About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Understanding Damage Processes in Steels Amplified by Environmental Effects |
| Author(s) |
Ju Li |
| On-Site Speaker (Planned) |
Ju Li |
| Abstract Scope |
We look deeper into some atomistic mechanisms of hydrogen and helium embrittlements of steels [Int. J. Plasticity 74 (2015) 175; Nature Materials 22 (2023) 710]. In the nuclear fusion reactor context, cross interactions between helium, tritium, vacancy and dislocation need to be modelled in order to understand damage accumulation. Both electrochemical pumping and secondary phase absorption are utilized to mitigate damage, which have been to shown to solve the gassing problems to some degree, illustrating the distinction between healable and unhealable degradations. [ Applied Materials Today 29 (2022) 101627; Advanced Science (2022) 2203555; Acta Materialia 266 (2024) 119654 ] New atomistic simulations provide linkage between dislocation plasticity, gas-stabilized vacancy clusters, and cracking. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Computational Materials Science & Engineering, |