Squeeze casting is one of the simplest processes of manufacturing of composite materials and it attains higher advantages of low material processing cost, easy handling of material, size, design and good stability of matrix structure. LM24 aluminium alloy reinforced with silicon carbide (SiC) and coconut shell ash (CSA) were used to prepare the composite. LM24 alloy had wide engineering applications, wherein the addition of SiC enhances the wear resistance and CSA particles offer significant technical and economic benefits. In the present study, the composite samples were prepared based on Taguchi experimental conditions L₁₆ (4-levels and 5- parameters) through squeeze casting method. From the experimental results, percentage of reinforcement and squeeze pressure were most influential parameters on impact strength. The optimum casting condition was obtained by using Taguchi optimization. From microstructural study, applying high level of squeeze pressure improved the uniform dispersion, good bonding between the matrix and reinforcement. Also, 25% of impact strength was improved the composite using Taguchi optimum conditions compared than conventional alloys. Higher squeeze pressure seen to have refined dendritic structure with uniform distribution of reinforcement materials in the aluminium matrix.

挤压铸造是复合材料制造中最简单的工艺之一，它具有材料加工成本低，材料易于处理，尺寸，设计以及基体结构稳定性好的优点。用碳化硅（SiC）和椰壳灰（CSA）增强的LM24铝合金制备了复合材料。LM24合金具有广泛的工程应用，其中添加SiC可以增强耐磨性，而CSA颗粒则具有显着的技术和经济效益。在本研究中，根据田口实验条件L ₁₆制备了复合材料样品（4级和5参数）通过挤压铸造法。从实验结果来看，增强百分比和挤压压力是影响冲击强度的最重要参数。最佳浇铸条件是通过田口优化获得的。从微观结构研究来看，施加高水平的挤压压力可改善均匀分散性，增强基体与增强材料之间的粘结性。而且，与传统合金相比，在田口最适条件下，复合材料的冲击强度提高了25％。较高的挤压压力显示出具有细化的树枝状结构，且增强材料在铝基质中分布均匀。