A high strength and high electrical conductivity CuCrZr alloy prepared by aging and subsequent cryorolling

In the present study, high strength and high electrical conductivity Cu-0.65Cr-0.07Zr (wt.%) was prepared by aging and subsequent cryorolling. The influence of processing on microstructure and properties of alloy were investigated. After aging, the fine and uniformly dispersed nano-precipitates appeared in the matrix. The cry-orolled sample was characterized by a finer microstructure than the sample rolled at room temperature. The desired balance between the tensile strength of 712 MPa and electrical conductivity of 70.2% was obtained in the sample aged and cryorolled for 90% reduction. The combination of aging and subsequent cryorolling is effective in optimizing mechanical strength and electrical conductivity of CuCrZr alloy due to grain refinement, precip-itation and twinning.

Automated summary

The combination of aging and subsequent cryorolling proved to be effective in optimizing mechanical strength and electrical conductivity of CuCrZr alloy by refining grain structure, precipitation, and twinning. A desirable balance between a tensile strength of 712 MPa and electrical conductivity of 70.2% was achieved in the sample aged and cryorolled for a 90% reduction.