About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Designing Cryogenic High-Mn Steels: Mechanistic Considerations and Sustainable Processing |
| Author(s) |
Shaolou Wei, Shao-Lun Lu, Dirk Ponge, Dierk Raabe |
| On-Site Speaker (Planned) |
Shaolou Wei |
| Abstract Scope |
Developing steels with promising load-bearing performance at cryogenic temperatures is of great importance in response to the growing demand for cost-effective structural alloys capable of operating in extreme conditions, such as liquified gas storage and transportation. Although Fe-9Ni martensitic steels have attracted extensive interest in this context, the high Ni content, the complexity of thermomechanical processing routes, and the requirement of ultra-pure smelting techniques challenge their applications as eco-friendly cryogenic structural materials. In this talk, we will present the proof-of-principle design of cryogenic high-Mn steels, focusing on: (i) the central alloy design considerations; (ii) the critical plasticity micro-mechanisms responsible for strain hardening; and (iii) the feasibility of a carbon-lean processing route exploiting ferromanganese master alloys produced from hydrogen-based direct reduction. Additional insights into plausible micro-alloying strategies will also be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Phase Transformations, Sustainability |