Figure 93

Fig. 93: Columnar dendritic growth of Sn crystals in an Sn-10wt%Pb alloy. Thermal gradient, (T/z)_global ~ 19 K/mm, sample translation _||z = -9.6 µm/s, 1.0 s exposure. Positive z points vertically upwards. Sample-detector distance 10 cm. (a) t₀, (b) 10 frames later, t₀ + 15 s.