摘要
定量研究了相场模型中过冷度、温度对相场的耦合系数、各向异性系数等参数对晶粒形貌的影响,讨论了不同枝晶形貌 和海藻状形貌的产生和转化.研究了生长速度与晶粒形貌及相场参数的联系,分析了枝晶生长尖端的分叉及边枝的产生原理.
The connection between the grain morphologies and some parameters in phase-field model has been studied, which include undercooling, the coupling coefficient between the temperature field and the phase field, the anisotropic coefficient and so on. The formation and transformation between the dendrite morphology and seaweed morphology are discussed. Besides, the relations between the tip growth speed and the grain morphologies, the parameters are studied, the theory of the dendrite tip branching-off and the theory of side-branching are analyzed.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第8期813-816,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金资助项目 50005011
关键词
相场
枝晶
边枝
微观组织模拟
phase-field
dendrite
side branche
microstructure modeling
