About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
|
| Presentation Title |
Adjustments in Concentration of γ′ Formers and Refractory Elements in Haynes® 282® Alloy for Increased Performance in Creep and in Hydrogen Environment |
| Author(s) |
Martin Detrois, Yuan Tian, Chang-Yu Hung, Kyle Rozman, Stoichko Antonov, Paul Jablonski |
| On-Site Speaker (Planned) |
Martin Detrois |
| Abstract Scope |
The concentration of Ti and Al was increased in Haynes® 282® alloy while the concentration of refractory elements, Mo and W, was adjusted. This earlier study resulted in significant increases in the creep performance of the alloy while improving phase stability. Further adjustments were made to reach a compromise between higher strength and phase stability. The new alloy composition showed up to 287% increase in creep life for testing at high temperatures without compromising ductility. The phase stability was found to be similar to the commercial alloy. The performance of the alloys in hydrogen was assessed using gaseous pre-charging in 100% H2 at 1500 psi followed by tension testing and using retort frames with flowing 2.9% H2 for creep testing. While reductions in ductility and times to failure were observed for all alloys, the creep life of the new composition in flowing H2 outperformed the commercial formulation in air. |
| Proceedings Inclusion? |
Planned: |