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Investigates the mechanical and electrical properties of copper-graphene composites, indicating improved performance through direct consolidation methods.
The popularity of copper‐graphene composites is ever‐increasing, primarily given by their favorable electric conductivity and advantageous mechanical properties. According to the Hall‐Petch law, the finer are the grains within the material, the higher is the strengthening effect. Therefore, modern (ultra) fine grained composites with homogeneous distributions of reinforcing elements can advantageously be prepared by a direct consolidation of fine powder mixtures. This study investigates the behavior of copper‐graphene composites directly consolidated using the industrially applicable intensive plastic deformation method of rotary swaging. Carried out under optimized conditions, rotary swaging ensured high quality of consolidation of the prepared powders and provided microstructures with rather homogeneous distributions of graphene particles within the copper matrix. However, this factor was also influenced by the volume fraction of graphene within the mixture. The results showed that the swaging ratio of 1.8 resulted in a satisfactory consolidation of the powder mixtures, the directly consolidated composites featured favorable combinations of mechanical and electric properties.
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Kunčická et al. (2026) studied this question.
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