The combined use of focused ion beam (FIB) milling and field-emission scanning electron microscopy inspection (FESEM) is a unique and successful approach for assessment of near-surface phenomena at specific and selected locations. In this study, a FIB/FESEM dual-beam platform was implemented to docment and analyze the wear micromechanisms on a laser-surface textured (LST) hardmetal (HM) tool. In particular, changes in surface and microstructural integrity of the laser-sculptured pyramids (effective cutting microfeatures) were characterized after testing the LST-HM tool against a steel workpiece in a workbench designed to simulate an external honing process. It was demonstrated that: (1) laser-surface texturing does not degrade the intrinsic surface integrity and tool effectiveness of HM pyramids; and (2) there exists a correlation between the wear and loading of shaped pyramids at the local level. Hence, the enhanced performance of the laser-textured tool should consider the pyramid geometry aspects rather than the microstructure assemblage of the HM grade used, at least for attempted abrasive applications.

聚焦离子束（FIB）铣削和场发射扫描电子显微镜检查（FESEM）的组合使用是评估特定位置和选定位置的近地表现象的独特且成功的方法。在这项研究中，实现了FIB / FESEM双光束平台，以记录和分析激光表面纹理化（LST）硬质合金（HM）工具上的磨损微机制。特别是，在设计用于模拟外部珩磨过程的工作台上对钢制工件测试LST-HM工具后，对激光雕刻金字塔的表面和微结构完整性（有效的切削微观特征）的变化进行了表征。结果表明：（1）激光表面纹理化不会降低HM金字塔的固有表面完整性和工具有效性；（2）局部金字塔形的磨损与载荷之间存在相关性。因此，激光纹理化工具的增强性能应至少在尝试进行磨料应用时考虑棱锥几何形状方面，而不是所用HM级的微观结构组合。