334 片ロール駆動圧延によるアルミニウム合金板の集合組織制御(OS 加工による材料の機能創製)

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Large shear deformation was successfully introduced throughout the thickness of 5052 and 3004 aluminum alloy sheets by single-roll drive warm rolling under high friction condition. The shear texture of which main components were {111}<110>, {112}<110> and {001}<110> prevailed throughout the thickness, and typical rolling texture was not observed at any part of thickness. Shear strain was smaller and intensity of shear texture was weaker in 3004 sheet After recrystallization, shear texture became broad and almost random texture prevailed, though weak shear texture components remained. The average r-value of annealed 5052 sheet was about 1.0 which is higher than that of the sheet fabricated by conventional rolling and annealing. The planar anisotropy was also smaller than that by conventional process. The r-value of 3004 sheets also increased by single-roll drive rolling, although the rise in r-value was smaller than 5052 sheets. The single-roll drive rolling is proved to be promising process for fabricating aluminum alloy sheet having excellent formability.
2001-11-02