Optimization of the solder composition for joining dissimilar EP975 and VKNA-25 alloys using modern computational systems

Galushka I.A., Afanasiev-Khodykin A.N., Panteleev M.D., Zotov S.D.
UDC
621.791
DOI
10.18577/2307-6046-2026-0-2-37-48
Article PDF (Russian) (1.22 MB)
How to cite
Galushka I.A., Afanasiev-Khodykin A.N., Panteleev M.D., Zotov S.D. Optimization of the solder composition for joining dissimilar EP975 and VKNA-25 alloys using modern computational systems // Proceedings of VIAM. 2026. No. 2. DOI: 10.18577/2307-6046-2026-0-2-37-48. URL: https://test.viam.ru/en/journal/2026/2/4
Keywords
brazing, a diffusive brazing, brazing alloy, nickel super alloys, rotor design GTE
Abstract

A nickel-based brazing metal designated VPr56 was developed for high-temperature diffusion brazing of bimetallic blisk-type components made from heat-resistant nickel alloys EP975 (disk) and VKNA-25 (blade). The study examined the influence of alloying elements (Ti, Nb, B) on the brazing metal’s key processing characteristics: melting temperature, wettability, joint uniformity, and susceptibility to erosion of the base metal. Experimental design and regression analysis were applied to optimize the composition. It was shown that VPr56 meets the requirements for joints of gas turbine engines (GTE) joints.

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