Measurement of the effective γ/γ′ lattice mismatch during high temperature creep of Ni-based single crystal superalloy

► Measurement of the γ/γ′ lattice mismatch (δ) using three techniques (TEM, SEM, XRD) ► Post-mortem techniques (SEM/TEM) = measurement of the last high temperature δ. ► Post-mortem techniques insensitive to the regularity of the interfacial network ► δ is sensitive to the whole thermomechanical history.