Development of directional solidification method to solve the problems of physical metallurgy of nickel- and cobalt-based superalloys

Part 1
Petrushin N.V., Svetlov I.L., Epishin A.I., Elyutin E.S.
UDC
669.245
DOI
10.18577/2307-6046-2025-0-5-3-24
Article PDF (Russian) (1.41 MB)
How to cite
Petrushin N.V., Svetlov I.L., Epishin A.I., Elyutin E.S. Development of directional solidification method to solve the problems of physical metallurgy of nickel- and cobalt-based superalloys. Part 1 // Proceedings of VIAM. 2025. No. 5. DOI: 10.18577/2307-6046-2025-0-5-3-24. URL: https://test.viam.ru/en/journal/2025/5/1
Keywords
directional solidification, flat growth front, macrosegregation of alloying elements, nickel-based alloys, wolfram, rhenium, ruthenium, solidus temperature and liquidus temperature, solubility of element
Abstract

The review considers behavior of components during segregation along the casting height when directional solidification is performed with a flat front and shows practical application of this technique to solve problems of physical metallurgy of nickel-based alloys. Such problems include precise determination of temperature and composition of peritectic and eutectic reactions in nickel-based alloys of the binary system Ni–Al; determination of the solubility of W and Re in the γʹ- and β-phases of nickel-based alloys of the ternary systems Ni–Al–W and Ni–Al–Re; the solubility of Re and Ru in the γʹ- and β-phases in the quaternary system Ni–Al–Re–Ru, determination of the lattice spacing and interdiffusion coefficients in the γ-solid solution of nickel in the binary system Ni–Re.

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