Abstract
Abstract Magnesium-based composites are promising materials that can achieve higher strength, modulus, stiffness, and wear resistance by using metals, ceramics, and nanoscale carbon-based materials as reinforcements. In the last few decades, high-performance magnesium-based composites with excellent interfacial bonding and uniformly distributed reinforcements have been successfully synthesized using different techniques. The yield strength, Young’s modulus, and elongation of SiC nanoparticle-reinforced Mg composites reached ∼710 MPa, ∼86 GPa, and ∼50%, respectively, which are the highest reported values for Mg-based composites. The present work summarizes the commonly used reinforcements of magnesium composites, particularly nano-reinforcements. The fabrication processes, mechanical properties, reinforcement dispersion, strengthening mechanisms, and interface optimization of these composites are introduced, and the factors affecting these properties are explained. Finally, the scope of future research in this field is discussed.
Highlights
In recent years, new energy vehicles and the aerospace industry have been facing a constant requirement to improve energy efficiency through the weight reduction of their components
The ball-milling method can significantly improve the aggregation of carbon nanosheets (CNSs)
The results showed that a nanoscale contact interface and diffused bonding interface formed between the carbon nanotubes (CNTs) and
Summary
New energy vehicles and the aerospace industry have been facing a constant requirement to improve energy efficiency through the weight reduction of their components. As structural materials, their inherently low elastic modulus and strength restrict their extensive utilization in critical engineering applications [16,17] For this reason, many researchers have used traditional strengthening methods (solid-solution strengthening, precipitation strengthening, fine-grain strengthening, and work hardening) to improve the performance of Mg alloys for many years. Uniform distribution of the reinforcements, good interfacial bonding, and fine Mg matrix grains are prerequisites that need to be addressed to achieve Mg-based composites with excellent mechanical properties. Current research hotspots include the influence of the type, volume fraction, and size of the reinforcements, reasonable fabrication processes, and interface optimization treatment on the microstructure and mechanical properties of Mg-based composites. The current problems, as well as directions for future development of Mg-based composites, are offered from the authors’ perspective
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