Authors: D P Papadopoulos H Omar F Stergioudi S A Tsipas H Lefakis N Michailidis
Publish Date: 2010/01/26
Volume: 17, Issue: 6, Pages: 773-777
Abstract
Closedcell aluminium foams were produced by a melt foaming process using MgCaCO32 dolomite as foaming agent XRD analysis was used to follow the crystallization behaviour of the Alfoam which occurred during the foaming process The compressive properties of these Alfoams and their deformation behavior were investigated The structure and the mechanisms of failure were examined by scanning electron microscopy SEM supported with an in situ microtest Deformation is uniform and strain hardening is observed without a plateau stress The strength of the Alfoams rises with increasing the relative density Failure of the foams is mainly attributed to brittle fracture of the cell walls rather than to their plastic buckling leading in this way to a reduced energy absorption ability
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