To provide an alloy and a formed article which have excellent mechanical strength, ductility and impact resistance, and have no anisotropy in mechanical properties.
In the method of producing an extrusion material, the crystal grain size and texture thereof are controlled by dynamic recovery and/or dynamic recrystallization in plastic working. A stage where shear stress is applied to an alloy stock in such a manner that the extruding direction is changed by the internal angle of <180° to the side direction at an extrusion ratio of ≥1 in at least two extrusion transport paths is continuously performed for at least twice or more, and the alloy stock is converged to one extrusion port 6 and is extruded. In the example of illustration, the alloy stock 1 is subjected to shear stress in a shear face I in an extrusion transport path 7 and then in a shear face II, and is extruded from the extrusion port 6.
SAITO KOJI
NAGAHORA JIYUNICHI
AZUMA KENJI
AZUMA KENJI
Norio Kagami
Jun Komatsu
Hidetake Komatsu