抄録
It is well known that sheet forming of magnesium alloys is inferior in comparison with other metal sheets. In this research, in order to examine bending, stretching, formability and drawability of AZ31 magnesium alloy sheets, the effects of rolling conditions of the sheet were investigated by the model experiments. The hot rolled sheet with reduction of 1 pass 30~50% at the high temperature showed good value. Furthermore, various properties were improved by final annealing temperature of the alloy sheet. In the bending test, the ratio of radius (R) to thickness (t) for the rolled sheet showed the value of 2 in final annealed temperature at 573–673K. In the stretching test, the best biaxial deformation limit was obtained in the 50% hot rolled sheet after annealed at 623 K. In the drawing test, the sheet of LDR showed the value of 1.7 in the 30% and 50% hot rolled sheets after annealed at 573 K. These results implied that good formability of AZ31 magnesium alloy sheet was obtained by selecting proper rolling conditions.
