| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Microstructural evolution in a new low-cost polycrystalline Ni-base superalloy for elevated temperature structural applications |
| Author(s) |
George J. Wise, Paul M. Mignanelli, Mark C. Hardy, Nicholas G. Jones, Howard J. Stone |
| On-Site Speaker (Planned) |
George J. Wise |
| Abstract Scope |
There is significant industrial appetite for low-cost polycrystalline Ni-base superalloys that can be utilised in static and rotating applications at intermediate temperatures. Such alloys could find service in the aerospace, power generation and petrochemical sectors, facilitating improved performance and enhanced efficiency across a wide range of industrial processes. Through judicious control of the refractory element content and the Al/Nb ratio, new alloys have been designed that improve on the thermal stability and mechanical performance of Inconel718. The alloys are expected to be readily amenable to conventional cast & wrought processing methods, producing fully recrystallised microstructures with minimal hot working, whilst retaining excellent weldability and lower overall processing costs than advanced cast and wrought alloys such as Alloy 720Li and René65. This work reports on the phase equilibria and microstructural evolution in a newly developed alloy, highlighting how they affect the mechanical properties and weldability whilst identifying key areas for development. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, |