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通过力学性能表征、光学显微镜和SEM电镜观察结合EDS分析,对AlMg6Mn合金在剪切旋压过程中的变形行为和微观结构进行研究。将样品在一工业旋压机上进行剪切旋压变形,压下量分别为30%,50%和68%。晶粒在剪切旋压过程中逐渐得到细化。随着压下量的增大,晶粒沿轴向拉长,沿圆周方向收缩。得到了最优的强度和伸长率,这归因于晶粒细化和固溶体中粒子与Mg、Mn原子之间的位错反应。
The deformation behavior and microstructure of AlMg6Mn alloy during shear spinning were investigated by mechanical property characterization, optical microscopy and SEM observation combined with EDS analysis. The samples were spin shear deformed on an industrial spinning machine with 30%, 50% and 68% reduction, respectively. The grains are gradually refined during the shear spinning. As the reduction increases, the grains elongate in the axial direction and shrink in the circumferential direction. The optimum strength and elongation were obtained due to the grain refinement and the dislocation reaction between the particles and the Mg and Mn atoms in the solid solution.