Self-propagating combustion preheating and explosive consolidation of Mo/Cu functionally gradient material

Mo/Cu functionally gradient material (FGM) was prepared by self-propagating combustion preheating and bidirectional explosive consolidation with buffer action of water. The density, hardness and electric conductivity of each layer were measured: the relative density increased, the hardness decreased and the electric conductivity increased with the increase of Cu content in Mo/Cu FGM. The microstructure of Mo/Cu FGM was observed by SEM. The relative density of each layer in Mo/Cu FGM increased from 94.2% of Mo layer to 98.4% of Cu layer. The relative density of integral Mo/Cu FGM attained 95.5%. The shearing strength between the first layer and the second layer of the Mo/Cu FGM was 214.8 MPa. The thermal conductivities of third layer and fourth layer were 204.76 W·m^-1·K^-1 and 249.71 W·m^-1·K^-1, respectively.