Abstract: Aluminum foams are a new class of structural and functional materials. It has a bright prospect in engineering field. In order to study the effects of matrix materials on the mechanical properties and deformation mechanism of aluminum foam and endow industrial aluminum foam with a more useful and reliable performance index, two kinds of industrial foams, Al-matrix and 7050 Al-alloy-matrix foams, were studied. The results showed that the compressive mechanical properties of 7050 Al-alloy-matrix foam was much higher than that of Al-matrix foam, so was its energy absorption ability. The deformation mechanism of Al-matrix foam was that the cells collapsed layer by layer during deformation, continuously. The outside materials of Al-matrix foam peeled off during the compression remarkably and compressed to be crumbs finally. The deformation mechanism of 7050-matrix foam was that the cells collapsed layer by layer during the deformation, discontinuously. The specimens were still whole bulks after compression finally. The cell structure of 7050-matrix foam was more uniform than that of Al-matrix foam in the present study, therefore its mechanical stability was better than Al-matrix foam.
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2017, Vol. 31 
