Abstract
Directional solidification studies were carried out in the succinonitrile-acetone and pivalic acid-ethanol systems in order to study the variation in average cellular spacing with velocity. Three distinct behaviors were observed under steady-state growth conditions. For velocities near the critical velocity for planar interface instability, cellular spacing decreased with an increase in velocity. However, at velocities near the cell-dendrite transition the cell spacing increased sharply. Beyond this transition region, the cell or dendrite spacing decreased with further increases in velocity. These experimental observations have been explained by using the current theoretical models of cell-dendrite growth. In addition, a finite band of velocities was identified in which both cellular and dendritic structures were found to be stable. A hysteresis effect was observed in the cell-dendrite transition indicating that the cell-dendrite bifurcation is subcritical.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
