Fabrication and compressive behavior of open-cell aluminum foams via infiltration casting using spherical CaCl2 space-holders

The infiltration casting fabrication process based on spherical CaCl2 space-holders and the compressive behavior including mechanical performance energy absorption capacity of open-cell aluminum foams were investigated. Open-cell with different porosities in range 63.1% to 87.3% can be fabricated by adjusting compression ratios preforms prepared precision hot-pressing. tests show that a strain-hardening phenomenon always occurs especially for foam low porosity, resulting inclining stress-strain curve plateau region. decreases increasing porosity when compared at same strain. However, given stress, each absorb maximal among five special stress range. Additionally, possesses maximum efficiency its optimum operating stress. At this condition, highest other point. corresponding decrease porosity. also determined similarly taking into consideration lightweight extent foams.