In this research, four different types of Al7075/SiC functionally graded materials (FGMs) are produced by varying the number of layers and weight percentages of silicon carbide(SiC). Each layer is fabricated with a predetermined configuration using the conventional powder metallurgy technique. The result of introducing different weight percentages of SiC particles in each layer and their effect on the functionally graded materials microstructure and mechanical properties are examined. The microstructural analysis clearly shows the uniform distribution of reinforcement material gradient from top to bottom and good interfacial bonding among the layers of FGMs. The functionally graded material’s density decreases with an increase in SiC weight percentage due to increased defects. The variation of hardness in each layer confirms the successful fabrication of Al7075/SiC functionally graded material with different layers. The mechanical properties of Al7075/SiC functionally graded materials mainly depend on the type of interfacial bonding between the layers, micro-cracks, pores, and SiC agglomerations. The prepared functionally graded materials exhibit extended mechanical and wear characteristics and are recommended in the manufacturing of gears, drive shafts, brake drums and bearings.

在这项研究中，通过改变碳化硅（SiC）的层数和重量百分比，生产了四种不同类型的Al7075 / SiC功能梯度材料（FGM）。使用常规粉末冶金技术以预定构造制造每一层。研究了在每层中引入不同重量百分比的SiC颗粒的结果以及它们对功能梯度材料的微观结构和机械性能的影响。显微组织分析清楚地显示了增强材料从上到下的梯度均匀分布，以及FGM层之间的良好界面结合。由于缺陷增加，功能梯度材料的密度随SiC重量百分比的增加而降低。每层硬度的变化证实了具有不同层的Al7075 / SiC功能梯度材料的成功制造。Al7075 / SiC功能梯度材料的机械性能主要取决于层，微裂纹，孔和SiC团聚体之间的界面结合类型。制备的功能梯度材料具有扩展的机械和磨损特性，建议在齿轮，驱动轴，制动鼓和轴承的制造中使用。