Article ID Journal Published Year Pages File Type
1639963 Transactions of Nonferrous Metals Society of China 2008 6 Pages PDF
Abstract
The anisotropy problem of 3D phase-field model was studied, and various degrees of anisotropy were simulated by numerical calculation method. The results show that with the change of interface anisotropy coefficients, from smooth transition to the appearance of angle, equilibrium crystals shape morphology has a critical value, and 3D critical value is 0.3. The growth of dendrites is stable and the interface is smooth when it is less than critical value; the interface is unstable, rolling edge appears and the growth is discontinuous when it is more than critical value. With the increase of anisotropy coefficients, the dendrites grow faster under the same condition.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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