Experimental investigation on uniaxial tensile properties of high-porosity metal fiber sintered sheet

A novel porous metal fiber sintered sheet (PMFSS) with a three-dimensional network structure has been produced via solid-state sintering of copper fibers. The copper fibers, approximately 100 μm in diameter, were fabricated using the cutting method. In this study, a uniaxial tensile test was used to study the tensile fracture process of the PMFSS. The effect of the porosity and sintering parameters on the tensile properties of the PMFSS was investigated in detail. It was found that the tensile strength of the PMFSS decreased significantly with an increase in the porosity, but the elongation remained relatively constant with different porosities. In addition, for sintering temperature between 700 °C and 900 °C, the tensile strength increased with increasing sintering temperature and decreased with increasing sintering time.