UDC
669.018.44:669.24
DOI
10.18577/2307-6046-2026-0-8-17-29
Article PDF (Russian) (1.63 MB)
How to cite
Zaitsev D.V., Petrushin N.V., Rimsha E.G., Lukina E.A. Re and Ru influence on the microstructure formation and phase composition of single-crystal nickel-based superalloys during heat treatment and high-temperature creep.. Part 1 // Proceedings of VIAM. 2026. No. 8 (162). С. 17-29. URL: https://www.viam-works.ru. DOI: 10.18577/2307-6046-2026-0-8-17-29.

Re and Ru influence on the microstructure formation and phase composition of single-crystal nickel-based superalloys during heat treatment and high-temperature creep.

Part 1
Zaitsev D.V., Petrushin N.V., Rimsha E.G., Lukina E.A.
Abstract

Samples of rhenium-containing alloy VIN4M and rhenium-ruthenium-containing alloys VZhM8 and VZhM10 after complete heat-treatment were studied. It was shown that interphase dislocations are observed in the axes of dendrites. In the structure of the VIN4M alloy, the boundaries of large y'-phase particles are decorated with dislocation clusters forming regular networks. The misfit in the VIN4M alloy is 0,60 % for large formations of the y'-phase in the interaxial spaces and 0,63 % for y'-phase particles in the axes of dendrites. The lowest misfit value of 0,46 % was obtained for the VZhM8 alloy, the highest 0,97 % – for the VZhM10 alloy. Stacking faults in the alloys are formed in γ-interlayers between lattice mismatch dislocations at the opposite boundaries of adjacent particles.

Keywords
single crystals, γ/γ'-misfit, creep, deformation defects of the crystal structure, nickel-based superalloys, rhenium, ruthenium

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