Φ16 mm Cu-3.5 Ag alloy rods were prepared by horizontal Ohno continuous casting process

and the influence of continuous casting speed on the microstructure

electrical conductivity and mechanical properties of Cu-3.5 Ag alloy were investigated systematically.The results show that the continuous casting speed has a significant effect on the microstructure and properties of Cu-3.5 Ag alloy.The microstructure perpendicular to the continuous casting direction is dominated by the staggered " woven fabric" dendritic morphology

and as the continuous casting speed increases

the dendrites are gradually refined.The microstructure parallel to the continuous casting direction is regularly arranged as the "fishbone"

and as the continuous casting speed increases

the "fishbone" dendrites are gradually increased.In addition

the non-equilibrium eutectic phase is mainly distributed in the dentrite arm spacing.As the speed of continuous casting increase

the electrical conductivity of the alloy is increased from48.082 MS/m to 50.054 MS/m

and the hardness is increased from 60.3 HBW to 69.2 HBW.In test range

when the continuous casting speed is 50 mm/min

the strength and electrical conductivity of Cu-3.5 Ag alloy are acceptable

and the overall performance is desirable.