| 杨晶晶,彭振波,张柯,陈小红,刘平.时效处理对Cu-Cr-Ti合金组织与性能的影响[J].有色金属材料与工程,2021,42(1):17-22,38. |
| 时效处理对Cu-Cr-Ti合金组织与性能的影响 |
| Effect of Aging Treatment on the Structure and Properties of Cu-Cr-Ti Alloy |
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| DOI：10.13258/j.cnki.nmme.2021.01.003 |
| 中文关键词: Cu-Cr-Ti合金 时效处理 微观组织 力学性能 导电率 |
| 英文关键词:Cu-Cr-Ti alloy aging treatment microstructure mechanical properties electrical conductivity |
| 基金项目:国家重点研发计划资助项目(2017YFB0306405) |
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| 摘要点击次数: 2051 |
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| 中文摘要: |
| 由于高强、高导Cu-Cr-Zr合金在工业化生产熔炼时不易控制Zr的收得率，通过采用Ti替代Zr，以期获得易熔炼以及性能与Cu-Cr-Zr合金相当的时效强化型Cu-Cr-Ti合金。采用真空感应熔炼技术，经过热锻、固溶、冷轧、时效共4道工序，制备了Cu-Cr-Ti合金板材；对时效后的Cu-Cr-Ti合金的组织状态、析出相形态、析出相与基体的界面关系进行了分析；对合金的抗拉强度和导电率进行了测试。结果表明：450 ℃时效60 min后，Cu-0.45Cr-0.14Ti合金的综合性能最佳，抗拉强度和导电率分别达到620 MPa和64.9 %IACS；Cu-0.45Cr-0.14Ti合金中纳米尺寸的Cr强化相呈现椭圆形和双花瓣形，2种形状的析出相粒子均为面心立方结构，且均与基体保持完全共格关系。 |
| 英文摘要: |
| Since it is not easy to control the yield of Zr in high-strength and high-conductivity Cu-Cr-Zr alloys during industrial production and smelting, Ti is used to replace Zr in order to obtain age-reinforced Cu-Cr-Ti alloys which are easy to melt and has the same properties as Cu-Cr-Zr alloys. The Cu-Cr-Ti alloy ingots were prepared by vacuum induction melting. The Cu-Cr-Ti alloy sheet were obtained by four processes including hot forging, solid solution, cold rolling and aging. The microstructure, morphology of precipitates and interface between precipitates and matrix of Cu-Cr-Ti after aging were analyzed. The tensile strength and electrical conductivity of the alloy were tested. The results indicate that after aging at 450 ℃ for 60 min, Cu-0.45Cr-0.14Ti alloy shows the best comprehensive properties. The tensile strength and conductivity are 620 MPa and 64.9 %IACS, respectively. The nano-sized Cr-strengthened phases in Cu-0.45Cr-0.14Ti alloy are elliptical and double petal-shaped. The precipitated particles with two shapes are both fcc structure maintaining a completely coherent relationship with the matrix. |
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