|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIX
||The Secondary Glass Phase in High Fragility PtCuP Bulk Metallic Glass
||Sydney L. Corona, Jong H. Na, Qi An, William A. Goddard, Konrad Samwer, William L. Johnson
|On-Site Speaker (Planned)
||Sydney L. Corona
Bulk Metallic Glasses (BMGs) – traditionally understood as a single-phase disordered glass – display a liquid-liquid (glass-glass) phase transition at the fragile limit in PtCuP glass. Thermodynamic studies on this system revealed a repeatable and well-defined latent heat at high Angell fragility, and the existence of this transition leads to a natural resolution to the Kauzmann Paradox.
This work investigates the mechanical properties of the two liquid/glass phases through Vicker’s hardness and shear modulus, as well as structural and compositional analysis via Scanning Electron Microscopy (SEM)-paired Energy Dispersive Spectroscopy (EDS) and dark-field Transmission Electron Microscopy (TEM).