Enhancement of Wettability of Aluminum Based Silicon Carbide Reinforced Particulate Metal Matrix Composite

Abstract

Lately, materials research has shifted to composite materials from monolithic, adjusting to the global need for light weight, low cost, quality, and high performance in structural materials. Every effort aims to develop a material which can be appropriate for various industry and machinery purpose. In the present study, a modest attempt has been made to develop cast aluminum based silicon carbide (SiC) particulate metal matrix composite (MMC) and worked upon to raise the wettability factor between the matrix and dispersion phase. Magnesium (Mg) is used as wetting agent. It works by scavenging the oxygen from dispersoids surface and thinning the gas layer around dispersoids and this is done by forming MgO or MgAl 2 O 4 or both according to concentration of Magnesium added. Mg 2 Si is the compound responsible for strengthening. The combination of aluminum and magnesium seems to have synergetic effect on wetting and give appropriate strength. All mechanical properties obtained are well correlated with microstructure obtained by Scanning electron micrograph. Differential thermal analysis (DTA) and thermo gravimetric analysis (TGA) also justified the results obtained in present investigations.

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

“…An improvement of 47.3% in ultimate tensile strength (UTS), 50% in hardness and 60% in impact strength over the metal alloy were reported. This improvement in mechanical properties can be attributed to the presence of Mg as the principal constituent in AA6063, which acts as a surfactant and augments the wettability between Al and SiC by reducing the oxide layer on the surface of SiC [11]. Tribological properties of AA6063/clay composites have been explored by Agbeleye et al [12] for brake disc rotor applications.…”

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

“…Recent research has shown that energy efficient microwaves is a newly explored method and it has been applied successfully in processing of various materials, fabricating materials with improved mechanical properties. Microwave sintering is a distinguishing and alternative technique when compared with the existing processes utilizing orthodox heating sources [ 19 , 20 ] with a strong potential of enhanced turn-over and reduced energy consumption.…”

Spatial and microstructural dependence of mechanical properties and wear performance of functionally graded Al–TiAl3 in situ composite

“…The measured stress-strain curve of all samples (blocky, mixed, plate) and also that of the pure Al [11] are shown in Fig. 5.…”

“…Microhardness values of blocky TiAl 3 , plate TiAl 3 , Al and Ti phasesFig. 5Stress-strain curves for three tested FGC samples and pure Al adopted from Singh et al[11] …”