About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
Surface oxidation governs crystallization kinetics in Mg-Cu-Gd BMGs |
| Author(s) |
Min Kyung Kwak, Robin E. Schäublin, Chae Woo Ryu, Jörg F. Löffler, Eun Soo Park |
| On-Site Speaker (Planned) |
Min Kyung Kwak |
| Abstract Scope |
Oxidation accelerates crystallization in amorphous metals and thus increases the critical cooling rate (Rc) required for bulk metallic glass (BMG) formation and degrades mechanical properties. While oxidation-resistant processing and alloying strategies have been developed, the quantitative relationship between oxidation and crystallization remains unexplored. This study addresses this gap by systematically investigating how oxidation influences crystallization kinetics in Mg-Cu-Gd BMG.
Here, the effect of oxidation on crystallization kinetics was systematically examined using fast differential scanning calorimetry (FDSC) to construct the time-temperature-transformation (TTT) diagrams and quantify Rc as a function of oxidation level. Complementary TEM analysis revealed the microstructural mechanisms governing this relationship.
This study provides a quantitative basis for optimizing alloy design and processing by incorporating the effects of surface and bulk oxidation, thereby enabling the fabrication of larger and more complex BMG components with optimal amorphous structure and mechanical performance for advanced applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Phase Transformations, Other |