Effect of nano-modifying additives on titanium carbide dissolution in the titanium melt
A.N. Cherepanov, O.A. Shmagunov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: hardening phase, cladding, nano-modifying additives, dissolution, titanium carbide, numerical simulation
Abstract
A mathematical model of dissolution of a titanium carbide particle in a titanium melt containing nano-sized refractory particles is developed. The model allows one to study the influence of the parameters of the medium with nanoparticles on the stability of dissolution of refractory compounds under the conditions of laser cladding of a nano-modified coating with a hardening phase (titanium carbide). The time needed for the carbon-containing chemical compound to dissolve is determined as a function of the concentration of the nano-modifying additive, inclusion size, and melt temperature. It is found that the presence of nanoparticles in the fluid reduces the mass transfer intensity, resulting in a longer time of solid inclusion dissolution.
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