Compressive properties of aluminum foam produced by powder-Carbamide spacer route: Fid-Bau Portal

Compressive properties of aluminum foam produced by powder-Carbamide spacer route

Bafti, Hasan / Habibolahzadeh, Ali

Highlights • We made aluminum foam by powder metallurgy rout using Carbamide spacer. • We examine effect of pore shape, pore size and relative density on compressive properties. • We found compressive properties increase by cell size and relative density of foam. • The results show good agreement with theoretical equations.

Abstract Effects of cell shape and size, and relative density of aluminum foam on its compressive behavior have been investigated. Aluminum foams were produced via aluminum powder-Carbamide spacer route. The results show that angular cells significantly reduce mechanical properties of the foam. They also indicate that compressive properties of the foams, including plateau stress (σ pl), densification strain (ε D), and energy absorption, increase by cell size and relative density of the foams. Experimental results were compared with theoretical predictions; they were fairly corresponded to theoretical conceptions; this arises from near-ideal architecture of the foams with almost spherical cells, in this study. Constant values of C, n and α in theoretical modulus and densification strain equations wear calculated as 1.22, 2.09 and 0.95, respectively. The values indicate compressive behavior approaches to ideal morphology foam via employing spherical space holder.