Abstract
In this paper we report a microstructure and strength properties investigations of a Cu-10 mass. % Zn alloy subjected to ECAP, with the aim of forming a UFG structure and enhancing the strength properties. The obtained results for this alloy having an average SFE value (35 mJ⋅m-2) are compared with the results obtained for pure UFG copper with a high SFE value equaled to 78 mJ⋅m-2. It is shown that the decrease in SFE value leads to more developed microstructure refinement, an increase in the density of dislocations and twins, which, in turn, provides an increase in strength characteristics.
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