| 摘要 |
An aluminum base alloy wrought product having an isotropic texture and a process for preparing the same. The product has the ability to develop improved properties in the 45<o> direction in response to an aging treatment and is comprised of 0.5 to 4.0 wt.% Li, 0 to 5.0 wt.% Mg, up to 5.0 wt.% Cu, 0 to 1.0 wt.% Zr, 0 to 2.0 wt.% Mn, 0 to 7.0 wt.% Zn, 0.5 wt.% max. Fe, 0.5 wt% max. Si, the balance aluminum and incidental impurities. The product has imparted thereto, prior to a hot rolling step, a recrystallization effect to provide therein after hot rolling a metallurgical structure generally lacking intense work texture characteristics. After an aging step, the product has improved levels of properties in the 45<o> direction. Figure 1 shows that the relationship between toughness and yield strength for a worked alloy product in accordance with the present invention is increased by stretching. |
