Figure 4
Oriented selected-area electron diffraction pattern recorded from a thin-foil sample of aluminium alloy AlZn5Mg in a 200 kV FEI Tecnai F20. The uncalibrated diffraction pattern was analyzed in the same manner as the diffraction pattern shown in Fig. 3. The determined distances of the reflections from the center are 203 pixels (A), 240 pixels (B) and 237 pixels (C), which yields the ratios
rB/rA = 1.18 and
rC/rA = 1.17. The measured angles are ∠A–B = 64.5° and ∠A–C = 65.9°. |