measure the lattice misfit in the single-crystal nickel-base superalloy SC16. A three-peak
model, one belonging to the precipitate phase γ′ and two to the matrix γ, was used to fit the
diffraction peaks. Room-temperature (RT) contour plots and a temperature scan up to 1170
K revealed that the misfit evolves together with the measured thermal expansion difference
between the γ and γ′ phases. This suggests that the origin of the misfit lies in the different …