The graph above is a typical secondary dendrite arm spacings at the distances of 5
The graph above is a typical secondary dendrite arm spacings at the distances of 5.5 cm and 12.5 cm from the chill end. It presents the measured secondary dendrite arm spacings. This figure indicate that the closer to the chill surface, the finer the secondary dendrite are in comparison to the distant locations. The variation in the secondary dendrite arm spacing along the length of the rods using the DWDS process is smaller than using the Bridgman process. In addition, the secondary dendrites solidified by using the DWDS process are significantly more refined when compared to Bridgman process in those locations.