深冷处理对5083Al-Mg合金组织和性能的影响

doi:10.13251/j.issn.0254-6051.2023.10.030

金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 198-201.DOI: 10.13251/j.issn.0254-6051.2023.10.030

深冷处理对5083Al-Mg合金组织和性能的影响

晋芳伟¹, 吉学英², 马秀勤¹, 高榆岚¹

1.贵州工程应用技术学院机械工程学院, 贵州毕节 551700;
2.贵州工程应用技术学院毕节循环经济研究院, 贵州毕节 551700

收稿日期:2023-05-23 修回日期:2023-08-19 出版日期:2023-10-25 发布日期:2023-12-07
作者简介:晋芳伟(1965—),男,教授,博士,主要研究方向为固体材料改性、深冷处理,E-mail:fangweijin@126.com
基金资助:
贵州省科技支撑计划(黔科合支撑[2019]2870);贵州省教育厅自然科学研究(黔教合KY字[2019]053,黔教合KY字[2020]160)

Effect of cryogenic treatment on microstructure and properties of 5083Al-Mg alloy

Jin Fangwei¹, Ji Xueying², Ma Xiuqin¹, Gao Yulan¹

1. School of Mechanical Engineering, Guizhou University of Engineering Science, Bijie Guizhou 551700, China;
2. Research Institute of Bijie Circular Economy, Guizhou University of Engineering Science, Bijie Guizhou 551700, China

Received:2023-05-23 Revised:2023-08-19 Online:2023-10-25 Published:2023-12-07

摘要/Abstract

摘要： 试验研究了深冷处理时间对5083Al-Mg合金力学性能和硬度的影响。研究表明,5083Al-Mg合金的抗拉强度在0~72 h范围,随着深冷处理时间的增加而增大;深冷处理时间过长,对于进一步改善合金的抗拉强度反而不利。综合分析试验结果揭示,深冷处理改善合金力学性能的较佳处理时间为12~24 h。合金提高强度和硬度的机理是,在深冷处理过程中,合金基体组织发生晶格畸变、位错增殖和缠绕,同时伴随Al₃Mg₂相弥散析出。

关键词: Al-Mg合金, 深冷处理, 组织, 力学性能

Abstract: Effect of cryogenic treatment time on tensile properties and hardness of 5083Al-Mg alloy was studied. The results show that the tensile strength of the 5083Al-Mg alloy increases with prolong of the cryogenic treatment time within 0-72 h. It is unfavorable to further improve the tensile strength of the alloy by excessively extending the cryogenic treatment time. Comprehensive analysis of the experimental results reveal that the preferable cryogenic treatment time is 12-24 h to improve mechanical properties of the alloy. The mechanism of improving the strength and hardness of the alloy is that the lattice distortion, dislocation multiplication and twine occur in the process of cryogenic treatment, accompanied by the dispersed precipitation of Al₃Mg₂ phase.

Key words: Al-Mg alloy, cryogenic treatment, microstructure, mechanical properties

中图分类号:

晋芳伟, 吉学英, 马秀勤, 高榆岚. 深冷处理对5083Al-Mg合金组织和性能的影响[J]. 金属热处理, 2023, 48(10): 198-201.

Jin Fangwei, Ji Xueying, Ma Xiuqin, Gao Yulan. Effect of cryogenic treatment on microstructure and properties of 5083Al-Mg alloy[J]. Heat Treatment of Metals, 2023, 48(10): 198-201.

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深冷处理对5083Al-Mg合金组织和性能的影响

Effect of cryogenic treatment on microstructure and properties of 5083Al-Mg alloy

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