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The mechanical properties of Al-Mg alloy foams produced by powder 125 using Boric acid as foaming agent

  • : İbrahim Çelikyürek1, Neşe Öztürk Körpe1, Dilek Dur1, Başak Hatırnaz1
  • : 1Eskişehir Osmangazi University
  • : PDF Download
  • : 2014

Abstract

Spherical boric acid powder has been used to produce Al-Mg alloy foams by space holder technique via powder metallurgy route. Using boron products such as boric acid as a pore forming agent is different from the ones used in literature. Al-6%Mg was produced by mechanical alloying method. The geometrical density of the foam was 1.1 g/cm3 and the mean pore size was about 1 mm. Al-6%Mg alloy foam samples with 40 % porosity were successfully produced. The microstructure characteristics were evacuated and quasi-static compressive behaviors of the foam were investigated at strain rate of 10−3s−1. The foams showed an elastic region at an initial stage, then a plateau region with a nearly constant flow stres (about 8MPa) to a large strain of about 80%, and finally a densification region where the stress increased rapidly.
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