Microstructural influence in closed cell aluminium foam for structural application
by R. Edwin Raj, B.S.S. Daniel
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 4, No. 4, 2009

Abstract: Two sets of aluminium foams were made by degassing the calcium stabilised aluminium melt with titanium hydride. One set contained Al₂₀CaTi₂ and Al₂Cu dispersion in the cell wall matrix, whereas, the second set contained Al₁₃Fe₄ particles, along with the other intermetallics. The foam containing iron intermetallics as elongated platelets of higher aspect ratio showed excellent foam stability and higher plateau stress. However, there is a gradual decrease in stress levels in the plateau region during the compression test. This behaviour reduces the advantage of obtaining high energy absorption per unit volume.

Online publication date: Tue, 02-Feb-2010

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