An investigation on thermodynamics and kinetics of η phase formation in Nb-modified iron-nickel base A286 superalloyReza Soleimani Gilakjani, Seyed Hossein Razavi and Masoumeh SeifollahiMetall. Res. Technol., 118 1 (2021) 105DOI: https://doi.org/10.1051/metal/2020084