Role of Solid Lubricant and Bauxite Residue on the Tribological Behaviour of Aluminium Hybrid Composites

Aluminium Matrix Composites (AMCs) have acquired popularity due to their advantageous qualities, such as high strength, stiffness, and lightweight nature when compared to other metals. These materials are particularly essential in a range of industries, including automotive and aerospace, due to their remarkable features. Wear, a frequent outcome of two rubbing surfaces in motion, has been scientifically examined. The wear behavior of AMCs reinforced with graphite (Gr) and red mud (RM) particles is the subject of this study. A thin layer of graphite particles protects against direct metal-to-metal contact and decreases wear rates. The study also looks into the impact of several factors on wear rates, such as load, speed, and time. Load has a substantial influence on wear, with larger loads resulting in more wear due to increased frictional pressure and material debonding. The hardness of the mechanically mixed layer (MML) that forms on worn surfaces has been improved, resulting in lower wear rates. Furthermore, oxidation and the addition of graphite particles influence wear rates at higher speeds. The effects of time on wear rates are also investigated, and ceramic particles are added to increase wear resistance. The findings contribute to a better understanding of wear processes and the creation of wear-resistant materials. According to the study, AMCs reinforced with graphite and red mud particles have better wear resistance, making them suitable for a wide range of technical applications. This study provides insight into the intricate aspects of preparation of Al – Gr-RMp composites and its wear behaviors subjected to various parameters such as load, speed and time.