Microstructural Evolution in Investment Casted Open-pore Aluminum-based Alloy Foams

In the present study open-pore metal foams of the high purity alloys AlSi7 and AlZn11Mg1 as well as the technical purity alloys AA5019 and AA7050 are manufactured by investment casting. Subsequently, their microstructural evolution is characterized at different distances to the deadhead to illustrate the influence of the depth-dependent cooling conditions.