About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Chemical and Microstructural Strategies for Protecting Advanced High Strengths Steels Against Hydrogen Embrittlement |
| Author(s) |
Dierk R. Raabe |
| On-Site Speaker (Planned) |
Dierk R. Raabe |
| Abstract Scope |
Advanced high strengths sheet steels can include ferritic, austenitic and martensitic microstructure features. The high mechanical and microstructural contrast inherent in such alloys makes them vulnerable against hydrogen embrittlement, including mechanisms such as decohesion, enhanced local dislocation activity, shear localization, and superabundant vacancies.
The talk presents and evaluates several strategies to protect such steels against these mechanisms and the associated damage initiation. Protective measures include the exploitation of different high temperature partitioning ranges, leading to different types of metastable austenite, characterized by different barriers for mechanical transformation, and the passivation of interfaces by targeted chemical grain boundary segregation engineering. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Phase Transformations |