The effect of γ matrix channel width on the compositional evolution in a multi-component nickel-based superalloy

Saksena A, Kubacka D, Gault B, Spiecker E, Kontis P (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 219

Article Number: 114853

DOI: 10.1016/j.scriptamat.2022.114853

Abstract

High-temperature diffusion affects the long-term stability of superalloys and hence their service life. Yet, details of the mechanisms remain elusive. Here, the γ-γʹ microstructure itself is used as a nanoscale diffusion couple to study the diffusion of alloying elements within narrow and wide γ channels during annealing for up to 100 h at 750 °C in a nickel-based superalloy. Predictions from thermodynamic and kinetic calculations are compared to near-atomic experimental measurements as a function of the γ channel width. An overlooked width-dependence of compositional evolution is revealed that may directly affect the microstructural and compositional predictions of service life of nickel-based superalloys.

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How to cite

APA:

Saksena, A., Kubacka, D., Gault, B., Spiecker, E., & Kontis, P. (2022). The effect of γ matrix channel width on the compositional evolution in a multi-component nickel-based superalloy. Scripta Materialia, 219. https://doi.org/10.1016/j.scriptamat.2022.114853

MLA:

Saksena, Aparna, et al. "The effect of γ matrix channel width on the compositional evolution in a multi-component nickel-based superalloy." Scripta Materialia 219 (2022).

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