时效温度对7055铝合金晶间腐蚀敏感性的影响

doi:10.13251/j.issn.0254-6051.2025.01.032

金属热处理 ›› 2025, Vol. 50 ›› Issue (1): 206-212.DOI: 10.13251/j.issn.0254-6051.2025.01.032

时效温度对7055铝合金晶间腐蚀敏感性的影响

朱聪¹, 王芝秀^1,2, 王烨¹, 李海^1,2

1.常州大学材料科学与工程学院, 江苏常州 213164;
2.常州大学江苏省材料表面科学与技术重点实验室, 江苏常州 213164

收稿日期:2024-07-29 修回日期:2024-11-14 出版日期:2025-01-25 发布日期:2025-03-12
通讯作者: 李海,教授,博士,E-mail:Lehigh_73@163.com
作者简介:朱聪(1998—),男,硕士研究生,主要研究方向为高性能变形铝合金,E-mail:zhucong_98@163.com。
基金资助:
国家自然科学基金(52171029,51671038)

Effect of aging temperature on intergranular corrosion susceptibility of 7055 aluminum alloy

Zhu Cong¹, Wang Zhixiu^1,2, Wang Ye¹, Li Hai^1,2

1. School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu 213164, China;
2. Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou Jiangsu 213164, China

Received:2024-07-29 Revised:2024-11-14 Online:2025-01-25 Published:2025-03-12

摘要/Abstract

摘要： 采用光学显微镜(OM)、透射电镜(TEM)、硬度测试、晶间腐蚀测试等方法研究了时效温度(150、180、210 ℃)对喷射成形7055铝合金晶间腐蚀敏感性的影响。结果表明,在相同硬度条件下,欠时效合金发生晶间腐蚀,而峰时效及过时效合金发生点蚀。随着时效温度的升高和时效时间的延长,合金晶间腐蚀敏感性降低,腐蚀形貌由晶间腐蚀向点蚀转变。时效温度由150 ℃提高至210 ℃,晶界析出相(GBPs)由连续分布向断续分布转变,GBPs中的Cu含量从3.82%升高至5.02%,无沉淀析出带(PFZs)宽度从37 nm增加到55 nm。合金晶间腐蚀敏感性的变化源于GBPs的粗大且不连续分布、PFZs宽度的增加以及GBPs中Cu元素偏聚的共同作用。

关键词: 7055铝合金, 时效温度, 微观组织, 晶间腐蚀敏感性

Abstract: Effect of aging temperature (150, 180, 210 ℃) on intergranular corrosion susceptibility of 7055 aluminum alloy was studied by means of optical microscope (OM), transmission electron microscope(TEM), hardness test and intergranular corrosion test. The results show that under the same hardness condition, intergranular corrosion occurs in the under-aged alloy, while pitting corrosion occurs in the peak-aged and over-aged alloys. With the increase of aging temperature and time, the intergranular corrosion susceptibility of the alloy decreases and the corrosion morphology changes from intergranular corrosion to pitting corrosion. With the aging temperature increasing from 150 ℃ to 210 ℃, the grain boundary precipitates (GBPs) change from continuous distribution to discontinuous distribution, the Cu content in GBPs increases from 3.82% to 5.02%, and the width of precipitate free zones (PFZs) increases from 37 nm to 55 nm. The change of intergranular corrosion susceptibility of the alloy is due to the combined effect of coarsening and discontinuous distribution of GBPs, the broadening of PFZs, and the segregation of Cu element in GBPs.

Key words: 7055 aluminum alloy, aging temperature, microstructure, intergranular corrosion susceptibility

中图分类号:

TG146.21

朱聪, 王芝秀, 王烨, 李海. 时效温度对7055铝合金晶间腐蚀敏感性的影响[J]. 金属热处理, 2025, 50(1): 206-212.

Zhu Cong, Wang Zhixiu, Wang Ye, Li Hai. Effect of aging temperature on intergranular corrosion susceptibility of 7055 aluminum alloy[J]. Heat Treatment of Metals, 2025, 50(1): 206-212.

