| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
|
| Presentation Title |
Comparison of Laboratory-generated and Ex-service Fractography for a 4th Generation Single Crystal Ni-based Superalloy |
| Author(s) |
Jane Woolrich, Simon Gray, Ian Edmonds, Edward Saunders, Catherine Rae |
| On-Site Speaker (Planned) |
Jane Woolrich |
| Abstract Scope |
The aerospace approach to fracture analysis is fundamentally ‘understand and fix’ before escalation to ‘break and replace’. As such, a detailed understanding of fractography is key to underpinning aerospace safety. Introduction of new alloys into a gas turbine engine does, occasionally, result in the exhibition of novel fractography, which must be understood to implement fleet mitigations and demonstrate continued safety and airworthiness. The original ex-service fractography from a 4th generation SX alloy component is compared with that generated under various laboratory conditions, and is presented with a detailed analysis of the crack propagation data from dwell fatigue testing. These results suggest an important element of mechanical control of fatigue crack growth following surface-initiating crack formation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, |