Mg-Li-RE系合金研究进展

在简要介绍高强轻质Mg-Li合金发展历史的基础上,对Mg-Li合金中含稀土(RE)的Mg-Li-RE系合金的研究情况进行总结。重点介绍Mg-Li-RE三元合金以及含RE的Mg-Li其他系合金的研究进展,叙述了RE对Mg-Li合金结构、性能的影响,指出目前存在的问题,提出下一步工作重点和今后的发展方向。     

Preparation and characterization of Mg-6Li and Mg-6Li-1Y alloys

Mg-6Li and Mg-6Li-1Y (wt.%) alloys were prepared using permanent model casting method, and microstructure and mechanical properties were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), optical microscopy (OM), energy dis-persive spectrometry (EDS), transmission electron microscopy (TEM), etc. The results showed that α-Mg and ?-Li phases existed in both al-loys, and there was also Y-enriched phase in Mg-6Li-1Y alloy. The composition of Y-enriched phase was near to the ma...