Effect of solute concentration on the serrated flow in solution-treated Al--4%Cu alloys

In order to compare with annealed Al--4%Cu alloys, the influence of solute concentrationon the serrated flow is investigated by solution treatment. In this paper,some dynamic parameters, such as critical time and the ultimate tensilestrength are obtained. Moreover, the change of the strain rate range forserrated flow in Al--4%Cu alloys prepared by annealing and quenchingheat treatments is reported too. The difference between them is attributedto the increasing solute concentration in the bulk of the solution treatedmaterials.