Morphology and elastic properties of aluminum foams produced by a casting technique

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)1487-1494
Journal / PublicationScripta Materialia
Volume38
Issue number10
Publication statusPublished - 14 Apr 1998
Externally publishedYes

Abstract

AA6101 aluminum foams (composition in weight %: Al-0.6 Mg-0.5 Si) were fabricated by using a directional solidification technique. The 3-D morphology of the foams was examined using synchrotron x-ray tomography and the results revealed relatively uniform, open-celled structures. The mechanical (compression) behavior of the foams was also characterized. The stress-strain curves exhibited a typical three-stage behavior: elastic, nearly-perfect plastic (i.e. with a stress plateau), and densification. The elastic moduli of a 10%-dense foam in the directions that are transverse and parallel to the solidification direction were measured to be 630 and 670 MPa, respectively. Theoretical calculations of the modulus using a FEM method with the element-by-element (EBE) formalism were also carried out. The calculated values of approximately 570 and 635 MPa compared favorably with the experimental data.

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Citation Format(s)

Morphology and elastic properties of aluminum foams produced by a casting technique. / Nieh, T. G.; Kinney, J. H.; Wadsworth, J.; Ladd, A. J.C.

In: Scripta Materialia, Vol. 38, No. 10, 14.04.1998, p. 1487-1494.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review