| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-128: Thermo-Mechanical Fatigue Damage in a Single Crystal Nickel Superalloy |
| Author(s) |
Alberto Gonzalez Garcia, Jonathan Jones, Mark Whittaker, Julian Mason-Flucke |
| On-Site Speaker (Planned) |
Alberto Gonzalez Garcia |
| Abstract Scope |
Thermo-mechanical fatigue is a complex damage mechanism which arises from simultaneous cyclic changes in mechanical stress and temperature, and involves creep, fatigue, and oxidation effects. The push for higher turbine entry temperatures in the pursuit for higher efficiency has made it increasingly relevant in hot section components of jet engines, where it is now recognised as one of the critical factors affecting component’s lifetimes.
The current study involves an assessment of the key drivers of TMF on crack initiation and propagation in CMSX-4®, a single crystal nickel superalloy widely used in hot section components. Targeted TMF tests are employed to better understand the impact and interaction of oxidation, fatigue, and oxidation damage on TMF life. To assess crack initiation and damage accumulation in-situ, acoustic emissions testing and infra-red thermography are used during TMF testing. This is supported by a microstructural scale investigation into the effect of rafting on crack propagation. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Mechanical Properties, High-Temperature Materials, Other |