| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Environmental degradation of Ni-based superalloys in hydrogen-based combustion systems |
| Author(s) |
Dominik Dziedzic, Philipp Schulz, Ramanarayanan Balachandran, Midhat Talibi, Enrique Galindo-Nava |
| On-Site Speaker (Planned) |
Enrique Galindo-Nava |
| Abstract Scope |
Hydrogen-powered combustion is a highly viable option to decarbonise key sectors including maritime, aviation, and power generation. It is therefore critical to understand whether hydrogen-induced degradation, like hydrogen embrittlement, could occur in high-temperature alloys used in combustion systems. This talk provides critical insights into the deleterious effects of hydrogen combustion on nickel-base superalloys and how the surface condition plays a crucial role in accelerating H flux into materials. A systematic study of superalloys exposed to different H2 flame conditions is conducted to establish links between combustion time and alloy’s hydrogen uptake. A strong relationship is observed between material’s initial surface state and hydrogen content, where the evolving oxide likely controls the hydrogen absorption rate. Mechanical testing is done to characterise material’s deformation behaviour and results are compared against literature in H embrittlement. The study shows that understanding surface effects is critical for mitigating hydrogen-induced environmental degradation in future combustion technologies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Other |