Analysis of the structure and the mechanical properties of textured strip substrates made of binary copper alloys after aging

The structure of the textured strip substrates made of binary Cu–Fe and Cu–Cr alloys and subjected to additional annealing in the temperature range 400–600$^\circ$C is studied by electron microscopy. The dependence of the microhardness on the temperature of aging of textured strips made of Cu–-6 at% Fe and Cu–0.4 at% Cr alloys is analyzed. The maximum strength is found to be reached in these textured strips after aging at 500$^\circ$C. The obtained results can be used to recommend the temperature conditions of deposition of buffer and supercooling layers in the 2G HTSC technology onto strip substrates made of these alloys.