737546.fig.004a
(a)
737546.fig.004b
(b)
737546.fig.004c
(c)
737546.fig.004d
(d)
Figure 4: (a) HRTEM micrograph of the alloy with 0.59% Mg showing θ nanocrystallites; (b) FFT of the image; (c) frequencies corresponding to θ to produce the IFFT image and (d) IFFT image isolating the θ nanoparticles.