(Key Laboratory for Anisotropy and Texture of Materials Ministry of Education, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China)
In recent years, with the energy and environmental problems being gradually serious, the research on Mg alloy, which is one of the representatives of lightweight alloys, has received greatest attention. In particular, low-alloyed Mg alloy has attracted wide attention from scholars at home and abroad due to their excellent processing properties, high corrosion resistance, low cost (density) and improved ductility. However, it is always a great challenge to achieve high absolute-strength for this low-alloyed Mg alloy to satisfy the requirement for the practical applications, high-strength and low-alloyed magnesium alloy can further broaden the application scope of Mg alloy. In this regard, the research progress of high-strength and low-alloyed Mg alloy in recent years is reviewed in this paper. The strengthening and toughening mechanism of high-strength and low-alloyed Mg alloys in different alloying systems are comprehensively analyzed, and the development direction of high-performance and low-alloyed Mg alloy is prospected.