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

Part 2
Petrushin N.V., Svetlov I.L., Epishin A.I., Elyutin E.S.
UDC
669.245
DOI
10.18577/2307-6046-2025-0-6-13-30
Article PDF (Russian) (1.12 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 2 // Proceedings of VIAM. 2025. No. 6. DOI: 10.18577/2307-6046-2025-0-6-13-30. URL: https://test.viam.ru/en/journal/2025/6/2
Keywords
directional solidification, flat growth front, macrosegregation of alloying elements, nickel- and cobalt-based superalloys, solidus temperature, liquidus temperature, yield strength, oxidation resistance
Abstract

The review considers the practical application of the directional solidification technique with a flat front to obtain castings with height-variable chemical composition (gradient castings with macrosegregation) and to solve problems of physical metallurgy of γʹ-strengthened Ni- and Co-based superalloys. Such problems include: determination of the influence of alloying elements Re, Ru, Ta and Al on the γʹ-solvus, solidus and liquidus temperatures of single-crystal nickel-based alloys, optimization of the chemical and phase composition of single-crystal Ni- and Co-based alloys, determination of the influence of alloying elements Al and W on compressive yield strength and heat resistance of cobalt-based alloys.

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