About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation and Damage Mechanisms of High Temperature Alloys
|
Presentation Title |
In Situ Characterisation of the Thermomechanical Deformation Behaviour of Powder Processed Ni-based Superalloys |
Author(s) |
Frances E. Synnott, Lewis R. Owen, Howard J. Stone, Nicholas G. Jones, Paul M. Mignanelli, Mark C Hardy, Martin Jackson, Katerina A. Christofidou |
On-Site Speaker (Planned) |
Frances E. Synnott |
Abstract Scope |
Polycrystalline Ni-based superalloys are continuously evolving in order to enable improved properties and higher operating temperatures in critical applications in the aerospace industry. Compositional modifications are sought that can improve both the mechanical and environmental performance of new alloys. To understand the relative merits of Ti and Ta co-additions on the deformation of polycrystalline superalloys, three powder-processed alloys with varying Ti:Ta ratios were investigated in situ under tensile loads in the temperature range 600-800◦C using advanced synchrotron X-ray diffraction. The results enabled the quantification of the effect of the co-additions on the lattice misfit, elastic constants, and load partitioning between the γ and γ′ phases as a function of composition and temperature, providing invaluable information on the deformation characteristics of the constituent phases. This work was supported by Rolls-Royce plc, SFI [18/EPSRC-CDT/3584] and the EPSRC [EP/S022635/1]. Data was collected at the Diamond Light Source [EE9270] and the ESRF [ME1344]. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Characterization, |