Mathematical modeling of aluminum evaporation during electron-beam cold-hearth melting of Ti-6Al-4V ingots

A mathematical model was developed to describe the kinetics of aluminum evaporation during the electron-beam cold-hearth melting of titanium alloys. The analysis treated the diffusion of aluminum to the surface of the melt, chemical reaction between the melt and vapor phases at the surface, and the...

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Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2003-08, Vol.34 (4), p.447-454
Main Authors: AKHONIN, S. V, TRIGUB, N. P, ZAMKOV, V. N, SEMIATIN, S. L
Format: Article
Language:English
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Applied sciences
Exact sciences and technology
Metallurgical fundamentals
Metals. Metallurgy
Production of metals
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description A mathematical model was developed to describe the kinetics of aluminum evaporation during the electron-beam cold-hearth melting of titanium alloys. The analysis treated the diffusion of aluminum to the surface of the melt, chemical reaction between the melt and vapor phases at the surface, and the transport of aluminum into the vacuum chamber. The kinetics equation was combined with appropriate mass and energy balance equations to determine the effect of melting rate, the electron-beam power input to the melt pool in the hearth and the mold, and charge chemistry on the composition of the cast ingot. The model was validated by comparison to measurements for Ti-6Al-4V processed under a wide range of conditions.
doi_str_mv 10.1007/s11663-003-0071-4
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Exact sciences and technology
Metallurgical fundamentals
Metals. Metallurgy
Production of metals
title Mathematical modeling of aluminum evaporation during electron-beam cold-hearth melting of Ti-6Al-4V ingots
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