The effect of impurities on mechanical and operational properties of the cast nickel-base superalloy VZhM200

Min P.G., Vadeev V.E., Kolesnikov S.I., Chemov D.A.
UDC
669.018.44:669.245
DOI
10.18577/2307-6046-2024-0-10-13-23
Article PDF (Russian) (717.77 KB)
How to cite
Min P.G., Vadeev V.E., Kolesnikov S.I., Chemov D.A. The effect of impurities on mechanical and operational properties of the cast nickel-base superalloy VZhM200 // Proceedings of VIAM. 2024. No. 10. DOI: 10.18577/2307-6046-2024-0-10-13-23. URL: https://test.viam.ru/en/journal/2024/10/2
Keywords
cast heat-resistant nickel-base superalloy, directional crystallization, impurities, mechanical properties, long-term strength, fatigue
Abstract

The results of the study of the effect of sulfur, phosphorus, silicon and nitrogen impurities on the main properties of the high-temperature nickel alloy VZhM200 for blades casting with a directional structure of the PD-8 gas turbine engine: long-term, fatigue strength and short-term mechanical properties are presented. It was found that with an increased content of these impurities in the alloy, the time to destruction decreases at T = 1000 °C at bases of 100, 500 h and plasticity at T = 20 °C. It was also found that the number of cycles to failure was reduced when tested for high-cycle fatigue at T = 900 °C in the alloy with the addition of silicon and nitrogen.

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