Shaohui Shi, Wenpeng Yang, Shaohui Shi
Mg-Sn alloys, as a classical precipitation-strengthened system, exhibit enhanced tensile strength and creep resistance at elevated temperatures due to the thermally stable Mg2Sn phase. Compared with expensive Mg-RE-based alloys, Mg-Sn alloys are promising low-cost alternatives for high-strength heat-resistant wrought magnesium applications. Recent advancements in thermomechanical processing and alloying element additions have significantly optimized their mechanical properties, expanding their engineering potential. This review systematically summarizes the research progress of Mg-Sn-based alloys, focusing on the mechanisms by which alloying elements (e.g., Ca, Zn, Al, RE) modify microstructures and enhance mechanical performance. Future research directions are proposed to guide the design and development of high-performance Mg-Sn alloys.
Magnesium alloy; Alloying element; Precipitation strengthening; Creep resistance; Microstructure