Mechanical Properties and Electrical Conductivity of Heavily Cold-Rolled Cu100−xZrx Alloys (x=0–8)

The mechanical properties and electrical conductivity of Cu 1 0 0 - x Zr x (x = 0-8 at%) alloys were examined, whereby the alloys were prepared by casting levitation-melted alloys into a pure copper die and then subsequently cold rolled to a thickness of 200 μm except for the alloys where x = 7 and 8. The ultimate tensile strength (ρ U T S ), 0.2% proof strength (ρ 0 . 2 ) and Vickers hardness (H V ) of the prepared Cu 1 0 0 - x Zr x alloys increase linearly with x, elongation e P is almost independent of x and the electric conductivity (%IACS) decreases when the Zr concentration x increases. The highest values of ρ U T S , ρ 0 . 2 , By and H V for the Cu 1 0 0 - x Zr x alloys are 1200 MPa, 800 MPa, 3% and 290, respectively, at x = 6 and its electrical conductivity is 35%IACS.