Effects of Solution Treatment on the Microstructure and Wear Resistance of W6Mo5Cr4V2 Cladding Layer

To investigate the influence of solution heat treatment on the microstructure and mechanical properties of high‐speed steel coatings, W6Mo5Cr4V2 cladding layers were fabricated on 35CrMnSi alloy steel substrates via laser cladding. The microstructure evolution and wear resistance were systematically evaluated after solution treatments at 950, 1000, and 1050 °C. The results indicate that the as‐clad layers exhibited a network microstructure. After solution treatment, quenching and tempering, the boundaries of the network structure are significantly refined. The specimen solution treated at 1000 °C demonstrated optimal refinement and density. Under this condition, the cladding layer achieved the highest average microhardness (818.7 HV _0.1 ), the lowest coefficient of friction (0.36), the shallowest wear scar depth (43 μm), and the minimum wear mass loss (2.2 mg). The dominant wear mechanism transitioned from fatigue wear (as‐clad condition) and adhesive wear (950 °C) to abrasive wear following the 1000 °C treatment. This shift is attributed to the synergistic effects of precipitated hard phases, the refined network structure, and the elevated hardness. These findings confirm the critical role of solid solution treatment, identifying 1000 °C as the optimal temperature for enhancing both microstructure and wear resistance of W6Mo5Cr4V2 cladding layer.