Aluminium alloy syntactic foams reinforced with iron hollow spheres were produced by low pressure,
liquid phase inert gas infiltration technique. Four Al alloys (Al99.5, AlSi12, AlMgSi1 and AlCu5) and
Globomet grade iron hollow spheres were used as matrix and reinforcing material, respectively. The produced
composite blocks were characterised according to the ruling standard for compression of cellular
materials in order to ensure full comparability. The compressive test results showed plastic yielding and a
long, slowly ascending plateau region that ensures large energy absorption capability. The proper selection
of the matrix material and the applied heat treatment allows for a wide range of tailoring of the
mechanical properties. For design purposes, the full-scale finite element method (FEM) model of the
investigated foams was created and tested on Al99.5 matrix foams. The FEM results showed very good
agreement with the measured values (typically within 5% in the characteristic properties and within
10% for the whole compression curve).
Aluminium alloy syntactic foams reinforced with iron hollow spheres were produced by low pressure,liquid phase inert gas infiltration technique. Four Al alloys (Al99.5, AlSi12, AlMgSi1 and AlCu5) andGlobomet grade iron hollow spheres were used as matrix and reinforcing material, respectively. The producedcomposite blocks were characterised according to the ruling standard for compression of cellularmaterials in order to ensure full comparability. The compressive test results showed plastic yielding and along, slowly ascending plateau region that ensures large energy absorption capability. The proper selectionof the matrix material and the applied heat treatment allows for a wide range of tailoring of themechanical properties. For design purposes, the full-scale finite element method (FEM) model of theinvestigated foams was created and tested on Al99.5 matrix foams. The FEM results showed very goodagreement with the measured values (typically within 5% in the characteristic properties and within10% for the whole compression curve).
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