On the time-temperature-transformation behaviour of a new dual-superlattice nickel-base superalloy
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
MetadataShow full item record
Mignanelli, P., Jones, N., Hardy, M., & Stone, H. (2018). On the time-temperature-transformation behaviour of a new dual-superlattice nickel-base superalloy. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49 (3), 699-707. https://doi.org/10.1007/s11661-017-4355-8
Recent research has identified compositions of nickel-based superalloys with microstructures containing appreciable and comparable volume fractions of γ′ and γ″ precipitates. In this work, an alloy capable of forming such a dual-superlattice microstructure was subjected to a range of thermal exposures between 873 and 1173 K (600 and 900 ˚C) for durations of 1 to 1000 hours. The microstructures and nature of the precipitating phases were characterised using synchrotron X-ray diffraction and electron microscopy. These data have enabled the construction of a T-T-T diagram for the precipitating phases. Hardness measurements following each thermal exposure have identified the age-hardening behaviour of this alloy and allowed preliminary mechanical properties to be assessed.
The authors would like to thank K. Roberts and S. Rhodes for experimental assistance, and acknowledge funding through the EPSRC/Rolls-Royce strategic partnership EP/M005607/1 and EP/H022309/1 as well as from the Diamond Light Source for the provision of beam time (EE9270).
UNIVERSITY OF BIRMINGHAM (FB EPSRC) (EP/H022309/1)
Embargo Lift Date
External DOI: https://doi.org/10.1007/s11661-017-4355-8
This record's URL: https://www.repository.cam.ac.uk/handle/1810/273327
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/
Recommended or similar items
The following licence files are associated with this item: