非对称Cu倾斜晶界Ag偏聚诱导纳米小面化的小面图
Faceting diagram for Ag segregation induced nanofaceting at an asymmetric Cu tilt grain boundary
摘要：
在这项工作中，我们实验建立了等温纳米晶面的演变在一个不对称的倾斜晶界的Cu-Ag系统使用扩散偶的方法。我们调查的纳米晶面形成沿晶界的银溶质过剩浓度的依赖。初始晶界分解为不对称的贫Ag段和对称的富Ag（210）段。增加Ag过量导致富Ag小面段长度增加，而非对称小面的长度保持恒定。由此，我们构建了一个晶界纳米刻面图推导出我们的实验相关的局部原子结构，整体倾斜和Ag溶质过剩。
英文摘要：
In this work, we experimentally establish the isothermal nanofacet evolution at an asymmetric tilt grain boundary in the Cu-Ag system using a diffusion couple approach. We investigate the nanofacet formation along the grain boundary in dependence of the Ag solute excess concentration. The initial grain boundary dissociates into asymmetric Ag-lean segments and Ag-rich symmetric (210) segments. Increasing Ag excess leads to an increase in Ag-rich facet segment length, while the length of the asymmetric facets remains constant. From this, we construct a grain boundary nanofaceting diagram deduced from our experiments relating local atomic structure, overall inclination and Ag solute excess.
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