| Abstract Scope |
Among lightweight metals, magnesium alloys have attracted significant attention as environmentally friendly materials due to their low density, high specific strength, excellent damping capacity, and superior recyclability. However, conventional commercial magnesium alloys, which possess a hexagonal close-packed (HCP) crystal structure, suffer from poor formability at room and low temperatures. This limitation leads to increased manufacturing costs and product defects, restricting their broader application. To address these challenges, ultra-lightweight Mg-Li have been developed. The addition of lithium not only further reduces the alloy's density but also transforms the crystal structure from HCP to body-centered cubic (BCC), thereby significantly improving formability. Nevertheless, the incorporation of lithium, while reducing density, also markedly decreases the alloy's strength, highlighting the need for novel high-strength Mg-Li alloys. In this study, we investigated the enhancement of mechanical strength in Mg-Li alloys by optimizing lithium content, alloying elements, and microstructural control. |