Figure 5: The reconstructed volume of the sample in the T4 condition analyzed using LAWATAP.
(a) Exploration of the distribution of the β' precipitates in an Al matrix with an average diameter of (10 ± 2) nm, and high Zr concentration in its core.
(b) A proxigram composition profile from the isoconcentration surface of 5 at.% Zr gives the chemical composition of the β' phase as (23± 2) at.% Zr, (1.8 ± 0.5) at.% Li, (1.6 ± 0.4) at.% Cu (0.25 ± 0.1) at.% Mg and (0.4 ± 0.2) at.% Ag with an Al / Zr ratio close to 3:1.
(c) The top view of the reconstructed volume displays separately the alloying elements: Zr, Li, Cu, Mg and Ag. The figure indicates the segregation behavior of solute atoms at the β'/ matrix interface.
(a) Exploration of the distribution of the β' precipitates in an Al matrix with an average diameter of (10 ± 2) nm, and high Zr concentration in its core.
(b) A proxigram composition profile from the isoconcentration surface of 5 at.% Zr gives the chemical composition of the β' phase as (23± 2) at.% Zr, (1.8 ± 0.5) at.% Li, (1.6 ± 0.4) at.% Cu (0.25 ± 0.1) at.% Mg and (0.4 ± 0.2) at.% Ag with an Al / Zr ratio close to 3:1.
(c) The top view of the reconstructed volume displays separately the alloying elements: Zr, Li, Cu, Mg and Ag. The figure indicates the segregation behavior of solute atoms at the β'/ matrix interface.
