Formation of porosity in Al-Si alloys

Porosity is one of the major defects in aluminum castings, which results in a decrease of the mechanical properties. It is induced by several mechanisms (solidification shrinkage and gas segregation). One of the method for complex evaluation of macro and micro porosity in Al-Si alloys is Tatur test technique. This article deals with evaluation of porosity with help of Tatur tests for selected Al-Si alloys. These results will be compared with results obtained from simulation software ProCAST.