Microstructure and mechanical properties of silicon carbide particle reinforced aluminium 6101 metal matrix composite produced by two-step stir casting

Sustainable development on production and characterization of metal matrix composites using stir casting

“…The peaks observed in all samples show similar 2θ values. These results are consistent with the presence of various intermetallic phases of Al 2 O 3 and Si, which were formed due to the diffusion of reinforcement with Al [23]. The major peak observed at 2θ values of 38.5°and 44.5°corresponds to Aluminum, while five minor peaks corresponding to Aluminum oxide, silicon, and Aluminum were observed at 2θ values of 28.5°, 47°, 65°, 78.5°, and 83°, respectively, with different intensities in miller plane [24].The results indicate that the Aluminum peak was observed in three different planes, namely (0 2 2), (0 0 4), and (0 4 4), while the silicon peak was observed in (2 2 0) plane.…”

“…indicate that the reaction starts at around 560 °C to 642 °C, which shows an exothermic peak. The endothermic peak starts from 642 °C, and this heat loss may be caused by incomplete reactions, a slowdown in the rate of reactions, the large size of the reactant particles, the wall of the crucible absorbing the heat, the atmosphere in the furnace [23] and other factors. The TGA analysis, shown in figure 10(b)), indicates that the actual temperature range for the TGA analysis was 0 °C to 1000 °C and the decomposition of all the samples begins at around 550 °C and is complete by 700 °C.…”

Effect of spent alumina catalyst and date palm fiber ash addition in the development of aluminum based composite

“…According to the XRD analysis, the composite material comprises several phases including Al, Al 2 O 3 , Si, Mg, Mn, and Cu. The incorporation of these phases has led to improved tensile characteristics, toughness, and energy absorption of the composite material, particularly due to the presence of Al 2 O 3 , Si, Mn, and Mg. 19 The major peak at 2θ values of 38.5° and 44.5° represents the presence of aluminum, while the five minor peaks with varying intensities at 2θ values of 28.5°, 47°, 65°, 78.5°, and 83° correspond to silicon, aluminum oxide, and aluminum. 20 Additionally, X-ray diffraction (XRD) analysis of the Al/4.5% SAC/4.5% CAES/1.5% Cr composite revealed the presence of strong components such as Al2O3, CaCO3, and Cr.…”

Composition regulation of composite materials in laser powder bed fusion additive manufacturing

“…Traditional manufacturing methods of PRMMCs mainly include casting [9][10][11] and powder metallurgy [12]. However, these approaches have the disadvantages of high manufacturing costs and the inability to produce parts with high precision and complex structures.…”