This paper deals with influence on segregation of iron based phases on the secondary alloy AlSi7Mg0.3 microstructure by nickel. Iron is
the most common and harmful impurity in aluminum casting alloys and has long been associated with an increase of casting defects. In
generally, iron is associated with the formation of Fe-rich intermetallic phases. It is impossible to remove iron from melt by standard
operations. Some elements eliminates iron by changing iron intermetallic phase morphology, decreasing its extent and by improving alloy
properties. Realization of experiments and results of analysis show new view on solubility of iron based phases during melt preparation
with higher iron content and influence of nickel as iron corrector of iron based phases.