热处理对Cu-0.6Cr-0.09Zr-0.08Mg合金特性的影响
Effect of Heat Treatment on Characteristics of Cu-0.6Cr-0.09Zr-0.08Mg Alloy
王 杰, 陈九磅, 赵鹏程, 程银健
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作者单位：(合肥工业大学 材料科学与工程学院, 安徽 合肥 230009)
中文关键字：Cu-Cr-Zr； 时效； 析出； 第二相粒子
英文关键字：Cu-Cr-Zr; aging; precipitation; second-phase particle
中文摘要：研究时效对Cu-0.6Cr-0.09Zr-0.08Mg合金性能的影响，并从微观角度分析了合金的强化机理和导电率提高的原因。结果表明，经固溶后的合金在420 ℃时效3 h，硬度达到最大值(81 HRB)，导电率达到76.5%IACS。金相组织和扫描电镜研究表明，处理后的合金有第二相的析出和大量的孪晶，从而使合金在保证有较高硬度的同时，导电率又能保持在一较高水平。
英文摘要：The effects of aging process on performance of Cu-0.6Cr-0.09Zr-0.08Mg alloy were studied. The strengthening mechanism and the reasons of increasing conductivity were analyzed. The results show that the alloy after aging at 420 ℃ for 3 h, the hardness reaches the maximum 81 HRB, conductivity 76.5%IACS. Metallography and SEM results show that the treatmented alloy has a second phase precipitation and large numbers of twin crystal, while make the alloy hardness higher, meanwhile, the conductivity remains at a high level as well.