Abstract

In this study the results of investigating the change in the chemical composition in the surface layers of cutting tools at the beginning of machining are presented. To describe this change, physical modeling, imitating the initial stage of machining and wear, is performed. The investigated samples made of TT8K6 alloy with a Ti–Al–N coating is thermally and mechanically loaded at 700°C by an applied pressure of 0.5 GPa for 20 minutes. This corresponds to the thermal and mechanical loads on the coating during machining. The change in the chemical composition in the surface layers of coated tools are investigated by glow-discharge optical emission spectroscopy analysis. A variation in the titanium, aluminum and oxygen content in the surface layers after modeling is described. Qualitative elemental composition profiles are presented. In addition, the microstructure of the samples obtained by scanning electron microscopy is presented. Element distribution maps are obtained.

中文翻译：

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具有 TI-Al-N 涂层表面层的硬质合金刀具在加工过程中的化学成分变化

摘要

在这项研究中，研究了加工开始时切削工具表层化学成分变化的结果。为了描述这种变化，进行物理建模，模拟加工和磨损的初始阶段。由具有 Ti-Al-N 涂层的 TT8K6 合金制成的研究样品在 700°C 下通过 0.5 GPa 的施加压力 20 分钟进行热和机械加载。这对应于加工过程中涂层上的热负荷和机械负荷。通过辉光放电发射光谱分析研究了涂层工具表层化学成分的变化。描述了建模后表面层中钛、铝和氧含量的变化。给出了定性的元素组成概况。此外，展示了通过扫描电子显微镜获得的样品的微观结构。得到元素分布图。