Abstract
Work-hardening of α-phase Cu-Al solid solutions of Al concentration up to 14 at% was studied for temperatures 4·2 to 300 K. A substantially non-monotonous concentration dependence has been established for a number of work hardening parameters, that tends to increase at lower temperatures, and correlation has been found between temperature dependences of the yield stress and activation volume. The change in the density of mobile dislocations during strain rate cycling has been estimated and found to increase with temperature reduction.
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