采用大气熔炼制备0.11Ti和0.21Ti含量Cu-Cr-Ti合金铸坯,经热轧—固溶—冷轧—时效工序制备带材,研究钛添加量和热处理工艺对合金性能和组织的影响.结果表明,采用400℃、8h时效工艺,Cu-0.55Cr-0.11Ti合金具有较好的综合性能,硬度、电导率和抗拉强度分别为125 HV1、72.3％ IACS和517 MPa,采用450℃、4h时效工艺,Cu-0.48Cr-0.21Ti合金具有较好的综合性能,合金硬度、电导率和抗拉强度分别为126 HV1、52.3％ IACS和523 MPa.时效态两种合金在500℃保温1h硬度仍高于初始硬度85％.钛含量提高对时效态Cu-Cr合金的导电性能影响显著,钛含量从0.11％提高至0.21％,峰值时效态合金的电导率降低28.4％,钛含量对合金硬度和强度的影响不大.铬在Cu-Cr-Ti合金中的主要存在形式为第二相粒子,钛的主要存在形式为溶质原子,立方相的形成是合金高温性能提高的主要原因.
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