Rajesh Pinnavasal Venukrishnan, Gupta Krishna Kumar, Čep Robert, Ramachandran Manickam, Kouřil Karel, Kalita Kanak
Department of Mechanical Engineering, Saranathan College of Engineering, Trichy 620012, India.
Department of Mechanical Engineering, Malwa Institute of Science and Technology, Indore 453111, India.
Materials (Basel). 2022 Feb 24;15(5):1715. doi: 10.3390/ma15051715.
Aluminum is a widely popular material due to its low cost, low weight, good formability and capability to be machined easily. When a non-metal such as ceramic is added to aluminum alloy, it forms a composite. Metal Matrix Composites (MMCs) are emerging as alternatives to conventional metals due to their ability to withstand heavy load, excellent resistance to corrosion and wear, and comparatively high hardness and toughness. Aluminum Matrix Composites (AMCs), the most popular category in MMCs, have innumerable applications in various fields such as scientific research, structural, automobile, marine, aerospace, domestic and construction. Their attractive properties such as high strength-to-weight ratio, high hardness, high impact strength and superior tribological behavior enable them to be used in automobile components, aviation structures and parts of ships. Thus, in this research work an attempt has been made to fabricate Aluminum Alloys and Aluminum Matrix Composites (AMCs) using the popular synthesis technique called stir casting and join them by friction stir welding (FSW). Dissimilar grades of aluminum alloy, i.e., Al 6061 and Al 1100, are used for the experimental work. Alumina and Silicon Carbide are used as reinforcement with the aluminum matrix. Mechanical and corrosion properties are experimentally evaluated. The FSW process is analyzed by experimentally comparing the welded alloys and welded composites. Finally, the best suitable FSW combination is selected with the help of a Multi-Attribute Decision Making (MADM)-based numerical optimization technique called Weighted Aggregated Sum Product Assessment (WASPAS).
铝是一种广受欢迎的材料，因其成本低、重量轻、可加工性好且易于机械加工。当向铝合金中添加陶瓷等非金属时，会形成一种复合材料。金属基复合材料（MMC）作为传统金属的替代品正在兴起，因为它们能够承受重载、具有出色的耐腐蚀和耐磨性能，以及相对较高的硬度和韧性。铝基复合材料（AMC）是MMC中最受欢迎的类别，在科研、结构、汽车、船舶、航空航天、家用和建筑等各个领域都有无数应用。它们具有诸如高强度重量比、高硬度、高冲击强度和优异的摩擦学性能等吸引人的特性，使其能够用于汽车部件、航空结构和船舶部件。因此，在本研究工作中，尝试使用名为搅拌铸造的流行合成技术来制备铝合金和铝基复合材料（AMC），并通过搅拌摩擦焊（FSW）将它们连接起来。不同等级的铝合金，即Al 6061和Al 1100，用于实验工作。氧化铝和碳化硅用作铝基体的增强材料。通过实验评估力学和腐蚀性能。通过对焊接合金和焊接复合材料进行实验比较来分析FSW工艺。最后，借助一种基于多属性决策（MADM）的数值优化技术——加权聚合和积评估（WASPAS），选择最合适的FSW组合。
