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Influence of Nickel Addition on Properties of Secondary AlSi7Mg0.3 Alloy

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Richtárech L. , Bolibruchová D. , Brůna M. , Caiss J.

Archives of Foundry Engineering

2015

tom Vol. 15, iss. 2

95--98

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.