超细金属间化合物颗粒增强Mg-Li基复合材料研究进展

Progress in Research of Ultrafine Intermetallic Compound Particles Reinforced Mg-Li Matrix Composites

颗粒增强Mg-Li基复合材料作为一种新型的超轻结构材料,以其高的比强度、比刚度,良好的阻尼减震及电磁屏蔽性,在航天航空领域与交通运输、电子包装、体育用品等民用领域具有广阔应用的前景。从复合材料的组织表征、力学性能、制备方法及加工工艺等方面,概述了超细金属间化合物颗粒增强Mg-Li基复合材料制备技术的进展和研究状况;阐述了超细金属间化合物颗粒增强Mg-Li基复合材料的界面及强韧化机制,着重介绍了包含过渡型界面层与强化机制的模型计算,及其在金属间化合物增强Mg-Li基复合材料中的实验验证,并结合模型探讨了金属间化合物增强Mg-Li基复合材料的断裂模式及机制;最后,结合目前发展中所面临的机遇和问题,展望了超细颗粒增强Mg-Li基复合材料的未来方向及发展趋势。

Particles reinforced Mg-Li matrix composites, as an emerging super light structural metallic material, have been expected to be widely used in aerospace and civil fields, such as transportation, electronics packaging and sports in- dustry for their high specific strength and specific stiffness, good damping and electromagnetic shielding properties. First- ly, the research status of ultrafine intermetallic compound particles reinforced Mg-Li matrix composites including applica- tions, microstructures, mechanical properties and processing technologies were summarily related. Secondly, the progress in the research of ultrafine intermetallic compound particles reinforced Mg-Li matrix composites were expounded. Especially for the simulation model incorporating transition interface layer and strengthening mechanism, their test verification in ultrafine compound particles reiforced Mg-Li matrix composites were emphatically introduced. Finally, the prospects on the research direction and development tendency of uhrafine intermetallic compound particles reinforced Mg-Li matrix compos- ites were expected based on the opportunities and problems in future.