Fig. 6: intragranular nanoscale compositional mapping in sample B.
APT data for the grain centre of the reference sample B. a 3D reconstruction showing the geometrical distribution of the 1:5 phase (blue, isoconcentration value 12 at.% Cu) and the Z-phase (green, isoconcentration value 6 at.% Zr). Blue and green dashed lined boxes indicate a representative Cu-2D distribution for the 1:5 phase-plates (b) and a rotated 3D reconstruction of the Z-platelets (d), respectively. 1D composition profiles are measured perpendicular to the representative 1:5 phase-plates (c) and the Z-platelets (e) as indicated by the orange arrows and crossed circles in (a, b, d). The nanoscale cellular lamellar microstructure in the grain centre of the sample B highly resembles that in the high Hc area in the A sample.
