Fabrication, Characterization, and Impact of Heat Treatment on Sliding Wear Behaviour of Aluminium Metal Matrix Composites Reinforced with B₄C

Abstract

The aim of this research paper is to find the wear behaviour of Al7075 MMCs. In this investigation, the wear tests on the as-cast and age-hardened specimens were performed on an advanced rotary tribometer. The materials selected for the analysis are Al7075 as a matrix, and the reinforcements are boron carbide. By using stir casting, metal matrix composites are manufactured by adding B4C as a reinforcement particulate in Al7075. The fabricated composites were characterized and the wear behaviour of these composites was carried out on an advanced rotary tribometer. The wt. % of the reinforcements was taken as 6%, 8%, 10%, and 12%. The almost homogeneous blending of reinforcements is shown by the microstructural characterization of Al7075 MMCs. It is observed that due to the rise in weight percentage of the reinforcement to 12% higher hardness is obtained. For 12% of reinforcements, there is an increase in hardness due to the heat treatment than that of the as-cast composites. From this study, it was found that the wear rate is the function of the applied load, microstructure, and volume fraction of the reinforcements. The wear rate was increasing with the sliding velocity.

The Role of Tetra Hybrid Reinforcements on the Behavior of Aluminum Metal Matrix Composites

“…Particulate Reinforcement Used to Synthesis HAMCs. The cost of the particulate reinforced composites (SiC, Al 2 O 3 , and Gr) is less than the fiber-reinforced composites, due to the lower cost of particles [25]. Moreover, the physicomechanical, tribological, and corrosion properties of particulates are generally isotropic.…”

“…The physicomechanical characteristics of Al, SiC, Al 2 O 3 , Gr, and SCBA reinforced MMCs are superior to those of the base metal (pure Al) and its alloys [24,25]. The general physicomechanical properties of Al, SiC, Al 2 O 3 , Gr, and SCBA are depicted in Table 3.…”

“…This is due to an increase in particulate uniform distribution within the matrix. Moreover, Gr aids in the rearrangement and movement of hard particles inside the base materials, resulting in increased hardness and decreased porosity [25].…”

Multi-response optimization of process and reinforcement parameters of hybrid reinforced Al matrix composites using Taguchi- Grey relational analysis

“…The cost of the particulate-reinforced composites (SiC, Al 2 O 3 , and Gr) is less than the fiber-reinforced composites, due to the lower cost of particles [44]. Moreover, the physicomechanical, tribological, and corrosion properties of particulates are generally isotropic.…”

Synthesis and Wear Behaviour Analysis of SiC- and Rice Husk Ash-Based Aluminium Metal Matrix Composites

“…For applications in the automotive and aerospace industries, lightweight and high-performance materials are required. The lightweight material is produced by developing composites with hard reinforcement particulates in the matrix of soft material [7]. Singh et al reported that, for application in the automobile, aerospace, and aircraft industries, lightweight and high-performance materials are required [7].…”