Effect of SiC on microstructural features and compressive ‎properties of aluminum foam


1 Materials Research Group, Iranian Academic Center for Education, Culture and Research ‎‎(ACECR), Mashhad Branch, P.O. Box 91775-1376, Azadi Square, Mashhad, Iran‎

2 Department of Materials Science and Engineering, Sharif University of Technology


Composite aluminum-SiC foam was manufactured by injection of air and addition of reinforcement particles into the liquid aluminum. Microstructure and mechanical properties of the Al/SiC foams were investigated by scanning electron microscopy and compression tests. Results showed that both the cell size and the wall thickness augmented with increasing of the SiC reinforcement particles; while SiC particles resulted in the reduction of the plateau border length. With more SiC particles, plateau stress became larger; but maximum plateau strain became smaller. The stress-strain curves exhibited serrations in the plateau region due to addition of the SiC particles.