针对hcp晶系的镁合金, 建立了其二维枝晶生长的相场模型. 根据该模型编写模拟程序, 得到了具有六重对称性的晶粒形貌, 并根据模拟结果分析了温度场对其枝晶臂形成的影响; 根据该模型耦合热扰动进行镁合金微观组织模拟, 从计算结果中观察到了枝晶臂相互竞争、改变优先生长方向、颈缩、熔断、融合等现象; 计算得到的枝晶形貌与实验结果较为吻合. 同时还研究了参数的选取对镁合金枝晶发育的影响.
Due to Magnesium alloys with hcp crystal structure, we established the phase field model of dendritic growth in two dimensions. Using the model coupled with heat noise, we simulated the process of dendritic growth of Magnesium alloys. From simulation results, some phenomena of dendritic growth were found, such as necking and competitive growth, and there is a high consistency of dendritic morphologies between simulation and experiment. Meanwhile, we analyzed the influence of parameters on dendritic morphology.
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| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] |
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