Effects of strain rate and SiC particle on the compressive property of SiC p/AlSi 9Mg composite foams

Abstract

The AlSi 9Mg composite foams reinforced by SiC particles (SiC p/AlSi 9Mg composite foams) were fabricated with the direct foaming route of melt using CaCO 3 blowing agent. The static and dynamic compressive behaviors of the composite foams were investigated utilizing CMT5205 electron universal testing machine and a Split Hopkinson Pressure Bar system, respectively. The experimental results show that the yield stress of SiC p/AlSi 9Mg composite foams increases with increasing strain rate, the strain hardening occurs during the compression at high strain rate, and SiC p/AlSi 9Mg composite foams is more sensitive to the strain rate than Al and Al alloy foams. The yield stress of SiC p/AlSi 9Mg composite foams with different volume fractions of SiC particles at high strain rate increases with the increase of the volume fraction of SiC particles.