Laser metal deposition (LMD) with a coaxial powder feeding technology has been applied to fabricate pure aluminum alloy (AlSi7Mg) and low oxidation graphene aluminum matrix (LOG-Al) composites with low oxidation graphene (LOG) contents of 0.05 wt % and 0.1 wt % after the powder was prepared by wet ball milling. The LOG-Al composites showed improvements in all properties including hardness, tensile strength, ductility, modulus of elasticity and yield strength with the increase of LOG addition contents. The microstructures and fracture surfaces of the composites were observed and the results of TEM, HRTEM, optical microscope, EBSD, XRD spectra, Raman spectra, Vickers hardness, tensile properties were analyzed. The effects of wet ball milling, the addition of low oxidation graphene and its contents and LMD process on microstructure formation and resulting mechanical properties were discussed.

采用同轴送粉技术的激光金属沉积 (LMD) 已被应用于制造纯铝合金 (AlSi7Mg) 和低氧化石墨烯铝基 (LOG-Al) 复合材料，低氧化石墨烯 (LOG) 含量分别为 0.05 wt% 和 0.1 wt%通过湿球磨制备粉末后的％。随着LOG添加量的增加，LOG-Al复合材料的所有性能均有所改善，包括硬度、拉伸强度、延展性、弹性模量和屈服强度。观察了复合材料的显微组织和断口表面，并对TEM、HRTEM、光学显微镜、EBSD、XRD谱、拉曼谱、维氏硬度、拉伸性能等结果进行了分析。湿球磨的效果，