About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Development of Martensitic Steels With Oxidation Resistance for Extreme Environments |
| Author(s) |
Dean Pierce, Govindarajan Muralidharan, Allen Haynes, Kinga Unocic, Rishi Pillai |
| On-Site Speaker (Planned) |
Dean Pierce |
| Abstract Scope |
Here we present on the development of martensitic stainless steel alloys which exhibit significant improvements in the combination of elevated temperature strength, oxidation resistance, and thermal conductivity relative to existing commercial martensitic stainless, overcoming the traditional metallurgical tradeoffs between oxidation resistance, thermal conductivity, and strength. The new alloys were originally developed for pistons of heavy duty engines to allow for significantly more severe and efficient combustion conditions, but are also candidates for heat exchangers, power plant piping, steels for dies, hydrogen combustion systems, etc. The oxidation resistance of the new alloys is particularly exceptional, with the alloys able to maintain a thin protective oxide scale under harsh cyclical oxidation testing at 700C in air+10% H2O and air +30% H2O for long durations, under which the commercial 12Cr steels exhibit premature oxide scale breakdown and much faster oxidation kinetics. We discuss the microstructure and novel oxidation mechanism of the new alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Environmental Effects, High-Temperature Materials |