| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
|
| Presentation Title |
Characterising the Effect of Environment and Salt Concentration on the Fatigue Life of a Nickel Disc Alloy |
| Author(s) |
Mark C. Hardy, Yong Li, Simon Gray, Catherine Jackson, Mary Taylor, Ben Grant |
| On-Site Speaker (Planned) |
Mark C. Hardy |
| Abstract Scope |
As safety-critical nickel disc rotors in aircraft engines are required to operate for longer at temperatures above 700°C, there is greater likelihood of surface degradation and micro-cracks from environmental damage, i.e., oxidation and hot corrosion. The latter being a consequence of interactions with deposits on the surface of components from the ingest of salt and sands when aircraft fly over seas and deserts, for example. To ensure that integrity is maintained at disc rim features from fatigue cycles with sustained loads at peak temperature and out of phase thermo-mechanical fatigue cycles, a comprehensive understanding of mechanisms of surface degradation and fatigue crack nucleation is needed. The results of experimental work to characterise the effect of environment and salt concentration on the fatigue life of a powder metallurgy nickel disc alloy are discussed at temperatures between 650 and 750°C. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Environmental Effects, High-Temperature Materials |