Phase evolution in an Al0.5CrFeCoNiCu High Entropy Alloy
MetadataShow full item record
Jones, N., Izzo, R., Mignanelli, P., Christofidou, K., & Stone, H. (2016). Phase evolution in an Al0.5CrFeCoNiCu High Entropy Alloy. Intermetallics, 71 43-50. https://doi.org/10.1016/j.intermet.2015.12.001
The phase evolution of an Al₀.₅CrFeCoNiCu High Entropy Alloy has been characterised following isothermal exposures between 0.1 and 1000 hours at temperatures of 700, 800 and 900˚C. The NiAl based B2 phase formed extremely quickly, within 0.1 hours at the higher exposure temperatures, whilst the Cr-rich σ phase formed more slowly. The solvus temperatures of these two phases were found to be ~ 975 and ~ 875˚C respectively. Compilation of the data presented here with results previously reported in the literature enabled the production of a time-temperature-transformation diagram, which clearly indicates that the diffusion kinetics of this material cannot be considered sluggish.
high-entropy alloys, phase transformation, heat treatment, electron microscopy, scanning
The authors would like to thank K. Roberts and S. Rhodes for their assistance, and the EPSRC/Rolls-Royce Strategic Partnership (EP/M005607/1 and EP/H022309/1) for funding.
UNIVERSITY OF BIRMINGHAM (FB EPSRC) (EP/H022309/1)
Embargo Lift Date
External DOI: https://doi.org/10.1016/j.intermet.2015.12.001
This record's URL: https://www.repository.cam.ac.uk/handle/1810/252927
Attribution 2.0 UK: England & Wales
Licence URL: http://creativecommons.org/licenses/by/2.0/uk/