Atomistic simulation for the γ′-phase volume fraction dependence of the interfacial behavior of Ni-base superalloy

► The stability of the Ni-base superalloy with (60-70)% γ′-VF is the most excellent. ► The interface energy is independent of the γ′-VF. ► The critical thickness of the ITR is about 1.7 nm at 300 K. ► The strengthening effect of the γ′-VFphase is the most obvious for NBSA with (60-70)% γ′-VFVF.