Wrought Magnesium Alloy Sheets: A Comprehensive Review of Rolling Processes

Driven by energy conservation, emission reduction and lightweight manufacturing demands, wrought magnesium alloys feature low density, high specific strength and balanced comprehensive performances, making them promising lightweight materials for aerospace, automobile, electronic and other industries. This paper systematically reviews the rolling fabrication technologies and recent research progress of wrought magnesium alloy sheets. Special attention is paid to deformation characteristics, microstructure evolution mechanisms and property regulation rules of typical rolling processes, including conventional rolling, cross rolling, accumulative roll bonding, equal-channel angular rolling, asymmetric rolling and twin-roll casting. Existing studies confirm that dynamic recrystallization, grain refinement, activation of non-basal slips and basal texture weakening act as core mechanisms to enhance the strength–ductility matching, formability and anisotropy of magnesium alloy sheets. Each rolling technology possesses unique merits in production efficiency, microstructural homogeneity, texture modification and industrial practicability. Nevertheless, several bottlenecks still restrict its large-scale promotion, such as edge cracking, strong basal texture, poor process stability and high manufacturing cost. Future research priorities lie in multi-process compound forming, intelligent parameter control and short-process eco-friendly manufacturing, so as to facilitate mass production and extensive engineering application of high-performance wrought magnesium alloy sheets.