Approval of production waste application as modifiers of aluminum alloys

Abstract

The results of a study of the effect of modifying additives from production waste of microsilica and corundum (Al₂O₃) powders on the structure and phase composition of the AD31 aluminum alloy are presented. In the conditions of the Karaganda Industrial University, melting of the AD31 aluminum alloy was carried out with the addition of 1% of waste powder of silicon production «Silicium Kazakhstan» (now «Tau-Ken Temir») (microsilica grade MK-85) and corundum powder (abrasive waste from cutting discs) as modifiers. The positive effect of modifying additives from industrial waste on the structure and properties of the alloy is revealed - the grain is refined, the phase composition changes, and the properties of modified aluminum alloys improve. To study the samples of the obtained modified alloys, the authors used the method of electron microscopy, as the simplest and fastest way to transfer information about the microstructure, elemental composition and distribution of elements in the sample volume. The conducted studies are relevant from the point of view of recycling waste from metallurgical industries, expanding the raw material base, as well as obtaining new materials with the required complex of functional properties