Functionally graded (FG) Al8Si3Cu alloy and 8 wt% titanium carbide (TiC) reinforced composite (∅_out100 × ∅56_in × 100 mm) was fabricated through horizontal centrifugal casting, followed by T6 heat treatment. Metallographic analysis confirmed fine grain structure at FG alloy outer layers, whereas heat-treated alloy displayed spheroidised eutectic silicon. Gradient microstructure was observed for FG composite. Enhanced hardness for outer layer (10.31%) and tensile strength for outer zone (58.71%) were observed for heat-treated Al8Si3Cu/TiC composite owing to the high concentration of spheroidised eutectic Si and TiC particles, compared to as-cast composite. Linear reciprocating wear analysis performed on as-cast, heat-treated alloy and composite, respectively, at varying load (10–40 N) and sliding distance (500–2000 m) confirmed increasing wear rate, with heat-treated composite having superior wear resistance. Delamination wear was the predominant wear mechanism influencing wear behaviour of heat-treated composite. The alloy and composite were characterized using X-ray diffraction (XRD), energy dispersive spectrometry (EDS), optical microscopy (OM) and scanning electron microscopy (SEM).

功能梯度（FG）Al8Si3Cu合金和8重量％的碳化钛（TiC）增强复合（∅_出100×∅56_在 ×100 mm）是通过水平离心铸造制造的，然后进行T6热处理。金相分析证实了FG合金外层的细晶粒结构，而经过热处理的合金则显示出球化的共晶硅。观察到FG复合材料的梯度微观结构。与铸态复合材料相比，由于球化的共晶Si和TiC颗粒的浓度高，热处理后的Al8Si3Cu / TiC复合材料的外层硬度（10.31％）和外层拉伸强度（58.71％）均得到提高。对铸态，热处理合金和复合材料分别在变化的载荷（10–40 N）和滑动距离（500–2000 m）下进行的线性往复磨损分析证实了磨损率的增加，热处理的复合材料具有优异的磨损抵抗性。分层磨损是影响热处理后复合材料磨损行为的主要磨损机制。使用X射线衍射（XRD），能量色散光谱（EDS），光学显微镜（OM）和扫描电子显微镜（SEM）对合金和复合材料进行表征。