Abstract
Light alloys based on the Al-Fe-Si system are very attractive and are currently studied in detail by material scientists. Against the background of the transition to the use of recycled tip with an increased content of iron and silicon becomes especially relevant. In this article, the prediction of an aluminum intermetallic alloy, completely consisting of intermetallics, is performed. Using ThermoCalc software, numerical simulation was carried out to study the phase composition of the three-component system. Using analytical calculations, it was possible to establish the ratio of iron to silicon, which determines the type of secondary precipitation: structurally free silicon, or the intermetallic phase Al13Fe4. This ratio is valid for ternary alloys with a change affects more than 64%.