中国物理B ›› 2014, Vol. 23 ›› Issue (3): 38104-038104.doi: 10.1088/1674-1056/23/3/038104
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
邢辉a b, 王建元a b, 陈长乐a b, 金克新a b, 杜立飞b
Xing Hui (邢辉)a b, Wang Jian-Yuan (王建元)a b, Chen Chang-Le (陈长乐)a b, Jin Ke-Xin (金克新)a b, Du Li-Fei (杜立飞)b
摘要: In this paper, the morphological transition from dendrite to symmetry-broken dendrite is investigated in the directional solidification of non-axially-oriented crystals using a quantitative phase-field model. The effects of pulling velocity and crystal orientation on the morphological transition are investigated. The results indicate the orientation dependence of the symmetry-broken double dendrites. A dendrite to symmetry-broken dendrite transition is found by varying the pulling velocity at different crystal orientations and the symmetry-broken multiple dendrites emerge as a transition state for the symmetry-broken double dendrites. The state region during the transition can be well characterized through the variations of the characteristic angle and the average primary dendritic spacing.
中图分类号: (Solidification)