Effect of temperature on the indentation behavior of closed-cell aluminum foam

► Indentation behavior of aluminum foam under different temperatures is explored. ► The indentation deformation has some slight lateral spread. ► Plastic collapse strength, tear energy and energy absorbed are temperature dependent. ► Empirical formula combined indentation depth and test temperature effect is present. Deep indentation response of closed-cell aluminum foam under different temperatures was experimentally investigated by using flat-ended and hemispherical-ended punches and compared with that under uniaxial compression. Cross-sectional views show that the deformation is roughly confined to the material directly underneath the indenter though has slight lateral spread. The plastic collapse strength, tear energy and energy absorption are found to be temperature dependent. An empirical formula incorporating indentation depth effect and test temperature effect is presented for the tear energy.