Abstract Present work is dedicated to the investigation of grain boundary (GB) wetting phase transition on different types of grain boundaries in the Cu–Ag system. The character of GBs in the samples was determined by the electron backscattering diffraction. GB character distribution was based on the coincidence site lattice (CSL) model and on the values of the misorientation angle of GBs. Experimental results show that only the low angle GBs and the Σ3 CSL GBs do not reach complete wetting by the melt. Random high misorientation angle (HA) GBs reach complete wetting at 895 °C. Only Σ11, Σ5 and Σ13 CSL GBs have a higher wetting temperature than the HA GBs, so their GB energy should be lower than the energy of HA GBs.

中文翻译：

---

Cu-Ag体系中不同类型晶界的晶界润湿

摘要 目前的工作致力于研究 Cu-Ag 系统中不同类型晶界上的晶界 (GB) 润湿相变。样品中GBs的特征由电子背散射衍射确定。GB 字符分布基于重合位点晶格 (CSL) 模型和 GB 的错误取向角值。实验结果表明，只有低角度 GB 和 Σ3 CSL GB 没有达到完全被熔体润湿。随机高取向角 (HA) GB 在 895 °C 时达到完全润湿。只有 Σ11、Σ5 和 Σ13 CSL GB 的润湿温度高于 HA GB，因此它们的 GB 能量应低于 HA GB 的能量。