论文标题
合金诱导方向依赖的迁移率，并改变了晶粒边界的迁移机制
Alloying induces directionally-dependent mobility and alters migration mechanisms of faceted grain boundaries
论文作者
论文摘要
面晶界表现出异常的隔离和迁移趋势。为了更深入地了解溶质原子在迁移过程中如何与尺度的界面结构相互作用，本研究探究了含有Ag原子的cu中的facet $σ$ 11边界的迁移行为。发现溶质以更多的自由体积隔离到方面，并在一个迁移方向上强烈降低边界速度，而不是另一个迁移的速度，这是由于存在方向依赖的运动机制，该机制可以逃脱溶质固定，从而加快了迁移的速度。因此，这些模拟发现了一种化学诱导的各向异性的新机制。
Faceted grain boundaries exhibit unusual segregation and migration tendencies. To gain a deeper understanding of how solute atoms interact with faceted interfacial structures during migration, this study probes the migration behavior of a faceted $Σ$11 boundary in Cu doped with Ag atoms. The solutes are found to segregate to the facet with more free volume and strongly reduce boundary velocity in one migration direction, but not the other, due to the presence of a directionally-dependent motion mechanism that can escape solute pinning and therefore speed up migration. Hence, a new mechanism of chemically-induced anisotropy in grain boundary mobility is uncovered by these simulations.
