Compressive behaviours of lotus-type porous copper fabricated by Gasar process

The lotus-type porous copper with various pore structural parameters was fabricated by a novel solid-gas eutectic solidification process (the Gasar process). The effects of porosity and the Angle between load direction and pores axis (ALP) on compressive behaviours of porous copper were investigated. The results show that the compressive stress-strain curves vary with porosity and compressive direction. Under the same compressive direction, as the porosity increases, the compressive yield strength of the porous copper decreases. The compressive properties of the porous copper show obvious anisotropy, and the yield strength of the porous copper decreases with increasing the angle between pore axis and compressive direction. The Deformation mechanisms analyzed by finite element simulation (FES) are well consistent with experiment process for the samples with ALP of 0° and 90°.