METHOD OF PRODUCING OF MODIFIED ALUMINIUM ALLOYS

摘要

FIELD: metallurgy.SUBSTANCE: molten aluminium alloy at the temperature 750÷800°C is added by cryolite powder NaAlF6 wt %, after the minimum time period 10 minutes the molten metal is added by modifier 5÷6 wt % at simultaneous activation of the molten metal within no less than 20 minutes by mechanical mixing and/or by ultrasonic oscillations at the frequency 10 kHz, and/or electromagnetic field with the frequency 40 Hz. The modifier is the mix mixed down to the uniform state consisting of nanopowder of 20 wt % titanium, 5 wt % carbon nanopowder and 75 wt % cryolite powder.EFFECT: increase of strength and wear resistance of the disperse strengthened alloys due to formation of in situ of nanoparticles of titanium carbide evenly distributed in the aluminium die.1 dwg, 1 ex