|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
||Comparison of laboratory-generated and ex-service fractography for a 4th generation single crystal Ni-based superalloy
||Jane Woolrich, Simon Gray, Ian Edmonds, Edward Saunders, Catherine Rae
|On-Site Speaker (Planned)
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.
||High-Temperature Materials, Mechanical Properties,