Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1639963 | Transactions of Nonferrous Metals Society of China | 2008 | 6 Pages |
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
Authors
Hua HOU, Yu-hui ZHAO, Xiao-feng NIU,