Figure 92

Fig. 92: Equiaxed dendritic growth of Pb crystals in an Sn-52wt%Pb alloy. Thermal gradient, (T/z)_global ~ 29.5 K/mm, sample translation _||z = -9.6 µm/s, 1.0 s exposure. Positive z points vertically upwards. Sample-detector distance 75 cm. (a) t₀, (b) 3 frames later, t₀ + 4.5 s.