About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Unveiling hidden mechanisms on High Entropy Alloys to counteract hydrogen embrittlement |
| Author(s) |
Marcelo L. Paredes |
| On-Site Speaker (Planned) |
Marcelo L. Paredes |
| Abstract Scope |
The advent of high-entropy alloys (HEAs) as an alternative to conventional metallic alloys has opened a vast configurational space for exploration to find the strongest, toughest, and most environmentally resistant alloys for diverse engineering applications. In this talk, a new non-equiatomic AlFeNiCuCr and its mechanical properties against hydrogen diffusion will be presented. Three annealed configurations of the above HEA with different microstructures and grain refinement are prepared and hydrogen pre-charged via a high-temperature gaseous chamber to bring the samples to a uniform elevated hydrogen concentration. Preliminary uniaxial tensile tests indicate the suitability of this alloy for hydrogen application, as ductility and strength are negligibly affected by the presence of hydrogen. Through ongoing advanced microstructure techniques, local critical material points are probed to determine the occurrence of hydrogen-strengthening mechanisms that bring benefits to the phase stability of the studied HEA. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Environmental Effects, Mechanical Properties |