Abstract The effect of annealing after straining in tension or rolling on the ductility and mode of failure of internally oxidized CuAgAl alloys has been investigated. It is shown that annealing after light to moderate amount of deformation causes a weakening of the grain boundaries and leads to intergranular failure of these alloys. Annealing after straining above a critical value improves the strength and ductility. This behaviour is believed to be caused by the annealing treatment through a recovery mechanism in which the concentrated strain energy near the oxide particles at the grain boundaries is relieved by separation of the particle - matrix interface. The critical value of strain required to avoid intergranular failure depends on the thermal and mechanical stability of the dislocation structure.
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