Large deformation apparatus, the deformation method and the deformed metallic materials

摘要

The present invention relates to a large deformation apparatus for metal-based materials that comprises a mold A, a support mechanism B for supporting the mold A, and a rotary mechanism C for rotating the mold A, wherein the mold A comprises a mold body 1, four holes 2 that pass through the mold body 1 and intersect in its interior, and engagement means 3a for engaging the rotary mechanism C, each hole 2 being provided with a punch 5 that can slide or otherwise move with friction in relation to the hole 2 and that extends from the end face of the mold body 1 to the intersection of the holes 2; the support mechanism B comprises restraint plates 6a, 6b, and 6c for restraining the external end faces of the mold body 1 having holes 2, and holding plates 7a and 7b for holding the mold body 1; and the rotary mechanism C comprises engagement means 3b for engaging the engagement means 3a, rotary means 8, connection means 9 for connecting the engagement means 3b and the rotary means 8, and to a method for applying large deformation to a metal-based material with the aid of the apparatus, and further to a metal-based material subjected to large deformation by the method.