About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
Crystallization Kinetics During Continuous Heating: Moving Beyond Kissinger's Method |
| Author(s) |
Owain Houghton |
| On-Site Speaker (Planned) |
Owain Houghton |
| Abstract Scope |
The crystallization kinetics of glass-forming liquids is often described using the Johnson-Mehl-Avrami-Kolmogorov (JMAK) rate equation. For continuous-heating studies, the same analysis has only been applied numerically. Here, a JMAK rate equation for the crystallization of glass-forming liquids during continuous heating is derived. Various kinetic behaviors are considered, and the analysis is validated by comparison to experimental data and numerical simulations for the crystallization of glassy Fe80B20 (at.%). The application of Kissinger’s method to analyze crystallization kinetics is subsequently justified for well-defined conditions. However, it is shown that the non-Arrhenius temperature dependence of crystal growth rates in glass-forming liquids can be more precisely determined by using the present model to fit the peak position, shape, and height for a series of crystallization exotherms. The implications of these analytical expressions for the design and development of glass-forming systems for a broad range of applications are considered. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Phase Transformations, Other |