Rolling method for improving moldability of metal having face-centered cubic structure

摘要

The present invention improves the formability by increasing the average plastic deformation ratio of the metal by differently rolling the metal having the face centered cubic structure. To this end, the present invention increases the frictional resistance between the alloy sheet material and the rolling roll during the rolling of an alloy sheet material having a face-centered cubic structure, so that the shear aggregate structure is well developed during the deformation during rolling so that an alloy sheet material . In other words, since the friction resistance is increased by varying the size, rotation speed, and rotation direction of the relative rolling roll irrespective of the composition ratio or the number of elements added to the alloy during the rolling of the alloy sheet material having the face-centered cubic structure, In addition to the above-mentioned methods, in addition to the above-mentioned methods, a ceramic powder is applied between the alloy sheet and the rolling roll to increase frictional resistance, or the alloy sheet is hot-rolled and then heat-treated to obtain a (111) Well-developed.