Strength and pore morphology of porous aluminum and porous copper with directional pores deformed by equal channel angular extrusion

▶ Porous aluminum and porous copper with cylindrical pores oriented in one direction were deformed by equal channel angular extrusion using 150° die. ▶ Pores of porous aluminum with low porosity were collapsed by extrusions that were both parallel and perpendicular to orientation direction of pores. ▶ Yield strength of porous copper with high porosity drastically increased by extrusions that were parallel to orientation direction of pores, even though there was small decrease in porosity. ▶ Almost all pores of porous copper collapsed by extrusions that were perpendicular to orientation direction of pores.