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Published in:
29-01-2020 | Communication
Effect of Cu and Li Contents on the Serrated Flow Behavior of Al-Cu-Li Based Alloys
Published in: Metallurgical and Materials Transactions A | Issue 4/2020
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Abstract
The serrated flow behavior of Al-Li, Al-Cu and Al-Cu-Li alloys was studied in solution-treated condition under a range of strain rates at ambient temperature. The serration behavior and the decrease in stress (i.e., the stress drop) in serrated flow curves are found to be dependent on both the magnitude of the strain rate and the nature and amounts of alloying elements present in these alloys. The underlying mechanisms behind the occurrence of serrations in these alloys are understood to be due to the interaction of solutes, both Cu and Li, with the dislocations.