This study focused on producing metal matrix composite (MMC) coatings on Ti–6Al–4V alloy through laser surface alloying using a novel combination of Inconel 625 and SiC precursor materials. Various ratios of alloying powders were examined to evaluate surface properties such as microhardness, wear resistance, and friction coefficient, along with analyzing the phase composition and microstructure of the coatings. The in situ synthesized MMC coatings exhibited the presence of α-Ti, NiTi, NiTi₂, and TiC phases. Additionally, Ti₅Si₃ and α-Ti/Ti₅Si₃ eutectic structures were observed when the SiC content exceeded 20%. In comparison to the titanium substrate, the MMC coating significantly enhanced microhardness by over threefold and reduced wear by 95%. However, it was crucial to carefully select the appropriate combination of alloying powders to avoid a substantial decrease in friction performance and excessive formation of cracks. Through a comparative analysis of experimental results, the optimal precursor material composition was identified as 85% Inconel 625 and 15% SiC. This study demonstrated the effective utilization of Inconel 625 and SiC alloying materials to enhance the surface properties of titanium alloys, thereby expanding their application in challenging environments.

本研究的重点是使用 Inconel 625 和 SiC 前体材料的新型组合，通过激光表面合金化在 Ti-6Al-4V 合金上生产金属基复合材料 (MMC) 涂层。检查了不同比例的合金粉末，以评估显微硬度、耐磨性和摩擦系数等表面性能，同时分析涂层的相组成和微观结构。原位合成的MMC涂层表现出α-Ti、NiTi、NiTi ₂ 和TiC相的存在。此外，当SiC含量超过20%时，观察到Ti ₅ Si ₃ 和α-Ti/Ti ₅ Si ₃ 共晶组织。与钛基体相比，MMC 涂层显着提高了三倍以上的显微硬度，并减少了 95% 的磨损。然而，仔细选择合金粉末的适当组合以避免摩擦性能大幅下降和过度形成裂纹至关重要。通过对实验结果的对比分析，确定最佳前驱体材料成分为85% Inconel 625和15% SiC。这项研究证明了有效利用 Inconel 625 和 SiC 合金材料来增强钛合金的表面性能，从而扩大其在具有挑战性的环境中的应用。