Author:
Markushev M V,Krymskiy S V,Avtokratova E V,Sitdikov O Sh
Abstract
Abstract
Structural and mechanical behaviors of the 2024 commercial aluminum alloy, differed by heterogeneity of the initial structure, were examined after severe plastic deformation and further annealing. The superior strengthening of the pre-quenched alloy under high-pressure torsion (HPT) at room temperature was caused by the development of a more equiaxed nanostructure of the matrix with a lower fragment size than in pre-aged T6 condition. Post-HPT annealing at 100 °C led to extra strengthening of the pre-quenched alloy only due to the age hardening effect. The nature of the alloy behavior is discussed.