Effect of deformation processing on the properties of Cu–50% Cr composite

Abstract

The paper examines the structure, density, resistivity, and mechanical properties of Cu–50 wt.% Cr powder composite after liquid-phase sintering at 1200°C in hydrogen and subsequent deformation processing: additional cold pressing under 550–600 MPa, sintering under 8.5 MPa at 1100°C, and hot forging beginning from 850°C. It is shown that the maximum compaction of the composite (up to 99% of the theoretical density), decrease in its resistivity, and increase in strength and plasticity are reached in hot forging in a closed die mold and subsequent annealing at 600°C to relieve internal stresses.