This study investigated the effects of pre-deformation reduction and subsequent heat treatment on the microstructure and mechanical properties of Cu-2.5Be alloy. Twin formation mechanism and the strengthening contribution of boundaries and β particles were analyzed and discussed, and the results indicate that the following relative oriented relationship existed between the β and the surrounding α(Cu): (\(11\bar{1}\))α∥(110)β and [011]α∥[001]β. Meanwhile, the main formation mechanism of annealing twins in Cu-2.5Be alloy is “growth accidents.” Pre-deformation can significantly increase the yield strength of Cu-2.5Be alloy while maintaining good plasticity. The analysis of strengthening contributions indicated that the presence of twins and grain boundaries significantly improved the strength and ductility of the Cu-2.5Be alloy.

本研究研究了预变形减少和后续热处理对Cu-2.5Be合金的组织和力学性能的影响。分析和讨论了孪晶的形成机理以及边界和β颗粒的强化作用，结果表明β与周围的α（Cu）之间存在以下相对取向关系：（\（11 \ bar {1} \））α∥（110）β和[011]α∥[001]β。同时，Cu-2.5Be合金中孪晶退火的主要形成机理是“生长事故”。预变形可以显着提高Cu-2.5Be合金的屈服强度，同时保持良好的塑性。强化贡献的分析表明，孪晶和晶界的存在显着提高了Cu-2.5Be合金的强度和延展性。