Effect Of Rolling Process On Microstructure And Mechanical Properties Of Wrought Magnesium Alloy Sheet

5mm roll casting AZ31magnesium alloy sheet was synchronously hot rolled andwarm rolled, and finally the materials were asynchronously warm rolled with theproportion of1、1.18、1.25、1.37、1.50. The microstructure and XRD macro texturewere analyzed, and the simple tension experiment along the rolling direction was adopted.The results show that:1）Both synchronous rolling and asynchronous rolling can form shear bands in themagnesium alloy sheets. The shear bands all consist of dynamic recrystallization grainsize. The shear bands by synchronous rolled are crossing symmetry, while the shearbands by asynchronous rolled are un-directional, which is quite good for the performanceimprovement of magnesium alloy sheet;2）In200℃, the asynchronous warm rolling can form the dynamic recrystallization,while in150℃, the dynamic recrystallization can not be formed;3）Asynchronous rolling can reduce the basal texture, yield strength and yield radio,improve the elongation and strain hardening exponent. At lower temperature, the basaltexture, yield strength and yield radio will rise and the elongation and strain hardeningexponent will decrease;4）Asynchronous rolling can weaken the magnesium alloy basal texture, while theintensity can not obviously monotone decrease with the increasing of asynchronousproportion;5） Asynchronous warm rolling weakens the magnesium alloy basal texture bydynamic recrystallization and un-directional sheer, and the effect of200℃is better than150℃;The excellent performance of AZ31magnesium alloy sheet is obtained with theyield radio around0.6and strain hardening exponent n around0.2at the same time, theelongation is over20%.