Numerical simulation of dendrite growth during solidification

Yao, X. and Wang, H. and He, B. and Zhou, X. (2006) Numerical simulation of dendrite growth during solidification. International Journal of Nonlinear Sciences and Numerical Simulation, 7 (2). pp. 171-176. ISSN 1565-1339

Official URL: http://www.ijnsns.com/

Abstract

A comprehensive probabilistic model for simulating dendrite morphology and investigating dendritic growth kinetics during solidification has been developed, based on a modified Cellular Automaton (mCA) for microscopic modeling of nucleation, growth of crystals and solute diffusion. The mCA model numerically calculated solute redistribution both in the solid and liquid phases, the curvature of dendrite tips and the growth anisotropy. This modeling takes account of thermal, curvature and solute diffusion effects. Therefore, it can simulate microstructure formation both on the scale of grain size and dendrite tip length. This model was then applied for simulating dendritic solidification of an Al-7%Si alloy. Both directional and equiaxed dendritic growth has been performed to investigate the effect of growth anisotropy and cooling rate on dendrite morphology. Furthermore, competitive growth and selection of the dendritic crystals have also been investigated.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: No
Item Status: Live Archive
Additional Information: Permanent restricted access to paper due to publisher copyright restrictions.
Depositing User: Dr Hao Wang
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 11 Oct 2007 01:19
Last Modified: 02 Jul 2013 22:49
Uncontrolled Keywords: cellular automaton (CA), dendrite, solidification, crystal, crystallographic, morphology
Fields of Research (FOR2008): 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
04 Earth Sciences > 0403 Geology > 040306 Mineralogy and Crystallography
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
URI: http://eprints.usq.edu.au/id/eprint/3055

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