Abstract The Micro-Electrical Discharge Machining (Micro-EDM) technique has been employed to machine micro-patterns with shaped micro-slots on Ti6Al4V surfaces. Ti6Al4V substrates, with and without micro-slots, were bonded using a commercial epoxy adhesive. Optical microscopy and SEM were used to observe the micro-patterned Ti6Al4V surfaces before and after joining and to analyse the fracture surfaces after mechanical tests. The joints were mechanically characterised, with and without micro-patterns, by means of Single Lap Offset (SLO) shear tests under compression to understand the effect of differently shaped micro-slots. The effects of the shape of the micro-slots, their interlocking or overlapping, and their orientation, with respect to the applied load, are presented and discussed in terms of mechanical performance of the joints.

中文翻译：

---

通过微放电对 Ti6Al4V 进行表面加工以改善粘合连接

摘要 微放电加工（Micro-EDM）技术已被用于在 Ti6Al4V 表面上加工具有成形微槽的微图案。Ti6Al4V 基板，带和不带微槽，使用商用环氧树脂粘合剂粘合。使用光学显微镜和扫描电镜观察接合前后的微图案 Ti6Al4V 表面，并分析机械测试后的断裂表面。通过在压缩下进行单圈偏移 (SLO) 剪切测试，以了解不同形状微槽的影响，对接头进行机械表征，包括微图案和无微图案。微槽的形状、它们的互锁或重叠以及它们的方向相对于施加的载荷的影响在接头的机械性能方面进行了介绍和讨论。