金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 125-132.DOI: 10.13251/j.issn.0254-6051.2021.08.024

• 工艺研究 • 上一篇    下一篇

固溶时效处理对8030铝合金导线组织性能的影响

韩茜1,2, 李茂扬1, 秦国飞1, 李旭东1, 董超1, 张美丽1,2, 代卫丽1,2   

  1. 1.商洛学院 化学工程与现代材料学院 陕西省尾矿资源综合利用重点实验室, 陕西 商洛 726000;
    2.商洛学院 陕西省矿产资源清洁高效转化与新材料工程研究中心, 陕西 商洛 726000
  • 收稿日期:2021-03-24 出版日期:2021-08-25 发布日期:2021-12-09
  • 作者简介:韩 茜(1988—),女,讲师,硕士,主要研究方向为轻合金的热处理强化,E-mail:haohi2010@qq.com
  • 基金资助:
    商洛学院科学研究项目(18SKY018);陕西省自然科学基础研究计划(2019JQ-156);商洛市高性能有色金属制备与加工技术创新团队(SK2019-75)

Effect of solution treatment and aging on microstructure and properties of 8030 aluminum alloy conducting wire

Han Xi1,2, Li Maoyang1, Qin Guofei1, Li Xudong1, Dong Chao1, Zhang Meili1,2, Dai Weili1,2   

  1. 1. Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Department of Chemical Engineering and Modern Material, Shangluo University, Shangluo Shaanxi 726000, China;
    2. Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials, Shangluo University, Shangluo Shaanxi 726000, China
  • Received:2021-03-24 Online:2021-08-25 Published:2021-12-09

摘要: 研究了固溶时效处理对8030铝合金导线组织性能的影响。结果表明,未经热处理的8030铝合金导线由α-Al、Al6Fe、Al13Cu4Fe3、AlMg2Zn相组成。经过480 ℃固溶处理6 h后,AlMg2Zn相完全溶入基体,Al13Cu4Fe3相及Al6Fe相部分溶入基体。再经240 ℃时效处理6 h后,第二相重新析出。经固溶时效处理后,8030铝合金导线的导电率都有所提高,在480 ℃固溶处理6 h,再经240 ℃时效处理6 h后,其导电率最高达56.67%IACS,比未经热处理的合金导电率提高了3.41%。经固溶时效处理后,8030铝合金导线的伸长率显著提高,在480 ℃固溶处理6 h,再经200 ℃时效处理4 h后,伸长率从未经热处理的3.75%提高到31.25%。

关键词: 8030铝合金导线, 固溶时效处理, 显微组织, 导电率, 力学性能

Abstract: Effect of solution and aging treatments on microstructure and properties of the 8030 aluminum alloy wire was studied. The results show that the untreated alloy wire consists of α-Al, Al6Fe, Al13Cu4Fe3 and AlMg2Zn phases. After solution treatment at 480 ℃ for 6 h, the AlMg2Zn phase is completely dissolved into the matrix, while the Al13Cu4Fe3 phase and Al6Fe phase are partially dissolved. After aging treatment at 240 ℃ for 6 h, the second phases are precipitated again. After solution and aging treatments, the conductivity of the 8030 aluminum alloy wire is improved. After solution treated at 480 ℃ for 6 h and then aged at 240 ℃ for 6 h, the conductivity reaches up to 56.67%IACS, which is 3.41% higher than that of the alloy without heat treatment. After solution and aging treatments, the elongation of the alloy wire is significantly increased. When solution treated at 480 ℃ for 6 h and then aged at 200 ℃ for 4 h, the elongation is increased from 3.75% (untreated alloy) to 31.25%.

Key words: 8030 aluminum alloy conducting wire, solution treatment and aging, microstructure, conductivity, mechanical properties

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