| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure and Dynamics of Metallic Glasses
|
| Presentation Title |
Nucleation behavior of primary FCC-Al in a Al86Ni10MM4 metallic glass |
| Author(s) |
Wan Kim, John H. Perepezko, Tianrui Duan, Eun-Soo Park |
| On-Site Speaker (Planned) |
Wan Kim |
| Abstract Scope |
The investigation of nucleation kinetics of primary FCC-Al in Al-based metallic glasses over wide temperature ranges has been a persistent challenge to clarify the kinetic competition between glass formation and crystallization. To overcome this limitation, a basis for the Time-Temperature-Transition (TTT) diagram of primary FCC-Al in Al86Ni10MM4 (MM: mischmetal) MG has been developed from thermodynamic analysis and nucleation delay time measurements at the high (near melting temperature) and low (near glass transition temperature) temperature region by Flash DSC (FDSC). Coupled with a statistical analysis on nucleation events during repeat runs observed at the cooling rate of 40,000K/s, experimental delay time data obtained by FDSC provided the valuable constraints on the assignment of kinetics parameters for the construction of the TTT diagram. A heterogeneous nucleation model analysis is developed to elucidate the relation between the interface energy and the nucleation catalyst. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Phase Transformations, Solidification |