THE PROCESS OF OBTAINING AL-15Fe POWDER WITH DISPERSION STRENGHENED MICROSTRUCTURE BY CENTRIFUGAL ATOMIZATION

Abstract

Theoretical studies of the conditions for obtaining powders of the Al-15Fe alloy by the method of mechanical dispersion have been carried out. It is shown that with a change in the particle size, energy carrier velocity, and melt temperature, the cooling rate changes significantly. It has been established that obtaining the optimal microstructure of the Al-15Fe alloy with a dispersion-reinforced structure is possible at a cooling rate of more than 107 °C/s, which is achieved for an average size of less than 50 μm, an energy carrier velocity of about 200 m/s, and an energy carrier temperature above 1250 °C. . It has been established that for particles obtained by mechanical dispersion with an average size above 100 μm, the intermetallic phases have a size of 10-12 μm, and for particles less than 50 μm - 3-5 μm, which is subjected to extrusion to dispersion-strengthened materials.