Cu

99

Zr

0.5

Al

0.5

alloy rods with a diameter of 20 mm was prepared by copper mold casting method

and effects of aging time and temperature on electrical conductivity and mechanical properties of Cu

99

Zr

0.5

Al

0.5

alloy were investigated

meanwhile

as-cast and cold-rolled microstructure of the alloy were observed.The results reveal that the Cu

99

Zr

0.5

Al

0.5

alloy is composed of fine

equiaxed grains and a few eutectic phases near the grain boundary.The grains are stretched and changed into banded structure after cold rolling.The Vickers hardness is increased firstly and then decreased with the increase of the aging time

while the electrical conductivity of the alloy is increased quickly at the initial stage and then tended to be stable.The optimized properties of Cu

99

Zr

0.5

Al

0.5

alloy were obtained under 450 ℃×1haging treatment with a Vickers hardness of 172

tensile strength of 460 MPa and electrical conductivity of34.86 MS/m.