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Figure 3
First three-dimensional in situ dendrite evolution in Al-20 wt% Cu captured using the laser-heated furnace and the ultra-fast data acquisition at TOMCAT. The Al-rich dendrites are shown in (a, b, d, e) while the liquid is transparent. The total evolution time from (a) to (e) is approximately 200 s. (c) and (f) show smaller portions of the solid–liquid interface of (a) and (d), respectively, coloured by the velocity of the moving interface (in µm s−1). The velocity was calculated from two experimental microstructures and then displayed back on the original microstructures.

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