Abstract In this research, the effects of high speed milling on the main surface integrity characteristics, including surface roughness and topography, microhardness, white layer thickness, and surface chemical composition of Ti-6Al-4V were empirically studied. Totally, 18 experiments were carried out using a full factorial design of experiments method in the presence of minimum quantity lubricant. The results showed that by using high speed milling, it is possible to reach the surfaces with a higher quality and surface roughness of approximately 0.2 μm. Also, it was discovered that the microhardness variation with cutting speed has a dual nature. The maximum microhardness was obtained at the cutting speed of 375 m/min and the feed rate of 0.08 mm/tooth, which showed a 57% increase compared with the bulk material. In addition, by using the cutting speed of 450 m/min, the depth of heat-affected layer and work hardening effects declined up to 75% in comparison with the cutting speed of 300 m/min.

中文翻译：

---

微量润滑高速铣削Ti-6Al-4V的粗糙度、形貌、显微硬度、白层和表面化学成分研究

摘要 本研究对高速铣削对Ti-6Al-4V主要表面完整性特征的影响进行了实证研究，包括表面粗糙度和形貌、显微硬度、白层厚度和表面化学成分。在最少量的润滑剂存在下，使用全因子设计实验方法总共进行了 18 个实验。结果表明，通过使用高速铣削，可以达到更高质量的表面，表面粗糙度约为 0.2 μm。此外，还发现显微硬度随切削速度的变化具有双重性质。在切削速度为 375 m/min 和进给速度为 0.08 mm/齿时获得最大显微硬度，与块状材料相比增加了 57%。此外，