参考文献

[1]臧金鑫, 陈军洲, 韩凯, 等. 航空铝合金研究进展与发展趋势[J]. 中国材料进展, 2022, 41(10): 769-777, 807.
Zang Jinxin, Chen Junzhou, Han Kai, et al. Research progress and development tendency of aeronautical aluminum alloys[J]. Materials China, 2022, 41(10): 769-777, 807.
[2]向开云, 丁立鹏, 贾志宏, 等. 喷射成形超高强Al-Zn-Mg-Cu合金研究进展[J]. 中国有色金属学报, 2022, 32(5): 1199-1223.
Xiang Kaiyun, Ding Lipeng, Jia Zhihong, et al. Research progress of ultra-high strength spray-forming Al-Zn-Mg-Cu alloy[J]. The Chinese Journal of Nonferrous Metals, 2022, 32(5): 1199-1223.
[3]杨献文, 康元, 张文静, 等. 回归温度对7055铝合金挤压棒材力学性能和抗腐蚀性能的影响[J]. 中国有色金属学报, 2023, 33(7): 2056-2070.
Yang Xianwen, Kang Yuan, Zhang Wenjing, et al. Effect of retrogression temperature on mechanical properties and corrosion resistance of 7055 aluminum alloy extruded bars[J]. The Chinese Journal of Nonferrous Metals, 2023, 33(7): 2056-2070.
[4]Zeid A F E. Influence of aging temperature on precipitation kinetics, morphology and hardening behavior of Al-7475 alloy[J]. Arabian Journal for Science and Engineering, 2019, 44(7): 6621-6629.
[5]Zou Yan, Cao Lingfei, Wu Xiaodong, et al. Effect of ageing temperature on microstructure, mechanical property and corrosion behavior of aluminum alloy 7085[J]. Journal of Alloys and Compounds, 2020, 823: 153792.
[6]尹志民, 方家芳, 黄继武, 等. 时效工艺对7A52铝合金晶间腐蚀和剥蚀行为的影响[J]. 中南大学学报(自然科学版), 2007(4): 617-622.
Yin Zhimin, Fang Jiafang, Huang Jiwu, et al. Effects of aging treatment on intercrystalline corrosion and exfoliation corrosion behavior of 7A52 aluminum alloy[J]. Journal of Central South University(Science and Technology), 2007(4): 617-622.
[7]Li Yiyun, Kovarik L, Phillips P J, et al. High resolution characterization of the precipitation behavior of an Al-Zn-Mg-Cu alloy[C]//13th International Conference on Aluminum Alloys(ICAA). 2012: 1069-1074.
[8]Park J K, Ardell A J. Microstructures of the commercial 7075 Al alloy in the T651 and T7 tempers[J]. Metallurgical and Materials Transactions A, 1983, 14: 1957-1965.
[9]任硕, 陈江华, 刘吉梓, 等. 7150铝合金时效时晶界析出行为的研究[J]. 电子显微学报, 2011, 30(S1): 444-450.
Ren Shuo, Chen Jianghua, Liu Jizi, et al. Study on the precipitation behaviors at grain boundaries in 7150 aluminum alloys upon thermal aging[J]. Journal of Chinese Electron Microscopy Society, 2011, 30(S1): 444-450.
[10]李海, 韦玉龙, 王芝秀. 固溶处理温度对峰值时效7050铝合金晶间腐蚀敏感性的影响[J]. 中国有色金属学报, 2019, 29(10): 2225-2235.
Li Hai, Wei Yulong, Wang Zhixiu. Effect of solution-treating temperature on intergranular corrosion of peak-aged 7050 Al alloy[J]. The Chinese Journal of Nonferrous Metals, 2019, 29(10): 2225-2235.
[11]王芝秀, 朱凡, 郑凯, 等. 过时效阶段Al-Mg-Si-Cu合金的晶间腐蚀再敏化[J]. 中国有色金属学报, 2018, 28(11): 2199-2205.
Wang Zhixiu, Zhu Fan, Zheng Kai, et al. Re-sensitization to intergranular corrosion in Al-Mg-Si-Cu alloy during over-ageing[J]. The Chinese Journal of Nonferrous Metals, 2018, 28(11): 2199-2205.
[12]谢娟, 孟立春, 陈江华, 等. Al-Zn-Mg-Cu合金的局部腐蚀行为与Zn、Mg含量的关系[J]. 中国有色金属学报, 2017, 27(12): 2473-2482.
Xie Juan, Meng Lichun, Chen Jianghua, et al. Behavior of localized corrosion of Al-Zn-Mg-Cu alloys in relation with their Zn and Mg contents[J]. The Chinese Journal of Nonferrous Metals, 2017, 27(12): 2473-2482.
[13]She Huan, Chu Wei, Shu Da, et al. Effects of silicon content on microstructure and stress corrosion cracking resistance of 7050 aluminum alloy[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(7): 2307-2313.
[14]Ren Jian, Wang Richu, Peng Chaoqun, et al. Multistage aging treatment influenced precipitate characteristics improve mechanical and corrosion properties in powder hot-extruded 7055 Al alloy[J]. Materials Characterization, 2020, 170: 110683.
[15]Yang Xiubo, Chen Jianghua, Zhang Guohui, et al. A transmission electron microscopy study of microscopic causes for localized-corrosion morphology variations in the AA7055 Al alloy[J]. Journal of Materials Science Technology, 2018, 34(10): 1719-1729.
[16]Liu Fang, Zheng Jingxu, Chen Xia, et al. Study on corrosion resistance of artificially aged 7075 aluminium alloy by using Cs-corrected STEM[J]. Transactions of Nonferrous Metals Society of China, 2022, 32(9): 2828-2837.
[17]Fang Xu, Song Min, Li Kai, et al. Effects of Cu and Al on the crystal structure and composition of η(MgZn₂) phase in over-aged Al-Zn-Mg-Cu alloys[J]. Journal of Materials Science, 2012, 47(14): 5419-5427.
[18]Huang Lanping, Chen Kanghua, Li Song. Influence of grain-boundary pre-precipitation and corrosion characteristics of intergranular phases on corrosion behaviors of an Al-Zn-Mg-Cu alloy[J]. Materials Science Engineering B, 2012, 177(11): 862-868.

时效温度对7055铝合金晶间腐蚀敏感性的影响

Effect of aging temperature on intergranular corrosion susceptibility of 7055 aluminum alloy

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