Effect of Sintering Temperature on High-Entropy Alloy Particle Reinforced Aluminum Matrix Composites via Vacuum Hot-Pressing Sintering

In this paper, Al0.6CoCrFeNi/5052 aluminum matrix composites were prepared at different sintering temperatures (550-700 degrees C) by vacuum hot-pressing sintering. The effects of sintering temperature on composites were studied by testing the morphology, phase composition and mechanical properties of the composites, which were characterized by uniaxial compression experiments, X-ray diffraction, scanning electron microscope, electron probe and nanoindentation. The results show that the prepared composites have high strength and very good ductility with sintering temperature lower than 700 degrees C. When the sintering temperature is above 550 degrees C, the interface layer is formed in the composite material. As the sintering temperature increases, the formation method of the interface layer changes. The generation of the interface layer has a significant effect on the mechanical properties of the composites.