This paper reports an experimental investigation on irregular interface morphology patterns developed in thin-film unidirectional solidification of pure succinonitrile. Solidification experiments have been conducted under various temperature gradients and interface velocities. Several irregular patterns have been observed including titled dendrites, degenerate dendrites, and seaweed. It is found that as the temperature gradient increases, steady titled dendrites may evolve into degenerate dendrites and eventually to seaweed. With the same grain orientation, the irregular patterns may transform from one form to another as the growth condition changes. Observations demonstrate that normal dendrites exhibit a higher growth rate than seaweed pattern and would overgrow them. Irregular pattern may also become strongly dynamic and different patterns may evolve into each other during growth within the same experiment. These results should shed a light into the understanding of the interface morphology development during solidification.
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ASME 2003 Heat Transfer Summer Conference
July 21–23, 2003
Las Vegas, Nevada, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-3695-9
PROCEEDINGS PAPER
Development of Irregular Interface Morphology During Unidirectional Solidification of Succinonitrile
G.-X. Wang
G.-X. Wang
University of Akron, Akron, OH
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Taiming Guo
University of Akron, Akron, OH
Hongmin Li
University of Akron, Akron, OH
G.-X. Wang
University of Akron, Akron, OH
Paper No:
HT2003-47215, pp. 135-142; 8 pages
Published Online:
December 17, 2008
Citation
Guo, T, Li, H, & Wang, G. "Development of Irregular Interface Morphology During Unidirectional Solidification of Succinonitrile." Proceedings of the ASME 2003 Heat Transfer Summer Conference. Heat Transfer: Volume 3. Las Vegas, Nevada, USA. July 21–23, 2003. pp. 135-142. ASME. https://doi.org/10.1115/HT2003-47215
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