Abstract:
The Cu-4Ag and Cu-20Ag alloys were prepared by continuous casting combining with cold drawing and intermediate softening treatment. The microstructure, hardness and conductivity of the alloys annealed at different temperatures (440,480,520 ℃) were studied. The results show that after annealing, the rich-silver phase had fine-particle-like shapes fine and continuous network structures on the cross section of the Cu-4Ag and Cu-20Ag alloys, respectively. On the longitudinal section of the alloys, the rich-silver phase was fibrous. The Cu-20Ag alloy had more rich-silver phase, higher hardness and lower conductivity compared with Cu-4Ag alloy. The hardness of the two alloys decreased and the conductivity increased with increasing annealing temperature. The conductivity and hardness of the two alloys were the closest after annealing at 480 ℃. The conductivity and hardness of the Cu-20Ag alloy got the best match when annealed at 480 ℃.
下载: