▎ 摘　　要

In this study, copper/few-layered graphene (Cu/FLG) composite powder is prepared using two different approaches, chemical synthesis and mechanical milling, and the effect of the processing routes on the mechanical and thermal behaviors of hot-pressed pallets is examined. With both processing routes, the strength of the matrix is increased similar to 3.90 and similar to 2.82 times by grain refinement, and is further increased 1.14 times by incorporating 0.5vol.% FLG. In addition, for both processing routes, the coefficient of thermal expansion is reduced from similar to 17.07 to similar to 15.15 (ppm/K) by incorporating 0.5 vol.% of FLG in both composites. Considering its cost-effectiveness, simplicity, and potential for mass-production, the mechanical process demonstrates the ability to produce Cu/FLG composites with a high mechanical and thermal performance that is comparable to solution-based chemical synthesis routes. (c) 2018 Elsevier B.V. All rights reserved.