通过引入异质形核模型、枝晶生长模型、几率形核基底模型，借鉴单元自动生长机制，仿真了等轴晶、柱状晶组织形成的过程。
Based on the cellular automata technique, the heterogeneous nucleation model, dendrite growth model and random nucleation model are used to simulate the formation of equiaxed and columnar dendrite.
极大的冷却速率使得接头组织瞬间形核并快速生长，形成组织细小致密具有快速凝固特征的焊接接头。
Due to very high cooling rate, the nugget structure rapidly nucleates and grows. The refined microstructure of the nugget with rapidly solidified characteristic is formed.
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