EFFECTS OF MODIFIED KAOLIN ON MECHANICAL PROPERTIES OF ALUMINIUM METAL MATRIX COMPOSITE
This study investigated the effect of modified kaolin on the mechanical properties of aluminium metal matrix composites (MMCs). Aluminium alloys are widely used for their lightweight properties but can be limited by mechanical strength. Metal matrix composites offer a potential solution by combining the benefits of metal and reinforcing materials. However, traditional reinforcing materials can be expensive. This study explores the possibility of using kaolin, a more cost-effective alternative, as a reinforcing material. Kaolin was modified at different temperatures (550°C and 1100°C) and incorporated into the aluminium matrix at varying weight percentages. The resulting MMCs were then subjected to mechanical testing to assess their compressive strength, tensile strength, hardness, and fracture toughness. The results revealed that the modification temperature and kaolin content significantly impacted the mechanical properties of the MMCs. Samples modified at 550°C exhibited higher compressive strength compared to those modified at 1100°C. In contrast, higher modification temperatures led to improved fracture toughness. The addition of kaolin also influenced hardness, with a general trend of decreasing hardness with increasing kaolin content. This study suggests that modified kaolin can be a viable reinforcing material for aluminium MMCs. The mechanical properties can be tailored by adjusting the modification temperature and kaolin content. Further research is recommended to optimize these parameters for specific applications.
Authors : Mohammed, G.M., Hammajam, A.A. and Mshelia, Z.A.
Category : Open Access Volume (Issue) : 9(1) Date Uploaded : 22nd May 2024