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采用电场固溶和时效成形复合工艺对7050铝合金薄板进行处理,用Thomas-Fermi理论重点研究了外加静电场对7050铝合金时效成形后回弹率及力学性能的影响。结果表明:随着电场固溶强度的增加,时效成形件的回弹率被影响程度较明显。当固溶电场强度为1.7 kV/cm时,时效成形薄板件的回弹率最小,为15.81%,与未经电场固溶的时效成形件相比,静电场固溶有助于降低其回弹率,而电场固溶能大幅度提高时效成形件的伸长率,但对其抗拉强度和硬度值的影响不大。
The 7050 aluminum alloy sheet was treated by electric field solid solution and aging forming composite process. The influence of applied electrostatic field on the springback rate and mechanical properties of 7050 aluminum alloy after aging was studied by Thomas-Fermi theory. The results show that with the increase of the electric field solid solution strength, the rebound rate of the aged part is obviously affected. When the solution electric field strength is 1.7 kV / cm, the springback of the sheet is the smallest, which is 15.81%. Compared with the time-hardened sheet without solution hardening, the solid solution of the electrostatic field helps to reduce the springback Rate, and electric field solid solution can greatly improve the elongation of the aging of the shape, but its tensile strength and hardness values of little effect.