The influence of the aluminium content (x) on crater wear mechanisms of Ti_1-xAl_xN coated WC-Co inserts in high-speed turning of 316L stainless steel was investigated. Electron microscopy and energy dispersive X-ray spectroscopy were used to characterize the wear behaviour. Ti_1-xAl_xN coatings with x ≤ 0.53 showed, after 1/3 of the tool life, a thick adhered layer composed of oxides and metallic species from the steel, and no diffusion of workpiece material into the coating. These coatings presented the best wear resistance and least abrasive wear. The high aluminium content Ti_0·38Al_0·62N coating showed the worst crater wear resistance. This is assigned to interdiffusion of workpiece elements and oxygen into the coating as a consequence of spinodal decomposition of the cubic TiAlN-phase, resulting in more severe abrasive wear.

研究了铝含量 (x) 对316L 不锈钢高速车削中Ti _1-x Al _x N 涂层 WC-Co 刀片的弧坑磨损机制的影响。使用电子显微镜和能量色散 X 射线光谱来表征磨损行为。x ≤ 0.53 的Ti _1-x Al _x N 涂层在刀具寿命的 1/3 之后显示出由钢中的氧化物和金属物质组成的厚粘附层，并且工件材料没有扩散到涂层中。这些涂层表现出最好的耐磨性和最少的磨料磨损。高铝含量 Ti _{0 · 38} Al _{0 · 62}N 涂层表现出最差的抗凹坑磨损性。这是由于立方 TiAlN 相的旋节线分解导致工件元素和氧气相互扩散到涂层中，导致更严重的磨损。