Abstract Scope |
A glassy metal forms when a metallic liquid is cooled rapidly enough so that crystallization is avoided upon solidification. However, the acquisition of structural information in the supercooled liquid regime is most often hindered by crystallization. Advances in container-less solidification and synchrotron radiation offer new possibilities for observing in-situ the structural evolution during rapid solidification. Recent results indicate a rapid increase of the local order in the short and medium range (SRO and MRO) as the supercooled liquid approaches the glass transition temperature Tg, below which the structure is considered as “frozen”. The undercooled liquid enters into a different structural configuration below the melting temperature Tm, indicating the existence of three non-crystalline regimes in the liquid’s pathway to vitrification. The atomic structure evolution during vitrification may shed light on glass formation and the structural origins of the sluggish long-range order kinetics that suppress nucleation and growth of crystalline phases. |
Proceedings Inclusion? |
Planned: |