采用光学金相显微镜、维氏硬度计及拉伸试验机,研究了不同均匀化处理工艺对2524铝合金微观组织及硬度的影响规律。结果表明,随着均匀化退火温度的升高,非平衡第二相充分溶入基体;2524铝合金在485℃/36 h均匀化处理后,晶内偏析基本消除,晶间组织分布均匀,且处理后合金硬度增加,抗拉强度为485 MPa,伸长率达13.5%,表现出较高强度和塑性。 Using optical microscope, Vickers hardness tester and tensile tester, the effect of different homogenization process on the microstructure and hardness of 2524 aluminum alloy was studied. The results show that the unbalanced second phase fully dissolves into the matrix as the homogenization annealing temperature increases. After being homogenized at 485 ℃ for 36 h, the intragranular segregation is basically eliminated and the intergranular structure is evenly distributed. After treatment, the hardness of the alloy increased, the tensile strength was 485 MPa, the elongation was 13.5%, showing higher strength and plasticity.