焊管2011，Vol.34Issue(12)：17-21,5.
焊接熔池凝固组织中等轴晶生长的模拟
The Simulation of Equiaxial Crystal Growth in Welding Pool Solidification Structure
张敏 1张喜兵 1吕金波 1席敏敏1
作者信息
- 1. 西安理工大学材料科学与工程学院,西安710048
- 折叠
摘要
Abstract
Considering component super-cooling, curvature super-cooling and the anisotropy of interfacial energy based on solute diffusion and interfacial energy theory, it adopted cellular automaton method to simulate equiaxial crystal growth during the solidification course in welding pool. In simulation, the solute transmission was calculated in liquid phase, at the same time, the effect of the solid fraction evolution on the solute transmission was considered . The effect of dendrite morphology and composition segregation at ideal state, different super-cooling degree and the applied disturbance were discussed . The simulation results reproduced dendrite growth, interfacial disturbance and the competition evolution of branch. All these are consistent with the theory .关键词
元胞自动机法/枝晶分枝/过冷度/界面扰动Key words
cellular automata/dendrite branches/supercooling degree/interfacial disturbance分类
矿业与冶金引用本文复制引用
张敏,张喜兵,吕金波,席敏敏..焊接熔池凝固组织中等轴晶生长的模拟[J].焊管,2011,34(12):17-21,5.
