Abstract
An improved diffusion model of pore annihilation during hot isostatic pressing of single crystals of nickel-base superalloys is proposed. The model considers dissolution of pores by emission of vacancies and their diffusion sink to low-angle boundaries. The calculation, which takes into account pore size distribution, predicts the kinetics of pore annihilation similar to experimental one.
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Original Russian Text © A.I. Epishin, B.S. Bokstein, I.L. Svetlov, B. Fedelich, T. Feldmann, Y. Le Bouar, A. Ruffini, A. Finel, B. Viguier, D. Poquillon, 2017, published in Materialovedenie, 2017, No. 5, pp. 3–12.
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Epishin, A.I., Bokstein, B.S., Svetlov, I.L. et al. A Vacancy Model of Pore Annihilation During Hot Isostatic Pressing of Single Crystals of Nickel-Base Superalloys. Inorg. Mater. Appl. Res. 9, 57–65 (2018). https://doi.org/10.1134/S2075113318010100
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DOI: https://doi.org/10.1134/S2075113318010100