| 摘要 |
PURPOSE: To provide a method for forming aluminum alloy sheet using texture control to solve a forming anisotropy problem due to$û001$ý<100> cubic texture generated after rolling and heat treatment processes of aluminum alloy sheet by varying frictional coefficient according to asymmetrical rolling and lubrication of upper and lower rolls, thereby developing textures different in a thickness direction of the aluminum alloy sheet. CONSTITUTION: The method for forming an aluminum alloy sheet is characterized in that the aluminum alloy sheet(20) is rolled by an asymmetrical rolling mill(10) in such a way that a rotary cubic texture is developed at portions having a high frictional coefficient of the rolls due to the non-lubrication state, and a beta(β)-fiber texture is developed at portions having a low frictional coefficient of the rolls due to the lubrication state by varying circumferential rotary speeds(V1,V2) of an upper roll(11) and lower roll(12) of the asymmetrical rolling mill and varying frictional coefficient of the rolls according to whether or not a lubricant is applied to the rolls at the same time.
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