Severely segregated Al₂Cu coarse second-phase particles (CSPPs) and uneven mechanical properties are the main problems in the manufacturing process of 2219 aluminum alloy large rings. A new method for the control of the three-dimensional mechanical properties (TDMPs) of the rings is proposed in the present study. The evolution law of the Al₂Cu particles and the regulation mechanism of the TDMPs were investigated. The research revealed that optimizing the warm compression and rolling deformation can effectively reduce the quantity of CSPPs and regulate the TDMPs. With the increase of compression deformation (from 30% to 70%), the degree of the crushing and passivation of CSPPs was found to increase, the area fraction of the CSPPs decreased by 72.6%, and their roundness factor increased from 0.694 to 0.845; in the compression deformation process, high-density dislocations can effectively promote the crushing, dissolution and diffusion of Al₂Cu particles, thereby enhancing the precipitation driving force of the strengthening phase during aging, resulting in a 99% increase in the quantity of the θ′ phase. When the compression deformation was 20% at 510 °C and 50% at 240 °C, the tensile strength, yield strength, and elongation of the ring in the radial direction were found to increase from 392 MPa, 287 MPa, and 6.4% to 468 MPa, 358 MPa, and 11.2%, respectively; moreover, the anisotropies of the three indicators of the rings were reduced by 32.6%, 54.0%, and 38.9%, respectively.

严重偏析的Al ₂ Cu粗大第二相颗粒（CSPPs）和不均匀的机械性能是2219铝合金大环制造过程中的主要问题。本研究提出了一种控制环的三维机械性能的新方法。Al ₂的演化规律研究了铜颗粒和TDMPs的调控机理。研究表明，优化热压缩和轧制变形可有效减少CSPP的数量并调节TDMP。随着压缩变形的增加（从30％增加到70％），CSPP的破碎和钝化程度增加，CSPP的面积分数减少72.6％，其圆度系数从0.694增加到0.845。在压缩变形过程中，高密度位错可以有效地促进Al ₂的破碎，溶解和扩散Cu颗粒，从而在时效过程中增强了增强相的析出驱动力，导致θ'相的量增加了99％。当压缩变形在510°C时为20％，在240°C时为50％时，发现环的抗拉强度，屈服强度和径向伸长率从392 MPa，287 MPa和6.4％增加至分别为468 MPa，358 MPa和11.2％; 此外，环的三个指标的各向异性分别降低了32.6％，54.0％和38.9％。