Mechanical Characterization of B4C-Gr Al2618 Based Composites Synthesized by Stir Casting Method

Aerospace and automotive industries rely heavily on aluminium alloys because of their advantageous physical and mechanical properties. This paper presents studies on the performance of stir cast B4C (Boron carbide) and Gr (graphite) reinforced aluminium metal matrix composite (AMMC). Particulate reinforcement of B4C and Gr is in the ratio 2:1 (wt.%). Characterization of AMMC's mechanical properties reveals that the composite has enhanced mechanical properties compared to Al2618. Through Scanning electron microscope(SEM), it is identified that microstructure of AMMC and distribution of B4C and Gr particles in Al2618 are found to be uniform. Based on the results of the experiments, it was determined that the best AMMC mixture for improving the material's mechanical properties is a combination of B4C and Gr, with the proportions at 8:4. As a result, the automobile sector stands to benefit greatly from the use of this AMMC in the production of engine components

Advancing the Performance of Ceramic - Reinforced Aluminum Hybrid Composites: A Comprehensive Review and Future Perspectives

Hybrid composites comprising aluminum reinforced with ceramics have surfaced as a potential class of materials that exhibit improved mechanical and thermal characteristics. These composites have a diverse range of applications across multiple industries. The present study offers a thorough examination of recent scholarly investigations pertaining to such composites, with particular emphasis on their mechanical performance, thermal attributes, and interfacial characteristics. This paper offers an extensive evaluation of ceramic-reinforced aluminum composites, along with a discussion of potential solutions and prospects for addressing the existing limitations and challenges. This review explores emerging areas of research, encompassing interface engineering methodologies, sophisticated processing techniques, and the incorporation of innovative reinforcement substances. The present recommendations are geared towards augmenting the efficacy, dependability, and durability of hybrid composites comprising ceramic and aluminum reinforcements

Wear behaviour of hybrid (boron carbide-graphite) aluminium matrix composites under high temperature

Abstract Aluminium MMCs are among the many metal composites and are regarded as progressive engineering materials in numerous industries because of their advantages compared to standard aluminium alloy. Among the reinforcements in MMCs, ceramic particles are preferred for their superior wear resistance, temperature resistance, and adhesion to their matrix, making them a popular choice. This research work has been carried out to synthesise ceramic particle-reinforced aluminium metal matrix composites and to evaluate their tribological properties at different temperatures (50–300℃). Al2618 alloy was selected as the matrix, and boron carbide (B4C) and graphite (Gr) were selected as reinforcements. Hybrid composites are prepared through stir casting by varying the wt.% of B4C and Gr reinforcement particles with a ratio of 3:2. Microstructural observation shows the uniform distribution of B4C and Gr particles throughout the matrix without any agglomeration, and it also exhibits excellent scanning electron microscope (SEM). X-ray diffraction analysis (XRD) was performed to verify the presence of different constituents in the developed material. Samples S4 (Al 2618 + 12 wt.% B4C—8 wt.% Gr) and S5 (Al 2618 + 15 wt.% B4C—10 wt.% Gr) exhibit enhanced wear resistance (16.45%) due to the incorporation of a higher quantity of Gr solid lubricants alongside B4C within the temperature range of 50 to 300℃. The thickness and stability of the glazed layer exhibited adequate resistance to wear