自然时效Al-Cu系合金溶质原子团簇的研究进展

doi:10.11896/cldb.24110026

材料导报

2025, Vol. 39

Issue (20): 24110026-10 https://doi.org/10.11896/cldb.24110026

金属与金属基复合材料

自然时效Al-Cu系合金溶质原子团簇的研究进展

韩静怡, 张鹏^*, 刘刚

西安交通大学材料科学与工程学院,西安 710049

Research Progress of Solute Atomic Clusters in Natural Aging Al-Cu Alloys

HAN Jingyi, ZHANG Peng^*, LIU Gang

School of Materials Science and Engineering, Xi’an Jiaotong University, Xi ’an 710049, China

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摘要人工时效是提高铝合金性能的有效方法,但固溶淬火时效等方法引入的热应力较大,并且存在淬透性等问题,因此工业上提出开发免热处理型铝合金,也就是利用自然时效对合金进行强化处理。自然时效强化可以减少热应力变形,同时省去部分热处理工序,具有降低制造成本、节能减排等优势。合金一般在自然时效阶段形成溶质原子簇,即纳米/亚纳米无序聚集区,由溶质原子在基体内形成。这种团簇强化机制可引起显著的强度提升以及良好的塑韧性,能有效抑制疲劳裂纹扩展,展现出优异的综合性能。近年来得益于三维原子探针、小角散射等表征技术的发展和逐渐完善,自然时效的团簇强韧化的研究逐渐深入。本文着重介绍了自然时效Al-Cu系合金近年来的研究进展,从Al-Cu-Li、Al-Cu-Sn、Al-Cu-Mg三种类型合金的强韧化、微观表征以及应用等多个方面进行了简要总结,同时也对合金自然时效领域未来可能的研究趋势与方向进行了深入的展望。

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	韩静怡
	张鹏
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关键词: Al-Cu系溶质原子团簇自然时效微观表征

Abstract: Artificial aging is an effective way to improve the performance of aluminum alloy, but there are problems such as hardenability, large thermal stress introduced by solution quenching aging and other methods. So the development of heat-treatment-free aluminum alloy are proposed, that is, using natural aging to strengthen the alloy. Natural aging can reduce the thermal stress deformation, while eliminate part of the heat treatment process, which has the advantages of reducing manufacturing costs, energy saving and emission reduction. In the natural aging phase of alloys, solute atomic clusters are generally formed, that is, nanometer/subnanometer disordered aggregation regions formed by solute atoms in the matrix. Cluster strengthening can cause significant strengthening effect and plasticity toughness, and effectively resist fatigue crack propagation, showing excellent comprehensive properties. In recent years, thanks to the gradual improvement and development of three-dimensional atomic probes, small angle scattering and other characterization techniques, the study of natural aging cluster strengthening and toughening has been gradually deepened. In this paper, the research progress of natural aging Al-Cu alloys in recent years was summarized from the aspects of strengthening and toughening, microscopic characterization and application of Al-Cu-Li, Al-Cu-Sn and Al-Cu-Mg alloys, and the possible research directions in the future were prospected.

Key words: Al-Cu series solute atomic clusters natural aging microscopic characterization

发布日期: 2025-10-27

ZTFLH:

TG146.2

基金资助: 国家重点研发计划(2023YFB3712704);国家自然科学基金(52271115)

通讯作者: *张鹏,博士,西安交通大学大学材料科学与工程学院副教授、博士研究生导师。目前主要从事耐热铝合金新材料研发、铝合金团簇强韧化以及位错雪崩&统计物理&临界行为等方面的研究工作。zhangpeng.mse@xjtu.edu.cn

作者简介: 韩静怡,西安交通大学材料科学与工程学院硕士研究生,在刘刚教授和张鹏副教授的指导下进行研究,目前主要研究领域为自然时效Al-Cu-Mg-(Ag)合金溶质团簇演化与低周疲劳行为。

引用本文:

韩静怡, 张鹏, 刘刚. 自然时效Al-Cu系合金溶质原子团簇的研究进展[J]. 材料导报, 2025, 39(20): 24110026-10.
HAN Jingyi, ZHANG Peng, LIU Gang. Research Progress of Solute Atomic Clusters in Natural Aging Al-Cu Alloys. Materials Reports, 2025, 39(20): 24110026-10.

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https://www.mater-rep.com/CN/10.11896/cldb.24110026 或 https://www.mater-rep.com/CN/Y2025/V39/I20/24110026

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