| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure-Property Relationships of Bulk Metallic Glasses
|
| Presentation Title |
Glass Formation in Binary Alloys Studied Through Combinatorial Sputtering |
| Author(s) |
Salena Huang, Sebastian Kube, Nathan Johnson, Jinpeng Fan, Apurva Mehta, Jan Schroers |
| On-Site Speaker (Planned) |
Salena Huang |
| Abstract Scope |
Glass formation is a complex phenomenon including thermodynamic and kinetic aspects that are often controlled by extrinsic contributions. Bulk metallic glasses are typically fabricated through multicomponent alloys, but for study of glass formation, binary alloys are much simpler. We fabricated 57 binary alloy systems through combinatorial sputtering, with 66 alloys per system. Using established automated systems, these alloys were quickly categorized by structure and composition through x-ray diffraction and energy-dispersive x-ray spectroscopy respectively. 17% of the alloys form glasses under an estimated cooling rate of 10^8 K/s. We then studied correlations between glass formation and previously suggested indicators in literature. The size ratio of the constituents (r_i/r_j), the heat of mixing, the full-width-half-maximum of the first diffraction peak, and the amorphous composition range are insufficient to predict whether or not a binary alloy will form a glass under sputtering conditions, with the strongest indicator being the crystal structure mismatch. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Thin Films and Interfaces, |