| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Leveraging macroscale experiments to elucidate microscale insights into hydrogen concentration effects on plastic deformation in structural metals |
| Author(s) |
Mohammad Imroz Alam, Alfredo Zafra, Emilio Martinez-Paneda, Zachary D. Harris |
| On-Site Speaker (Planned) |
Zachary D. Harris |
| Abstract Scope |
An extensive literature of experimental and theoretical results establish that hydrogen can tangibly modify plastic deformation processes in metallic materials. However, critical review of this literature reveals that most studies in a given material have largely been conducted within a narrow range of hydrogen concentration, even in heavily studied systems like polycrystalline nickel. This limitation is magnified by the recent hydrogen community focus on highly localized measurements, which are complicated by the inherent variability of engineering materials. This study reports recent efforts to leverage macroscale behaviors that have strong microscale sensitivities, such as deformation texture evolution and work hardening, to mechanistically understand the role of hydrogen concentration on plastic deformation processes in pure nickel. Results suggest that prior conclusions on how hydrogen modifies plastic deformation behavior in pure nickel are likely restricted in their validity to low hydrogen concentrations, with other damage processes dominating behavior at high hydrogen concentrations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Mechanical Properties, Copper / Nickel / Cobalt |