Patent ID: 7666351

Claim:
A method of producing a magnesium-alloy material, the method comprising: (a) a casting step for obtaining a cast material by supplying a molten magnesium alloy to a continuous casting apparatus provided with a movable casting mold; and (b) a rolling step for performing an area-reducing operation by supplying the cast material to one member selected from the group consisting of at least one roll group and at least two pairs of rolls; in the rolling step, pressure being applied to the cast material using the rolls from at least three directions in the cross section of the cast material, wherein the rolling step is performed immediately after the casting step as a continuous step and the method is performed such that structure of the magnesium-alloy material becomes any one of a hot-rolled structure; a mixed structure composed of a hot-rolled structure and a recrystallized structure, and a recrystallized structure, wherein in the rolling step, the rolling operation is performed by using a first pair of rolls having first rotation axes and a second pair of rolls having second rotation axes, and the first rotation axes are perpendicular to the second rotation axes so that the first pair of rolls applies pressure to the cast material from first two directions and the second pair of rolls applies pressure to the cast material from second two directions perpendicular to the first two directions.