Fabrication of amorphous and high-entropy biphasic composites using high-frequency ultrasonic vibration

With the adoption of a high-frequency ultrasonic vibration method, we successfully fabricated the composites of amorphous and high-entropy alloys. The low-temperature and low-stress method enables us to fabricate composites which unite both crystalline and amorphous properties. Through adjusting the mass ratios of amorphous and high-entropy alloys in the composites, the regulation of the properties of the composites was achieved. Microscopic observations demonstrate that the composites of all proportions exhibit good bonding quality without the existence of pores or cracks. Due to the mixture of amorphous and crystalline phase, the mechanical properties of the composites were optimized compared to that of the pure single-phase materials. Our results provide ideas for the design and fabrication of composite materials containing multiphase and multi-component with specific properties.