Characterization of Nanosized Clusters and Transition Layers of Contacting γ- and γ'-Phases in a Ni-Based Superalloy

An analysis of results obtained from studying the granulable the granulable nickel-based superalloy VV751P with the Ni–15Co–12Cr–0.7V–0.3C–0.9W–2.7Mo–3.4Ti–2.0Nb–8.3Al–0.02Hf–0.008B composition (at %) by atom probe tomography has been performed. Details of the formation of clusters that are 2–5 nm in size consisting of Cr, Co, and Mo atoms within γ'-phase particles are considered; the width of the transition layer between contacting γ- and γ'-phase particles has been determined.