Compressive Mechanical Behavior of Closed-Cell Hybrid Metallic Foam Under Quasi-Static Loading

In our present investigation, a hybrid aluminum metal matrix composite foam structure is fabricated having a composition of aluminum alloy (LM-13) with varying concentrations of CaCO3 (2 wt.%, 2.5 wt.%, and 3 wt.%) as a blowing agent being reinforced with concentrations of weight 3% of boron carbide (B4C) and 0.5% of graphene nanoparticles, respectively, has been investigated for its mechanical behavior under quasi-static uniaxial compressive loading for bare foam. compressive strength, energy absorption behavior, and stress–strain characteristic behavior). In addition to this, the microstructural surface morphology of the fabricated hybrid metallic foam sample was also analyzed using optical microscopy and Scanning Electron Microscopy (SEM) for the analysis of pore size, pore circularity, porosity percentage, and distribution along with cell wall thickness of the foam sample for the composition mentioned above. This paper deals with the compressive mechanical behavior with respect to the variation in relative density of the foam samples and the effect of pore structure morphology on the compressive strength and energy-absorbing capacity of the hybrid composite foam material.