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

Figure 5

LAWATAP analysis with new experimental parameters 25 K and 22.5% of pulse fraction. (a) Reconstructed volume, obtained with laser assisted wide angle tomographic atom probe, shows and platelets. (b) Corresponding proxigram composition profile for gives an optimistic chemical composition as () at.% Cu, () at.% Li, and () at.% Mg. (c) Corresponding combined proxigram composition profile for with the chemical composition of () at.% Cu, () at.% Li, () at.% Mg, and () at.% Ag.

(a)

(b)

(c)