In this study, SiC/AlSi10Mg aluminum matrix composites (AMCs) were fabricated by laser metal deposition (LMD), and the effects of SiC content on microstructure, microhardness, wear performance and tensile properties were investigated. After LMD processing, the diffraction angle of the highest diffraction peak of the α-Al phase changed from 38.470° to 44.833°, demonstrating a clear preferred orientation. Si and Mg elements gathered at the grain boundaries in form of Si and Mg₂Si phases. The presence of SiC promoted the aggregation of Fe elements, forming the needle-like Al-Fe-Si eutectic phase. As the SiC content increased, the grain size of the middle area decreased and the randomness of the texture distribution increased. Furthermore, the AMCs with 2wt.% SiC exhibited impressive comprehensive performances, i.e., microhardness of 117.06 HV, a wear rate of 1.84×10⁻³ mm³N^-1m^-1 and tensile strength of 219.04MPa. The wear resistance was improved and the wear mechanism changed from adhesive wear to abrasive wear with the addition of SiC participles.

通过激光金属沉积（LMD）制备SiC / AlSi10Mg铝基复合材料（AMC），并研究了SiC含量对组织，显微硬度，耐磨性能和拉伸性能的影响。在LMD处理之后，α-Al相的最高衍射峰的衍射角从38.470°变为44.833°，表明明显的优选取向。Si和Mg元素以Si和Mg _2的形式聚集在晶界处硅相。SiC的存在促进了Fe元素的聚集，形成了针状的Al-Fe-Si共晶相。随着SiC含量的增加，中间区域的晶粒尺寸减小，织构分布的随机性增加。此外，具有2wt。％SiC的AMC显示出令人印象深刻的综合性能，即117.06HV的显微硬度，1.84×10 ^-3 mm ³ N ^-1 m ^-1的磨损率和219.04MPa的拉伸强度。通过添加SiC颗粒，耐磨性得到改善，磨损机理从粘合剂磨损变为磨料磨损。