The present invention is the production of cold-rolled sheet with improved formability of magnesium alloy at room temperature and whereby the method is made of magnesium alloy to provide a cold-rolled sheet. More specifically, the present invention comprises: (a) magnesium (magnesium) made of sheet material and the steel (steel) made of an alloy of the plate material during rolling jimyeo transverse (TD: transverse direction) comprising a confining member for suppressing the plastic deformation of a preparing a composite sheet; (B) a step of cold rolling the composite sheet; And (c) for producing a magnesium alloy sheet having improved formability cold rolling, the yield strength and tensile strength, comprising the step of separating the cold-rolled sheet made of a magnesium alloy from the cold-rolled composite sheet obtained in the step (b) whereby the improved method and prepared moldability, relates to a magnesium alloy cold-rolled sheet having a yield strength and tensile strength. If the cold rolling of the magnesium alloy plate manufacturing method according to the present invention, there can be produced an improved magnesium alloy plate material at room temperature as well as the moldability, it is possible to manufacture the sheet material through the cold rolling in the conventional magnesium alloy plate prepared does not involve the problems such as cost increase or a complicated process, such as in accordance with hot working, the magnesium alloy plate is produced by the method according to the invention is improved in the room temperature formability automobile, aircraft, etc. widely useful in a variety of art it can be used. ;
展开▼
