Mechanical behaviour of heavily deformed CuAgZr conductor materials

The mechanical properties of Cu-7m.% Ag-0.05m.% Zr-alloys have been improved ultimate tensile strength of more than 1.1 GPa, a yield strength of about 1 GPa, a plastic strain of 0.7%, and a conductivity of 60 %IACS ( at room temperature). The yield strength of a cold deformed Cu - 7m.% Ag - 0.05m.% Zr-alloy has been assessed on the basis of different hardening mechanisms: solid solution, grain boundary, precipitation and dislocation hardening. The critical shear stress which is determined from the experimentally observed critical shear strength by Schmid's law is between a linear and a quadratic superposition of its individual contributions and hence is in good agreement with the theoretical prediction. by optimised thermo-mechanical treatments. After processing the conductor material shows an