Deformation behavior, microstructure and mechanical properties of Al–Cu–Yb(Gd)–Mg–Mn–Zr alloy sheets are investigated. Based upon results of processing maps, optimum regimes for thermomechanical treatment at temperatures of 490–540°C and speeds of 0.01–1 sec^–1 are determined. Annealing of cold-rolled sheets at temperatures up to 180°C leads to predominance of a strengthening effect due to aging over weakening from polygonization. Annealing of alloy sheets for 1 h at 400°C forms a partly recrystallized structure with a clear reduction in hardness from 145 HV to 75 HV. After 2 hours of annealing at 150°C, alloy combines a high yield strength of 412–417 MPa, a tensile strength of 441–449 MPa, and a good relative elongation of 2.7–3.2%. Sheet hardening followed by aging makes it possible to increase ductility by up to 5–8%, while the yield strength is 300–306 MPa with tensile strength of 364–389 MPa.

研究了 Al-Cu-Yb(Gd)-Mg-Mn-Zr 合金板材的变形行为、显微组织和力学性能。根据加工图的结果，确定了在 490–540°C 温度和 0.01–1 sec ^{–1速度下进行热机械处理的最佳方案。}冷轧板在高达 180°C 的温度下进行退火，由于时效超过多边形化造成的弱化，导致强化效果占主导地位。合金板在 400°C 下退火 1 小时形成部分再结晶结构，硬度从 145 HV 明显降低至 75 HV。经过 150°C 2 小时退火后，合金具有 412-417 MPa 的高屈服强度、441-449 MPa 的抗拉强度和 2.7-3.2% 的良好相对伸长率。板材硬化后进行时效可将延展性提高 5-8%，屈服强度为 300-306 MPa，拉伸强度为 364-389 MPa。