论文标题
拥抱混乱：合金增添了双胚胎生长的随机性
Embracing the chaos: Alloying adds stochasticity to twin embryo growth
论文作者
论文摘要
高通量原子模拟揭示了溶质原子对MG-AL合金中双变体选择的独特作用。当胚胎选择要采用的双胞胎变体时，双胚胎首先会经历随机孵育阶段，然后在胚胎扩展而不改变所选的双胞胎变体的情况下确定性生长阶段。 Al组成的增加促进了由于成核和界面断开连接的固定而在原子水平上的随机孵育行为。在高于临界值的组合物中，断开固定会导致多个双胞胎变体选择。
High-throughput atomistic simulations reveal the unique effect of solute atoms on twin variant selection in Mg-Al alloys. Twin embryos first undergo a stochastic incubation stage when embryos choose which twin variant to adopt, and then a deterministic growth stage when embryos expand without changing the selected twin variant. An increase in Al composition promotes the stochastic incubation behavior on the atomic level due to nucleation and pinning of interfacial disconnections. At compositions above a critical value, disconnection pinning results in multiple twin variant selection.
