About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
|
| Presentation Title |
Effects of Titanium Nitride Layer on High-Temperature Oxidation of Titanium Alloys |
| Author(s) |
Kevin Gautier, Enrica Epifano, Thomas Gheno, Damien Connétable, Daniel Monceau |
| On-Site Speaker (Planned) |
Kevin Gautier |
| Abstract Scope |
Highly valued in aerospace for their excellent specific strength, titanium alloys can be used to replace steel and nickel-based superalloys in aircraft engines. However, titanium alloys are limited to temperatures below 600 °C due to insufficient creep, oxidation resistance and oxygen embrittlement. Several studies highlighted a decrease in high temperature oxidation rate when nitrogen is present in the atmosphere , mainly linked to the presence of a nitride layer below the oxide scale. It was shown that adding tungsten in the alloy promotes the formation of continuous Ti2N layer below the oxide scale. To understand the influence of this continuous nitride layer, a comprehensive investigation of oxidation kinetics in air and oxygen of Ti-xW alloys was undertaken, complemented by EBSD, TEM analyses and ab-initio calculations. A new model for the growth of oxide and nitride layers is proposed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, High-Temperature Materials, |