Er、Zr微合金化对Al-Zn-Mg合金组织及性能的影响

doi:10.13251/j.issn.0254-6051.2023.04.003

金属热处理 ›› 2023, Vol. 48 ›› Issue (4): 18-22.DOI: 10.13251/j.issn.0254-6051.2023.04.003

Er、Zr微合金化对Al-Zn-Mg合金组织及性能的影响

刘阳¹, 吴晓蓝¹, 饶茂², 毛雪晶², 高坤元¹, 魏午¹, 熊湘沅¹, 黄晖¹

1.北京工业大学新型功能材料教育部重点实验室, 北京 100124;
2.西南铝业集团有限责任公司, 重庆 400000

收稿日期:2022-09-16 修回日期:2022-12-19 发布日期:2023-05-27
通讯作者: 吴晓蓝,副教授,E-mail:xiaolan.wu@bjut.edu.cn
作者简介:刘阳(1997—),男,硕士,主要研究方向为铝合金、铝基复合材料,E-mail:liuyang_1997@126.com。
基金资助:
国家重点研发计划(2021YFB3704204,2021YFB3700902,2021YFB3704205);国家自然科学基金(51621003);北京市自然科学基金(2202009)

Effect of Er and Zr microalloying on microstructure and properties of Al-Zn-Mg alloy

Liu Yang¹, Wu Xiaolan¹, Rao Mao², Mao Xuejing², Gao Kunyuan¹, Wei Wu¹, Xiong Xiangyuan¹, Huang Hui¹

1. Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China;
2. Southwest Aluminum Group Co., Ltd., Chongqing 400000, China

Received:2022-09-16 Revised:2022-12-19 Published:2023-05-27

摘要/Abstract

摘要： 研究了Er、Zr元素的添加对Al-Zn-Mg合金的微观组织、力学性能和腐蚀性能的影响。结果表明,Er、Zr元素的复合添加可以使合金的硬度、强度以及抗腐蚀性能有明显提高。Er、Zr元素的添加形成了弥散分布的纳米级Al₃(Er,Zr)析出相,阻碍位错运动和晶界迁移,使合金的强度得到明显提高。另外,Er元素的添加使合金的晶粒细化,既提高了强度也保证了一定的伸长率,还使合金具有良好的抗剥落腐蚀性能。

关键词: Al-Zn-Mg合金, 微合金化, 微观组织, 力学性能, 耐腐蚀性能

Abstract: Effects of Er and Zr addition on microstructure, mechanical properties and corrosion properties of Al-Zn-Mg alloy were studied. The results show that the composite addition of Er and Zr can significantly improve the hardness, strength and corrosion resistance of the alloy. With the addition of Er and Zr elements, nano-sized Al₃(Er,Zr) precipitates are dispersed in the matrix, which can hinder dislocation movement and grain boundary migration, and significantly increase the strength of the alloy. In addition, the addition of Er element refines grain of the alloy, which not only increases the strength, but also guarantees a certain elongation, and makes the alloy also have good anti exfoliation corrosion performance.

Key words: Al-Zn-Mg alloy, microalloying, microstructure, mechanical properties, corrosion resistance

中图分类号:

TG146.21

刘阳, 吴晓蓝, 饶茂, 毛雪晶, 高坤元, 魏午, 熊湘沅, 黄晖. Er、Zr微合金化对Al-Zn-Mg合金组织及性能的影响[J]. 金属热处理, 2023, 48(4): 18-22.

Liu Yang, Wu Xiaolan, Rao Mao, Mao Xuejing, Gao Kunyuan, Wei Wu, Xiong Xiangyuan, Huang Hui. Effect of Er and Zr microalloying on microstructure and properties of Al-Zn-Mg alloy[J]. Heat Treatment of Metals, 2023, 48(4): 18-22.

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Er、Zr微合金化对Al-Zn-Mg合金组织及性能的影响

Effect of Er and Zr microalloying on microstructure and properties of Al-Zn-Mg alloy

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