The influence of the spheroidization process on the fractional composition and morphology of alloy VKNA-4U in a particle-reinforced sheath Al2O3–Y2O3

Rodionov A.I., Efimochkin I.Yu., Samokhin A.V., Sinayskiy M.A.
UDC
669.017.165:669.245
DOI
10.18577/2307-6046-2019-0-11-12-21
Article PDF (Russian) (1.03 MB)
How to cite
Rodionov A.I., Efimochkin I.Yu., Samokhin A.V., Sinayskiy M.A. The influence of the spheroidization process on the fractional composition and morphology of alloy VKNA-4U in a particle-reinforced sheath Al2O3–Y2O3 // Proceedings of VIAM. 2019. No. 11. DOI: 10.18577/2307-6046-2019-0-11-12-21. URL: https://test.viam.ru/en/journal/2019/11/2
Keywords
VKNA-4U alloy, mechanical alloying, plasma spheroidization, reinforcing filler.
Abstract

This article discusses the influence of the plasma spheroidization process on the morphology, microstructure and fractional composition of the VKNA-4U alloy reinforced with Al2O3–Y2O3 particles. During the experiment, it was found that the process of spheroidization significantly affects the morphology of the granuls. Studies show how the morphology of particles changes. After machining, the particles have a fragmentation shape. Due to the process of spheroidization, the granuls take a rounded shape, which affects such a parameter as fluidity, which is necessary for use in plants for additive manufacturing. When analyzing the microstructure, it was found that the particles of the reinforcing filler after plasma spheroidization are shifted to the surface of the granule, in contrast to the initial state after mechanical doping, where the particles of the reinforcing filler are evenly distributed in the volume of the granules.

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