Impact-Abrasive Wear Behavior of Cutting Tool Cemented Carbide YG8
LI Yan1, CAO Rui1,*, CHE Hongyan2, ZHAI Yazhong2
1 State Key Laboratory of Advanced Processing and Reuse of Non-ferrous Metals, College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China 2 China Iron and Steel Research Institute, Beijing 100083, China
Abstract: Aims to explore the failure mechanism of the cutting tools cemented carbide YG8 under actual working conditions, through impact-abrasive wear tests and acid mist corrosion coupling experiments, the wear mechanism and causes of failure were studied and analyzed in this work. The results showed that the wear effect is more obvious when the impact energy is low, and the failure of YG8 is primarily characterized by the loss of the binder phase, leading to the detachment of large hard particles and layer-by-layer peeling. When impact energy is high, the impact effect becomes more significant, and the failure of YG8 is mainly manifested by the cracking of hard particles, causing crack propagation and se-condary damage to the WC in YG8. With the increase of the impact energy, the influence also increases, but the amount of material removed decreases. During the impact wear process, the wear mechanism gradually shifts from scratching and micro-cutting to the formation of large-area furrows. The edges are subjected to compressive stress, resulting in plastic deformation and edge collapse. Acid mist corrosion reduces the content of the binder phase in the material, causing cracks and the formation of oxides, which negatively affect the impact wear resistance of YG8. This article also establishes a relationship between the amount of material removed (M) and various factors, providing guidance for the subsequent choice and improvement of tool materials.
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2026, Vol. 40 
