| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Hydrogen Solution in a TiNbZr Medium-Entropy Alloy |
| Author(s) |
Chengguang Wu, Yilun Gong, Yan Ma, Dierk Raabe |
| On-Site Speaker (Planned) |
Chengguang Wu |
| Abstract Scope |
Refractory medium/high-entropy alloys (M/HEAs) are emerging as promising alternative materials for hydrogen storage and hydrogen combustion engines, which are promising to be applied to the development of the hydrogen economy. A better understanding of hydrogen-metal interactions is necessary to advance the development of this material class, thus helping to leverage hydrogen-based applications. Here we reveal in a time-resolved manner the microstructural evolution of a TiNbZr MEA by in-situ synchrotron high-energy X-ray diffraction (HEXRD) during hydrogenation in pure H2 gas at atmospheric pressure. The thermodynamics of hydrogen accommodation associated with experimental observations in the crystal lattice is elucidated using simulations based on density functional theory (DFT). By combining in-situ HEXRD experiments and DFT calculations, the study provides fundamental insights into the relationship between lattice structure and hydrogen occupancy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, |