排序方式: 共有1条查询结果,搜索用时 0 毫秒
1
1.
Anisotropic growth of multigrain in equiaxial solidification simulated with the phase field method 下载免费PDF全文
The phase field method has been mainly used to simulate the growth of a
single crystal in the past. But polycrystalline materials predominate in
engineering. In this work, a phase field model for multigrain solidification
is developed, which takes into account the random crystallographic
orientations of crystallites and preserves the rotational invariance of the
free energy. The morphological evolution of equiaxial multigrain
solidification is predicted and the effect of composition on transformation
kinetics is studied. The numerical results indicate that due
to the soft impingement of grains the Avrami exponent varies with the
initial melt composition and the solidification fraction. 相似文献
1