Structure and mechanical properties of aging Al-Li-Cu-Zr-Sc-Ag alloy after severe plastic deformation by high-pressure torsion
LI Kaigorodova, DY Rasposienko, VG Pushin… - The Physics of Metals …, 2015 - Springer
LI Kaigorodova, DY Rasposienko, VG Pushin, VP Pilyugin, SV Smirnov
The Physics of Metals and Metallography, 2015•SpringerThe structural and phase transformations have been studied in aging commercial aluminum-
lithium alloy Al-1.2 Li-3.2 Cu-0.09 Zr-0.11 Sc-0.4 Ag-0.3 Mg in the as-delivered state and
after severe plastic deformation by torsion for 1, 5 and 10 revolutions under a high pressure
of 4 GPa. Deformation-induced nanofragmentation and dynamic recrystallization have been
found to occur in the alloy. The degree of recrystallization increases with deformation.
Nanofragmentation and recrystallization processes are accompanied by the deformation …
lithium alloy Al-1.2 Li-3.2 Cu-0.09 Zr-0.11 Sc-0.4 Ag-0.3 Mg in the as-delivered state and
after severe plastic deformation by torsion for 1, 5 and 10 revolutions under a high pressure
of 4 GPa. Deformation-induced nanofragmentation and dynamic recrystallization have been
found to occur in the alloy. The degree of recrystallization increases with deformation.
Nanofragmentation and recrystallization processes are accompanied by the deformation …
Abstract
The structural and phase transformations have been studied in aging commercial aluminum-lithium alloy Al-1.2 Li-3.2 Cu-0.09 Zr-0.11 Sc-0.4 Ag-0.3 Mg in the as-delivered state and after severe plastic deformation by torsion for 1, 5 and 10 revolutions under a high pressure of 4 GPa. Deformation-induced nanofragmentation and dynamic recrystallization have been found to occur in the alloy. The degree of recrystallization increases with deformation. Nanofragmentation and recrystallization processes are accompanied by the deformation-induced decomposition of solid solution and changes in both the nucleation mechanism of precipitation and the phase composition of the alloy. The influence of a nanostructured nanophase state of the alloy on its mechanical properties (microhardness, plasticity, elastic modulus, and stiffness) is discussed.
Springer
