Calculated estimation of the structural-phase and thermodynamic characteristics of the VZhM1, VZhM4 and VZhM8 alloys

Movenko D.A., Zaysev D.V.
UDC
669.018.44:669.245
DOI
10.18577/2307-6046-2026-0-2-13-26
Article PDF (Russian) (1.42 MB)
How to cite
Movenko D.A., Zaysev D.V. Calculated estimation of the structural-phase and thermodynamic characteristics of the VZhM1, VZhM4 and VZhM8 alloys // Proceedings of VIAM. 2026. No. 2. DOI: 10.18577/2307-6046-2026-0-2-13-26. URL: https://test.viam.ru/en/journal/2026/2/2
Keywords
Ni-based superalloys, single crystals, lattice parameters, misfit, solvus temperature, interfacial energy, antiphase boundary energy
Abstract

The article presents the results of a comparative study of the lattice parameters of the γ- and γ'-phases, the γ/γ'-misfit, γ'-solvus temperature, interfacial energy at the γ/γ' boundary and the antiphase boundary energy of single-crystal superalloys of the third to fifth generation. The focus was made on the dependence of these characteristics on the temperature and composition of the alloys. The calculations were carried out using thermodynamic modeling. It was found that the VZhM8 alloy has the highest values of misfit and γ'-solvus temperature; the VZhM4 alloy has the lowest interfacial energy at the γ/γ' boundary; the VZhM1 alloy has the highest antiphase boundary energy.

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