Fe-C合金枝晶生长的三维相场模拟

康永生; 赵宇宏; 侯华; 佟乐乐; 田晋忠; 陈利文

doi:10.15980/j.tzzz.2016.12.007

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Fe-C合金枝晶生长的三维相场模拟
Three-dimensional Phase Field Simulation of Dendritic Growth in Fe-C Alloy
2016年36卷第12期页码：1262-1265
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.12.007

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[1]康永生,赵宇宏,侯华,佟乐乐,田晋忠,陈利文.Fe-C合金枝晶生长的三维相场模拟[J].特种铸造及有色合金,2016,36(12):1262-1265.

Kang Yongsheng, Zhao Yuhong, Hou Hua, et al. Three-dimensional Phase Field Simulation of Dendritic Growth in Fe-C Alloy[J]. Special Casting & Nonferrous Alloys, 2016,36(12):1262-1265.
[1]康永生,赵宇宏,侯华,佟乐乐,田晋忠,陈利文.Fe-C合金枝晶生长的三维相场模拟[J].特种铸造及有色合金,2016,36(12):1262-1265. DOI： 10.15980/j.tzzz.2016.12.007.

Kang Yongsheng, Zhao Yuhong, Hou Hua, et al. Three-dimensional Phase Field Simulation of Dendritic Growth in Fe-C Alloy[J]. Special Casting & Nonferrous Alloys, 2016,36(12):1262-1265. DOI： 10.15980/j.tzzz.2016.12.007.

摘要

相场法由于避免了追踪固液界面而在立方晶体材料研究中广泛应用。模拟采用三维自适应网格划分方法

加速计算进程、通过反复模拟以获得收敛性结果的方法

确定并消除网格各向异性。首先

研究了界面能各向异性参数对Fe-C合金枝晶取向的影响

通过枝晶取向及形貌的对比

选择合适的界面能各向异性参数。随后

定量研究了成分过冷对枝晶尖端半径、尖端生长速度、临界稳定系数等枝晶尖端参数的影响。

Abstract

Phase-field simulation in cubic symmetry materials has been applied widely to understand dendritic growth and morphology due to a strong advantage in convenience to tracking the solid-liquid interface.The three-dimensional adaptive grid was adopted in phase-field model to accelerate the process.Through repeating simulation to obtain convergence

the grid anisotropy was eliminated.At first

effects of anisotropy parameters of interface energy on dendrite orientation in Fe-C alloy were analyzed.Through comparing dendrite orientation and growth morphology

the optimized anisotropy parameters of interface energy were presented.At last

effects of super-cooling on the parameters

such as dendritic tip radius

tip growth velocity

critical stability coefficient

were described quantitatively.