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基于静电场固溶处理制坯为铝合金时效成形提供了一种新的方法。为评价该工艺的可行性,研究了不同电场强度对2A12铝合金时效成形的影响,探索了在不同固溶电场强度下的时效成形性与普通固溶处理后时效成形的差异,对处理后的2A12铝合金试件进行力学性能测试与显微组织分析。结果表明:电场固溶处理+时效成形对2A12铝合金的组织和性能有一定的影响,较普通固溶处理+时效成形表现出良好的成形性和伸长率;随着电场强度的增加回弹率逐渐降低,韧窝数量增加且尺寸增大;在固溶时施加5.2 k V·cm-1的电场强度可以促进第二相的溶解,导致Cu Al2析出相的比重增大。
Based on the solution treatment of the electrostatic field, the blank provides a new method for the aging forming of the aluminum alloy. In order to evaluate the feasibility of the process, the effects of different electric field intensities on the aging forming of 2A12 aluminum alloy were studied. The differences between the aging formability at different solution electric field strengths and the aging forming after ordinary solution treatment were explored. 2A12 aluminum alloy specimens for mechanical properties testing and microstructure analysis. The results show that the solution treatment and aging treatment have certain influence on the microstructure and properties of 2A12 aluminum alloy, and show better formability and elongation than the conventional solution treatment + aging forming. With the increase of electric field strength, the rebound rate The number of dimples increases and the size increases. Applying a field strength of 5.2 kV · cm-1 can promote the dissolution of the second phase and increase the specific gravity of the precipitated CuAl2 phase.