| 退火工艺对Al-Zr-Er系高导铝合金组织和性能的影响 |
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| 引用本文： | 周泽宇,肖翔,郑志凯,陈保安,徐静,夏霏霏.退火工艺对Al-Zr-Er系高导铝合金组织和性能的影响[J].金属热处理,2021,46(9):108-115. |
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| 作者姓名： | 周泽宇 肖翔 郑志凯 陈保安 徐静 夏霏霏 |
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| 作者单位： | 1.中铝材料应用研究院有限公司, 北京 102209;2.全球能源互联网研究院有限公司先进输电技术国家重点实验室, 北京 102209;3.远东电缆有限公司, 江苏 宜兴 214257 |
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| 基金项目： | 北京市科委项目(Z181100005218002) |
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| 摘 要： | 采用硬度计、电导率测试仪、扫描电镜(SEM)研究了退火工艺对水冷铜模制备的Al-Zr-Er合金组织和性能的影响规律。结果表明:Er元素添加量由0增加至0.30wt%,Al-Zr-Er合金内的初生Al(Fe,Er)相逐渐增多,在退火过程中则会析出大量纳米级Al3(Zr、Er) 相。在等时退火过程中,硬度和电导率会形成两个峰值位置,即300~400 ℃的Al3Er析出峰和500~550 ℃位置的Al3(Zr,Er) 粒子析出峰;退火工艺中,多级退火可以更充分形成核壳结构Al3(Zr,Er)粒子,硬度提升显著;三级退火过程中固溶在基体内的Zr、Er元素析出更充分,电导率提升最显著。成分方面,在Al-0.10Zr-xEr合金中,添加0.15wt%Er表现出更优越的综合性能;在Al-yZr-0.15Er合金中添加Zr元素虽然会提高合金硬度,但由于Zr元素析出不充分带来电导率的损失。
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| 关 键 词： | Al-Zr-Er合金 导体材料 退火工艺 微观组织 性能 |
| 收稿时间： | 2021-04-26 |
Effect of annealing process on microstructure and properties of Al-Zr-Er high conductivity aluminum alloy |
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| Zhou Zeyu,Xiao Xiang,Zheng Zhikai,Chen Baoan,Xu Jing,Xia Feifei.Effect of annealing process on microstructure and properties of Al-Zr-Er high conductivity aluminum alloy[J].Heat Treatment of Metals,2021,46(9):108-115. |
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| Authors: | Zhou Zeyu Xiao Xiang Zheng Zhikai Chen Baoan Xu Jing Xia Feifei |
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| Affiliation: | 1. Chinalco Materials Application Research Institute Co., Ltd., Beijing 102209, China;2. State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co., Ltd., Beijing 102209, China;3. Far East Cable Co., Ltd., Yixing Jiangsu 214257, China |
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| Abstract: | Effect of annealing process on microstructure and properties of the Al-Zr-Er alloy prepared by water-cooled copper mold was studied by means of hardness tester, electrical conductivity gauge and scanning electron microscope. The results show that when the addition amount of Er increases from 0 to 0.30wt%, the primary Al (Fe,Er) phase in the Al-Zr-Er alloy increases gradually, and a large number of nano-sized Al3 (Zr,Er) particles are precipitated during annealing. During the isochronous annealing process of Al-Zr-Er alloy, hardness and electrical conductivity exist two peak positions. The first peak is at 300-400 ℃ which represents the precipitation process of Al3Er and the second peak is Al3(Zr, Er) at 500-550 ℃ .In the annealing process, multi-stage annealing can more fully form Al3 (Zr, Er) particles of core-shell structure, and the hardness is improved significantly. During the three-stage annealing process, Zr and Er elements in the matrix are more fully precipitated, and the conductivity is the highest. In terms of composition, the addition of 0.15wt%Er in the Al-0.10Zr-xEr alloy shows better comprehensive properties. Although adding Zr element to Al-yZr-0.15Er alloy will increase the hardness of the alloy, the insufficient precipitation of Zr element will lead to the loss of electrical conductivity. |
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| Keywords: | Al-Zr-Er alloy conductor material annealing process microstructure properties |
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