深冷处理对6061铝合金微观组织和力学性能的影响

doi:10.13251/j.issn.0254-6051.2025.05.027

金属热处理 ›› 2025, Vol. 50 ›› Issue (5): 175-180.DOI: 10.13251/j.issn.0254-6051.2025.05.027

深冷处理对6061铝合金微观组织和力学性能的影响

牛雪梅¹, 景林旺², 黄尧¹, 闫献国¹, 陈峙¹

1.太原科技大学机械工程学院, 山西太原 030024;
2.山西航天清华装备有限责任公司, 山西长治 046012

收稿日期:2024-11-08 修回日期:2025-03-26 发布日期:2025-06-25
通讯作者: 景林旺,硕士,E-mail:jinglinwang1998@163.com
作者简介:牛雪梅(1971—),女,博士,主要研究方向为铝合金热处理及材料的微观组织表征,E-mail:nxmlpc@126.com。
基金资助:
山西省基础研究计划(202103021224280);山西省重点研发计划(202202150401011)

Effect of cryogenic treatment on microstructure and mechanical properties of 6061 aluminum alloy

Niu Xuemei¹, Jing Linwang², Huang Yao¹, Yan Xianguo¹, Chen Zhi¹

1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China;
2. Shanxi Aerospace Qinghua Equipment Co., Ltd., Changzhi Shanxi 046012, China

Received:2024-11-08 Revised:2025-03-26 Published:2025-06-25

摘要/Abstract

摘要： 设计了深冷与油浴时效复合热处理和传统固溶时效处理工艺,使用扫描电镜和透射电镜进行微观组织观察,对比分析了两种工艺下试样组织演变对力学性能的影响。标准拉伸试验结果表明,与经过传统固溶时效处理相比,在固溶和时效之间进行深冷处理,试样的抗拉强度和伸长率分别提高了3.86%和18.61%。因此,在固溶和时效之间引入深冷处理能够显著改善铝合金的力学性能。

关键词: 深冷处理:6061铝合金, 组织演变, 力学性能

Abstract: A composite heat treatment process involving cryogenic quenching and oil bath aging was designed, in comparison to the conventional solution and aging treatment process. Through the comparative study of the two processes, the effect of microstructure evolution on the mechanical properties of the specimens was analyzed through the microstructure observation with scanning electron microscope and transmission electron microscope. The standard tensile test results show that the tensile strength and elongation of the specimens treated with cryogenic treatment between solution treatment and aging increase by 3.86% and 18.61%, respectively, compared with those of the conventional solution treated and aged. It is concluded that the introduction of cryogenic treatment between solution and aging can significantly improve the mechanical properties of aluminum alloy.

Key words: cryogenic treatment:6061 aluminum alloy, microstructure evolution, mechanical properties

中图分类号:

牛雪梅, 景林旺, 黄尧, 闫献国, 陈峙. 深冷处理对6061铝合金微观组织和力学性能的影响[J]. 金属热处理, 2025, 50(5): 175-180.

Niu Xuemei, Jing Linwang, Huang Yao, Yan Xianguo, Chen Zhi. Effect of cryogenic treatment on microstructure and mechanical properties of 6061 aluminum alloy[J]. Heat Treatment of Metals, 2025, 50(5): 175-180.

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深冷处理对6061铝合金微观组织和力学性能的影响

Effect of cryogenic treatment on microstructure and mechanical properties of 6061 aluminum alloy

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