Characterization of Precipitation in Al-Li Alloy AA2195 by means of Atom Probe Tomography and Transmission Electron Microscopy

Figure 4

LAWATAP analysis for the specimen with rolling texture with the same experimental parameters as in Figure 3. (a) Reconstructed volume showing three out of four orientations of the precipitate on the matrix planes. (b) Magnified view of the platelet with resolved planes reveals the distribution of Mg within the platelet. (c) Corresponding proxigram composition profile for the platelet on the plane gives the chemical composition as () at.% Cu, () at.% Li, () at.% Mg, and () at.% Ag.

(a)

(b)

(c)