240879.fig.003a
(a)
240879.fig.003b
(b)
240879.fig.003c
(c)
240879.fig.003d
(d)
Figure 3: TEM images of 2219 aluminum alloy intracrystalline precipitations aged at 175°C. (a), (c) conventional aged for 12 h, 18 h; (b), (d) LEDPC added aged for 12 h, 18 h.