Due to the poor laser formability of W10V5Co4 alloy steel and high wear resistance requirement for remanufacturing wear-out parts with preset-powder laser cladding (PPLC), Si and B were added to improve formability and wear resistance of PPLC W10V5Co4 alloy steel. Effects of Si (2 wt%) and B (0–4 wt%) on the microstructure, laser formability and wear properties of the designed alloy steel were investigated. The results indicate that laser formability and wear resistance were enhanced with the addition of Si and B, and the W10V5Co4Si2B4 alloy steel PPLC coating (Si: 2 wt%, B: 4 wt%) has the best combined properties of laser formability and wear resistance. The W10V5Co4Si2B4 alloy steel PPLC coating, with a hardness of 908 HV_0.2, has the wear rate of 1.5 × 10⁻⁸ mm³/(N·mm), which is 2.8 times higher than original W10V5Co4 alloy steel PPLC coating. The mechanism of Si and B on the improvement of laser formability and wear resistance were discussed in detail. A modified wear resistance equation is established here, which can provide new clues to design materials with high wear resistance for laser remanufacturing wear-out key parts.

由于W10V5Co4合金钢的较差的激光成形性，以及对使用预置粉末激光熔覆（PPLC）再制造磨损零件的高耐磨性要求，因此添加了Si和B以提高PPLC W10V5Co4合金钢的成形性和耐磨性。研究了Si（2 wt％）和B（0–4 wt％）对设计合金钢的显微组织，激光成形性和磨损性能的影响。结果表明，添加Si和B可以提高激光成形性和耐磨性，并且W10V5Co4Si2B4合金钢PPLC涂层（Si：2 wt％，B：4 wt％）具有最佳的激光成形性和耐磨性综合性能。 。W10V5Co4Si2B4合金钢PPLC涂层的硬度为908 HV _0.2，磨损率为1.5×10 ^-8 mm ³/（N·mm），是原始W10V5Co4合金钢PPLC涂层的2.8倍。详细讨论了硅和硼提高激光成形性和耐磨性的机理。在这里建立了一个改进的耐磨方程，可以为设计用于激光再制造磨损关键零件的高耐磨材料提供新的线索。