About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
Presentation Title |
Some Effects of Hydrogen on the CoCrFeMnNi Alloy |
Author(s) |
Dierk R. Raabe |
On-Site Speaker (Planned) |
Dierk R. Raabe |
Abstract Scope |
Some high-entropy alloys have shown good damage tolerance. Here we report that this essential property can be maintained even when exposing the CoCrFeMnNi alloy to the most detrimental environmental condition known to metals, hydrogen. This is enabled by a self-accommodation mechanism: the higher the local hydrogen content, the higher the twin formation rate, as hydrogen seems to reduce the stacking fault energy. Thus, the hydrogen’s through thickness diffusion gradient translates into a nano-twin gradient that counteracts material weakening by enhanced local strengthening. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Environmental Effects, Mechanical Properties |