Fabrication of Mo-Cu composites by a diffusion-rolling procedure

A plastic deformation approach to Mo matrix composites remains a longstanding challenge in the processing of refractory metal. Toward this objective, we explored a selective fabrication of the diffusion-rolling procedure. With diffusion bonding initially, a primary sandwich sheet was achieved. The interfacial strength of Mo/Cu was enhanced by the plastic deformation after rolling. Ultrathin Cu-Mo-Cu sheet and Mo-Cu alloy sheet with Cu matrix containing distributed uniformly fibrous Mo were fabricated. FIR-TEM analysis revealed that atomic-level interdiffusion of Mo and Cu was present at the interface. Therefore, it is concluded that the diffusion-rolling procedure can be potentially employed as a joining method for the fabrication of Mo-Cu composites. (C) 2013 Elsevier Ltd. All rights reserved.