Aluminum matrix composites are widely employed in aerospace, military, automobile, and transport applications. The high-strength with low-weight materials are required to fulfill the requirement of high-performance applications. The low-weight materials are reinforced with hard reinforcements to obtain high-strength-to-weight properties for using high-performance applications. The process parameters of fabrication technique define the mechanical and tribological properties. Many types of optimization tools are used for optimizing the process parameters of fabrication method. In this research, the aluminum alloy 7050 and boron carbide are selected as matrix material and reinforcement material. The fabrication of Al7050/B₄C composites is produced by the stir casting method. The optimization on stir casting process parameters is done by using the Taguchi approach. The L9 orthogonal array is chosen for this investigation. The chosen input stir casting process parameters are wt% B₄C, stirring time (10, 15, and 20 min), stirring speed (300, 350, and 400 rpm), and melting temperature (700, 750, and 800°C). The microhardness is selected as a valuable response parameter for optimizing the stir casting process parameters. The influencing stir casting process parameter sequence is determined by using mean table. The influencing parameters of stir casting on microhardness are stirring speed, stirring time, wt% B₄C, and melting temperature. The 9 wt% of boron carbide addition increases the microhardness, and it is higher than the other wt%. The optimum combination of input process parameter combination is 9 wt% boron carbide, 750°C melting temperature, 350 rpm stirring speed, and 15 min stirring time (A3B2C2D2). The percentage of microhardness value improvement is 20.3%.

中文翻译：

---

Al7050/Nano-B4C金属基复合材料搅拌铸造工艺参数优化

铝基复合材料广泛应用于航空航天、军事、汽车和运输应用。需要高强度和低重量的材料来满足高性能应用的要求。轻质材料通过硬质增强材料进行增强，以获得用于高性能应用的高强度重量比特性。制造技术的工艺参数定义了机械和摩擦学特性。许多类型的优化工具用于优化制造方法的工艺参数。本研究选用7050铝合金和碳化硼作为基体材料和增强材料。_{Al7050/B 4}的制备C复合材料是通过搅拌铸造法生产的。搅拌铸造工艺参数的优化是通过使用田口方法完成的。本研究选择 L9 正交阵列。选择的输入搅拌铸造工艺参数为 wt% B ₄ C、搅拌时间（10、15 和 20 分钟）、搅拌速度（300、350 和 400 rpm）和熔化温度（700、750 和 800°C） ). 选择显微硬度作为优化搅拌铸造工艺参数的有价值的响应参数。利用均值表确定影响搅拌铸造的工艺参数顺序。搅拌铸造对显微硬度的影响参数有搅拌速度、搅拌时间、wt% B ₄C，和熔化温度。添加9 wt%的碳化硼增加了显微硬度，并且高于其他wt%。输入工艺参数组合的最佳组合为9wt％碳化硼、750℃熔化温度、350rpm搅拌速度和15分钟搅拌时间(A3B2C2D2)。显微硬度值提高百分比为20.3%。