The Cu–Cr–Ti alloys with different Ti contents were prepared by vacuum induction melting, solid solution, cold deformation, and ageing treatment. The microstructures, mechanical, and electrical properties of Cu–Cr–Ti alloys were investigated under different Ti contents. The results indicate that the increase of Ti content can improve the mechanical properties of Cu–Cr–Ti alloys, whereas its conductivity decreases significantly. After cold rolling by 80% and ageing at 500°C for 60 min, the Cu-0.3Cr-0.05Ti alloy with the hardness, electrical conductivity, and tensile strength are 162.6 HV, 82.2% IACS, and 510 MPa, respectively. The strengthening mechanism of the studied alloys is mainly attributed to the Orowan precipitation and dislocation strengthening. The addition of Ti in the ageing process can retard the growth and coarsen Cr precipitates.

通过真空感应熔炼、固溶、冷变形和时效处理制备了不同Ti含量的Cu-Cr-Ti合金。研究了不同 Ti 含量下 Cu-Cr-Ti 合金的显微组织、力学和电学性能。结果表明，Ti含量的增加可以改善Cu-Cr-Ti合金的力学性能，而其导电性显着降低。Cu-0.3Cr-0.05Ti合金经80%冷轧和500°C时效60 min后，硬度、电导率和抗拉强度分别为162.6 HV、82.2% IACS和510 MPa。所研究合金的强化机制主要归因于 Orowan 析出和位错强化。在时效过程中添加 Ti 可以延缓 Cr 析出物的生长和粗化。