退火温度对8111铝箔微观组织和性能的影响

doi:10.13251/j.issn.0254-6051.2024.01.029

金属热处理 ›› 2024, Vol. 49 ›› Issue (1): 186-192.DOI: 10.13251/j.issn.0254-6051.2024.01.029

退火温度对8111铝箔微观组织和性能的影响

肖昌乐¹, 吴红艳¹, 陈伟², 康吉昌³, 陈雨楠², 刘鹏举³, 王义仁³, 王秀宾²

1. 南京信息工程大学化学与材料学院, 江苏南京 210000;
2. 中铝材料应用研究院有限公司苏州分公司, 江苏苏州 215026;
3. 云南浩鑫铝箔有限公司, 云南昆明 650502

收稿日期:2023-09-04 修回日期:2023-11-24 发布日期:2024-02-29
通讯作者: 吴红艳,教授,E-mail:wuhy2009@nuist.edu.cn
作者简介:肖昌乐(1997—),女,硕士研究生,主要研究方向为铝合金材料的加工与制备,E-mail:B17011503@163.com。

Effect of annealing temperature on microstructure and properties of 8111 aluminum foil

Xiao Changle¹, Wu Hongyan¹, Chen Wei², Kang Jichang³, Chen Yunan², Liu Pengju³, Wang Yiren³, Wang Xiubin²

1. School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing Jiangsu 210000, China;
2. Suzhou Branch, Chinalco Materials Application Research Institute Co., Ltd., Suzhou Jiangsu 215026, China;
3. Yunnan Haoxin Aluminum Foil Co., Ltd., Kunming Yunnan 650502, China

Received:2023-09-04 Revised:2023-11-24 Published:2024-02-29

摘要/Abstract

摘要： 以双辊铸轧工艺生产的8111铝合金为研究对象,研究了热处理工艺对其微观组织和性能的影响。结果表明,铸轧板材经过冷轧和均匀化处理后,组织均匀性改善,链状第二相消失,晶粒形貌由细长的纤维状变为等轴细小的再结晶晶粒。随着退火温度的升高,铝箔微观组织经历回复、再结晶和晶粒长大的过程,330 ℃保温2 h再结晶完成,平均晶粒尺寸约为42 μm,360 ℃退火时,平均晶粒尺寸最大,约45 μm;在研究的退火温度范围内,铝箔基体中的第二相化合物的形貌未发生明显变化;随退火温度升高,铝箔抗拉强度呈下降趋势,退火温度为360 ℃时,抗拉强度最低为87 MPa,而伸长率呈现先增加后降低的变化趋势,330 ℃退火时伸长率最大为10.2%,且电导率呈先升高再下降趋势,330~360 ℃退火时电导率基本不变。

关键词: 8111铝合金, 微观组织, 电导率, 力学性能

Abstract: Effect of heat treatment process on microstructure and properties of 8111 alloy produced by casting and rolling process was studied. The results show that after cold rolling and homogenization treatment, the microstructure uniformity of the cast-rolling sheet is improved, the chain like second phase disappears, and the grain morphology changes from fiber to fine equiaxed recrystallized grains. With the increase of annealing temperature, the microstructure of the aluminum foil undergoes a process of recovery, recrystallization and grain growth. The recrystallization is completed when annealed at 330 ℃ for 2 h, with an average grain size of about 42 μm. When the annealing temperature is at 360 ℃, the average grain size is the largest, about 45 μm. Within the studied annealing temperature range, there was no significant change in the morphology of the second phase compound in the aluminum foil matrix. With the annealing temperature increasing, the tensile strength of the aluminum foil shows a decreasing trend, reaching the minimum value of 87 MPa when the annealing temperature is 360 ℃, while the elongation shows a trend of first increasing and then decreasing, reaching the maximum value of 10.2% when the annealing temperature is 330 ℃, and the electrical conductivity shows a trend of first increasing and then decreasing, basically unchanged when the annealing temperature is 330-360 ℃.

Key words: 8111 aluminum alloy, microstructure, electrical conductivity, mechanical properties

中图分类号:

TG156.2

肖昌乐, 吴红艳, 陈伟, 康吉昌, 陈雨楠, 刘鹏举, 王义仁, 王秀宾. 退火温度对8111铝箔微观组织和性能的影响[J]. 金属热处理, 2024, 49(1): 186-192.

Xiao Changle, Wu Hongyan, Chen Wei, Kang Jichang, Chen Yunan, Liu Pengju, Wang Yiren, Wang Xiubin. Effect of annealing temperature on microstructure and properties of 8111 aluminum foil[J]. Heat Treatment of Metals, 2024, 49(1): 186-192.

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退火温度对8111铝箔微观组织和性能的影响

Effect of annealing temperature on microstructure and properties of 8111 aluminum foil

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