Simulation and experimental validation of three-dimensional dendrite growth
Transactions of Nonferrous Metals Society of China, ISSN: 1003-6326, Vol: 22, Issue: 11, Page: 2756-2761
2012
- 6Citations
- 13Captures
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Metrics Details
- Citations6
- Citation Indexes6
- CrossRef2
- Captures13
- Readers13
- 13
Article Description
A three-dimensional (3-D) modified cellular automaton (MCA) method was developed for simulating the dendrite morphology of cubic system alloys. Two-dimensional (2-D) equations of growth velocities of the dendrite tip, interface curvature and anisotropy of the surface energy were extended to 3-D system in the model. Therefore, the model was able to describe the morphology evolution of 3-D dendrites. Then, the model was applied to simulate the mechanism of spacing adjustment for 3-D columnar dendrite growth, and the competitive growth of columnar dendrites with different preferred growth orientations under constant temperature gradient and pulling velocity. Directional solidification experiments of NH 4 Cl-H 2 O transparent alloy were performed. It was found that the simulated results compared well with the experimental results. Therefore, the model was reliable for simulating the 3-D dendrite growth of cubic system alloys.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S100363261161529X; http://dx.doi.org/10.1016/s1003-6326(11)61529-x; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84870876046&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S100363261161529X; http://linkinghub.elsevier.com/retrieve/pii/S100363261161529X; http://api.elsevier.com/content/article/PII:S100363261161529X?httpAccept=text/xml; http://api.elsevier.com/content/article/PII:S100363261161529X?httpAccept=text/plain; http://dx.doi.org/10.1016/s1003-6326%2811%2961529-x; https://dx.doi.org/10.1016/s1003-6326%2811%2961529-x; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=4727560&internal_id=4727560&from=elsevier
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