During dry machining of titanium alloys, severe friction exists at the tool-chip interface, which causes excessive heat generation and tool wear. To limit the tool-chip interface friction and to change tribological characteristics, texturing of the tool rake surface is one of the feasible solutions. In this study, innovative dual texture geometries consisting of grooves in the sticking and dimples in the sliding regions over the tool-chip contact area were fabricated. The other combinations included grooves or dimples spread over the entire tool-chip interface and the non-textured tools. Turning experiments showed that the dual textured tools reduced cutting and thrust forces by 31.2% and 16.2%, respectively, over non-textured tools. Surface morphology and elemental dispersive spectroscopy of dual textured tools rake surface had lower workpiece adhesion and less built-up-edge formation due to wear debris entrapment inside the textures. Dual textured tools produced almost continuous chips with very thin segmentation at low feeds compared with non-textured tools which produced highly segmented chips. The analytical model captured the effect of textures on the tool surface in the same way as the reduced contact area tools, and it was in good agreement with corresponding experimental cutting forces.

在钛合金的干式加工过程中，刀具-切屑界面处存在严重的摩擦，这会导致过多的热量产生和刀具磨损。为了限制工具-芯片界面的摩擦并改变摩擦学特性，工具前刀表面的纹理化是可行的解决方案之一。在这项研究中，制造了创新的双重纹理几何形状，该几何形状由粘着槽和工具-芯片接触区域上的滑动区域中的凹坑组成。其他组合包括遍布整个工具-芯片界面和非纹理化工具的凹槽或凹痕。车削实验表明，与非纹理工具相比，双重纹理工具分别将切削力和推力降低了31.2％和16.2％。双纹理刀具前刀表面的表面形态和元素色散光谱具有较低的工件附着力，并且由于磨损碎屑夹带在纹理内而减少了堆积边缘的形成。与无纹理的工具产生高切屑的切屑相比，双重纹理的工具以低进给量产生几乎连续的切屑，且切屑非常薄。该分析模型以与减小接触面积的工具相同的方式捕获了工具表面纹理的影响，并且与相应的实验切削力非常吻合。