Basar Gokhan, Kahraman Funda, Der Oguzhan
Department of Industrial Engineering, Faculty of Engineering and Natural Sciences, Osmaniye Korkut Ata University, 80010 Osmaniye, Türkiye.
Department of Mechanical Engineering, Faculty of Engineering, Tarsus University, 33400 Mersin, Türkiye.
Materials (Basel). 2025 Sep 15;18(18):4319. doi: 10.3390/ma18184319.
In this study, aluminium matrix hybrid composites reinforced with boron carbide (BC) and silicon carbide (SiC) were fabricated using the direct hot-pressing technique under 35 MPa pressure at 600 °C for 5 min. Particle size distribution and scanning electron microscope analysis were conducted for the input powders. The microstructure, mechanical properties, and drillability of the fabricated composites were examined. As the SiC content increased, the density decreased, hardness improved, and transverse rupture strength declined. Drilling experiments were performed based on the Taguchi L orthogonal array. The control factors included cutting speed (25 and 50 m/min), feed rate (0.08, 0.16, and 0.24 mm/rev), point angle (100°, 118°, and 136°), and SiC content (0%, 5%, and 10%). Quality characteristics such as thrust force, torque, surface quality indicators, diameter deviation, and circularity deviation were evaluated. The Taguchi method was applied for single-response optimization, while the Entropy-weighted, Taguchi-based CoCoSo method was used for multi-response optimization. Analysis of Variance was conducted to assess factor significance, and regression analysis was used to model relationships between inputs and responses, yielding high R values. The optimal drilling performance was achieved at 50 m/min, 0.08 mm/rev, 136°, and 10% SiC, and the confirmation tests verified these results within the 95% confidence interval.
在本研究中，采用直接热压技术，在35兆帕压力、600℃下保持5分钟，制备了碳化硼（BC）和碳化硅（SiC）增强的铝基混杂复合材料。对输入粉末进行了粒度分布和扫描电子显微镜分析。对制备的复合材料的微观结构、力学性能和可钻性进行了研究。随着SiC含量的增加，密度降低，硬度提高，横向断裂强度下降。基于田口L正交阵列进行了钻孔实验。控制因素包括切削速度（25和50米/分钟）、进给速度（0.08、0.16和0.24毫米/转）、顶角（100°、118°和136°）以及SiC含量（0%、5%和10%）。对轴向力、扭矩、表面质量指标、直径偏差和圆度偏差等质量特性进行了评估。田口方法用于单响应优化，而基于熵权和田口的CoCoSo方法用于多响应优化。进行方差分析以评估因素的显著性，并使用回归分析对输入和响应之间的关系进行建模，得到了较高的R值。在切削速度50米/分钟、进给速度0.08毫米/转、顶角136°和SiC含量10%的条件下实现了最佳钻孔性能，验证试验在95%置信区间内证实了这些结果。
