Peculiarities of Vapour Phase Transfer During Plasma Treatment of Aluminum Alloys

Processy litʹâ, 2019, Tom 137, №5, p.32-36

Abstract

Received 12.07.2019

UDK 669.715:533.9:643

The deep plasma treatment of alloys makes possible to integrate the melt stirring with hightemperature gas and regulated heating. The use of deep treatment of alloys by plasma allows transferring the matrix melt into equilibrium micro-homogeneous state with further transformation of its components and additions into a vapour that increases the intensity of physical and chemical processes and interfacial interactions in melt with condensation of vapour phases and creation of significant concentration and temperature gradients in matrix alloy. In this work the temperature distribution and movement direction for liquid AK6 aluminum alloy in the reaction zone of plasma jet were defined. The research was executed using computational experiment, mathematical  and computing simulation. The fundamental equation of heat and mass transfer with corresponding boundary conditions was taken as a basis of the mathematical model. The plasma heating was simulated as a concentrated source with constant temperature. The source was placed in the reaction zone of plasma jet immersed into metal.