Synergistic Optimization of Adhesion Resistance and Cutting Performance of Textured Tools with TiAlN Coating

2.25Cr1Mo0.25V steel, known for its high strength, corrosion resistance, and structural stability, is commonly used in petrochemical and nuclear power equipment. High-temperature/high-pressure cutting often induces severe rake-face wear and adhesive deterioration of the tool. This study presents a carbide tool incorporating a composite microtexture with a TiAlN coating and explores its synergistic optimization mechanism. The effects of this combined structure on cutting performance, film-substrate bonding strength, stress distribution, and adhesive failure were systematically investigated. Compared with the NT tool, the adhesive area is reduced by 53.3% and the film-substrate bonding strength is enhanced by 45.7%. Meanwhile, stress concentration is effectively relieved, leading to improved antiadhesion performance and wear resistance. The coating effectively prevents the diffusion of affinity elements at high temperatures, thereby improving the bonding strength between the coating and the substrate. This, in turn, further enhances the interfacial adhesion and produces a synergistic effect that delays tool failure. The study demonstrates that the synergistic effect of the microtextured and coating can simultaneously reduce friction and improve wear resistance and antiadhesion performance, providing theoretical insights and design guidance for efficient and precise cutting of high-temperature, difficult-to-machine materials.