- PII
- S30345391S0869573325053342-1
- DOI
- 10.7868/S3034539125053342
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume / Issue number 5
- Pages
- 33-42
- Abstract
- Mathematical modeling of the motion and cooling rates of VT6 alloy powders (granules) obtained from an ingot by plasma-centrifugal spraying is performed. Calculations are performed for particles with diameters of 30, 50 and 70 µm in an inert gas environment of 90% He-10% Ar at an electrode rotation speed of 25000 min. It is shown that molten particles of all sizes solidify at close distances (~10 cm) from the molten electrode surface. The particle cooling rates at the initial stage of motion reach values of 3.6 10–1.5 10 K/s. The time intervals of particle crystallization (their complete solidification) were ~0.3–1 ms. Changes in the microstructure, microhardness, chemical and phase compositions of VT6 alloy granules obtained after separation into three fractions are studied. Using X-ray microanalysis in SEM, a uniform distribution of the main elements over the granule cross-section was noted, as well as a slight difference in the chemical composition of different fractions, which generally indicates the homogeneity of the obtained powder. It was shown that the structure of particles of different fractions differs in the parameters of the crystal lattice and is a mixture of two solid solutions, which is probably due to the difference in cooling rates and the content of alloying components. It was noted that in granules after centrifugal spraying, the microhardness values increase (compared to the original ingot), while with an increase in the average diameter of the particles, the average microhardness values decrease.
- Keywords
- адаптивные технологии центробежное распыление титановый сплав ВТ6 математическое моделирование микроструктура
- Date of publication
- 08.12.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 18
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