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采用拉伸力学性能测试、电导率测量、金相和透射电镜技术研究不同冷变形下时效处理对Cu-1.0Cr-0.1Zr合金性能的影响。结果表明:Cu-1.0Cr-0.1Zr合金在950℃×1h固溶处理+70%冷变形+450℃×4h时效后的综合性能最好,其抗拉强度、屈服强度、伸长率和电导率分别达到543.3MPa、522.3MPa、12.68%和82.6%IACS。从合金的显微组织观察分析中可知,在此工艺下合金基体中析出了大量弥散细小的强化相,第二相析出是合金强化的重要原因。
The effects of aging treatment on the properties of Cu-1.0Cr-0.1Zr alloy under different cold deformations were investigated by tensile mechanical testing, conductivity measurement, metallography and transmission electron microscopy. The results show that the Cu-1.0Cr-0.1Zr alloy has the best comprehensive properties after solution treatment at 950 ℃ for 1h + 70% cold deformation + 450 ℃ for 4h, and its tensile strength, yield strength, elongation and electrical conductivity Rates reached 543.3 MPa, 522.3 MPa, 12.68% and 82.6% IACS, respectively. It can be seen from the microstructure observation and analysis of the alloy that a large number of finely dispersed and enhanced phases are precipitated in the alloy matrix during the process, and the precipitation of the second phase is an important reason for the alloy strengthening.