Research Progress of Wrought Magnesium Alloy Rolling Forming
ZHAO Leijie1,2, MA Lifeng1,2,*, HAN Tingzhuang3, FAN Qinhong1
1 School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China 2 Heavy Machinery Engineering Research Center of the Ministry Education, Taiyan University of Science and Technology, Taiyuan 030024,China 3 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
Abstract: ith the acceleration of industrialization, materials with high comprehensive performance are increasingly favored by domestic and foreign researchers. Magnesium alloy is the lightest structural material and has the advantages of high specific strength and stiffness, it has attracted more and more attention in the fields of vehicle, aerospace and other fields. When the traditional casting and die casting processes are used to produce magnesium alloy, its comprehensive properties are limited due to the common defects in the casting process, which often fail to meet the requirements of industrial production. Continuous production of magnesium alloy plates can be achieved through rolling and the comprehensive properties of magnesium alloy plates can be improved. However, as magnesium alloy is a special crystal structure material with hexagonal close pack, the independent slip system is less than other crystal structure materials with body centered cubic and face centered cubic, which leads to the poor formability of magnesium alloy plates in the rolling deformation process and after rolling,which is mainly reflected in: (1) edge crack is easy to occur in the rolling process; (2) after rolling, the elongation and strength properties of the plates are not significantly improved; (3) after rolling, it is not easy to obtain the plates with excellent combination of high strength and high plastic properties. At present, domestic and foreign researchers mainly improve the formability of magnesium alloy plates by three kinds of nine rolling processes: (1) high speed rolling, on-line heating rolling, vertical rolling, cross rolling-suppress edge cracking; (2) differential speed rolling, cross-roll rolling, equal channel angular rolling-additional shear force for rolling weakens the basal texture; (3) accumulative roll bonding, hard-plate rolling-fine grain, improve strength and obtain high plasticity. The paper mainly from the magnesium alloy plates edge crack suppression, weakening basal texture, grain refinement as a starting point, in order to improve the formability of magnesium alloy as the research direction, the effects of the above nine rolling processes on microstructure, texture evolution and deformation mechanism of magnesium alloy plates and the defect of magnesium alloy plates were optimized and the formability was improved. Meanwhile, the research direction of the future rolling deformation of magnesium alloy is prospected, which provides a reference for obtaining the magnesium alloy plate with no edge crack, high strength and high plastic alloy plates.
赵磊杰, 马立峰, 韩廷状, 范沁红. 变形镁合金轧制成形研究进展[J]. 材料导报, 2020, 34(21): 21135-21145.
ZHAO Leijie, MA Lifeng, HAN Tingzhuang, FAN Qinhong. Research Progress of Wrought Magnesium Alloy Rolling Forming. Materials Reports, 2020, 34(21): 21135-21145.
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2020, Vol. 34 
