Effect of cold extrusion on physico-mechanical properties of titanium carbide reinforce copper composite

Abstract

In the present study, the copper (Cxi) matrix composite reinforced by titanium carbide (TiC) was fabricated via powder metallurgy> route. Cu-TiC powder mixture was prepared by a high-energy planetary ball milling process for 2h with TiC content varied from 1 to 5 wt%. The powder mixtures were then cold compacted at 200 MPa and sintered at. 900°C for 2h. After sintering, samples were subjected to cold extrude and then characterized. The results obtained shows that relative density decreases when TiC content increased. An enhancing in tensile strength was observed at less than 2 wt% TiC, larger dose reduces tensile strength of the material. The higher TiC content, the lower electrical conductivity was recorded. Cold extrusion had improved mechanical properties and electrical conductivity of the material.