The present study investigates the impact of novel ultrasonic-assisted squeeze casting parameters on the fabrication of AA2014/Al₂O₃ nanocomposites using the Taguchi Grey response surface methodology. The experiments were carried out using Taguchi's L₁₆ orthogonal array, with five different controllable parameters of ultrasonic-assisted squeeze casting process such as ultrasonic power (1.5–2.25 kW), ultrasonic time (4–16 min.), pouring temperature (700–850 °C may result in premature solidification), squeeze pressure (50–200 MPa) and wt % of reinforcement (1-4). The process's performance measures included hardness, ultimate tensile strength, percentage of elongation and grain size. The microstructure of the nanocomposites was investigated using optical microscopy, high-resolution scanning electron microscopy and X-ray diffraction technique. The multiple responses were converted into a single Grey relational grade, which was then used in modelling and optimization using the response surface methodology. Analysis of variance and 3D surface plots were generated to investigate the most important parameters affecting the quality of AA2014/Al₂O₃ nanocomposites. The results showed that the optimum parameter settings were ultrasonic power of 2.2489 kW, ultrasonic time of 15.91min, pouring temperature of 700.67 °C, squeeze pressure of 41 MPa and wt % of reinforcement of 1.85. The results of TGRSM demonstrated that ultrasonic power had the strongest correlation with responses, with significant improvements in UTS and grain size. The confirmation experiment revealed an improvement of 0.201 in GRG.

本研究使用田口格雷响应面方法研究了新型超声辅助挤压铸造参数对 AA2014/Al ₂ O ₃纳米复合材料制造的影响。实验使用 Taguchi 的 L ₁₆正交阵列，具有超声功率（1.5-2.25 kW）、超声时间（4-16 分钟）、浇注温度（700-850 °C 可能导致过早凝固）五个不同的超声辅助挤压铸造工艺可控参数、挤压压力 (50–200 MPa) 和增强材料的重量百分比 (1-4)。该工艺的性能指标包括硬度、极限拉伸强度、伸长率和晶粒尺寸。使用光学显微镜、高分辨率扫描电子显微镜和 X 射线衍射技术研究了纳米复合材料的微观结构。多个响应被转换为一个单一的格雷相关等级，然后使用响应面方法将其用于建模和优化。₂ O ₃纳米复合材料。结果表明，最佳参数设置为超声功率2.2489 kW，超声时间15.91min，浇注温度700.67 ℃，挤压压力41 MPa，增强材料重量百分比1.85。TGRSM 的结果表明，超声波功率与响应的相关性最强，UTS 和晶粒尺寸有显着改善。确认实验显示 GRG 提高了 0.201。