Abstract.

Dendrites represent the complicated pattern formation in condensed matter physics and microstructures in materials science. Previous work shows that a dendrite can change its orientation due to a change in the anisotropy of solid-liquid interfacial energy. The anisotropy change is often assumed by the increase in the nominal composition. Here, we consider the case where the interfacial anisotropy changes with local composition at the interface rather than the nominal composition and examine its effect on dendritic growth morphology using phase-field simulations. The results are then discussed with respect to 〈110〉 side-arms formation in Al-Mg alloys and physical insights are provided.

Graphical abstract

中文翻译：

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局部成分依赖性界面各向异性对树突生长取向的影响。

摘要。

树突代表了材料科学中凝聚态物理和微观结构中复杂的图案形成。先前的工作表明，由于固液界面能各向异性的改变，枝晶可以改变其取向。各向异性的变化通常被认为是名义成分的增加。在这里，我们考虑界面各向异性随界面处局部成分而不是名义成分变化的情况，并使用相场模拟研究其对树突生长形态的影响。然后讨论有关铝镁合金中〈110〉侧臂形成的结果，并提供物理见解。

图形概要