Abstract
Abstract Succinonitrile (SCN)–7.5 wt.% carbon tetrabromide (CTB) alloy was unidirectionally solidified with a constant growth rate ( V = 33 μm/s) at five different temperature gradients ( G = 4.1–7.6 K/mm) and with a constant temperature gradient ( G = 7.6 K/mm) at five different growth rates ( V = 7.2–116.7 μm/s). The primary dendrite arm spacings, secondary dendrite arm spacings, dendrite tip radius and mushy zone depths were measured. Theoretical models for the microstructure parameters have been compared with the experimental observations, and a comparison of our results with the current theoretical models and previous experimental results have also been made.
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