局部拉弯应力对民机蒙皮2024-T3铝合金剥蚀行为的影响

doi:CNKI:11-1929/V.20120201.0941.003

材料工程与机械制造

本期目录 | 过刊浏览 | 高级检索

前一篇 |

局部拉弯应力对民机蒙皮2024-T3铝合金剥蚀行为的影响

纪朝辉, 张璋, 苏景新, 王志平

中国民航大学天津市民用航空适航与维修重点实验室, 天津 300300

收稿日期:2011-08-22 修回日期:2011-09-04 出版日期:2012-05-25 发布日期:2012-05-24
通讯作者: 纪朝辉,Tel.: 020-24092074 E-mail: zhji@cauc.edu.cn E-mail:zhji@cauc.edu.cn
基金资助:
中国民用航空局科技项目(MHRD201015)

Impact of Local Tensile and Bending Stress on Exfoliation Corrosion Behavior of Aluminum Alloy 2024-T3 for Civil Aircraft Skin

JI Zhaohui, ZHANG Zhang, SU Jingxin, WANG Zhiping

Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China

Received:2011-08-22 Revised:2011-09-04 Online:2012-05-25 Published:2012-05-24
Supported by:
Civil Aviation Administration Science Foundation of China (MHRD201015)

摘要/Abstract

摘要： 根据弯梁法自制简易加载装置,结合电化学阻抗谱(EIS)测试方法,研究了民机蒙皮2024-T3铝合金在局部拉弯应力作用下浸泡于剥落腐蚀(EXCO)溶液中的剥蚀行为。结果表明,合金在发生剥蚀时,EIS中将出现2个时间常数。2024-T3铝合金加载试样的EIS在12 h时出现2个时间常数,而未加载试样的EIS在12~24 h之间才出现2个时间常数,且通过对比剥蚀过程中2种试样EIS的拟合数据,说明局部拉弯应力对2024-T3铝合金剥蚀的发生及发展具有促进作用。

关键词: 2024-T3铝合金, 弯梁法, 电化学阻抗谱(EIS), EXCO溶液, 剥蚀

Abstract: By means of a simple loading device designed for the bending beam test combined with the electrochemical impedance spectroscopy (EIS) testing method, this paper studies the effect of local tensile and bending stress on the exfoliation corrosion (EXCO) behavior of aluminum alloy 2024-T3 for civil aircraft skin immersed in the EXCO solution. The result shows that in the EIS two time constants appeare when the alloy exfoliation corrosion occurres. The EIS of the aluminum alloy 2024-T3 load specimen demonstrate two time constants when immersed in the EXCO solution for 12 h, while the specimen without load demonstrate two time constants between 12 h and 24 h. The comparison of the EIS fitting data of two different specimens during alloy exfoliation corrosion shows that local tensile and bending stress can promote the exfoliation corrosion behavior of aluminum alloy 2024-T3.

Key words: aluminum alloy 2024-T3, bending beam test, electrochemical impedance spectroscopy (EIS), EXCO solution, exfoliation corrosion

中图分类号:

纪朝辉, 张璋, 苏景新, 王志平. 局部拉弯应力对民机蒙皮2024-T3铝合金剥蚀行为的影响 [J]. 航空学报, 2012, (5): 956-964.

JI Zhaohui, ZHANG Zhang, SU Jingxin, WANG Zhiping. Impact of Local Tensile and Bending Stress on Exfoliation Corrosion Behavior of Aluminum Alloy 2024-T3 for Civil Aircraft Skin[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, (5): 956-964.

参考文献

[1] Wang B Z. Aircraft design manual book 10: structure design. Beijing: Aviation Industry Press, 2000. (in Chinese) 王宝忠. 飞机设计手册第10册: 结构设计. 北京: 航空工业出版社, 2000.
[2] Hu F Y, Wang M C, Wen J L. Corrosion analysis of aluminum alloys for aircraft structural components and its protection. Corrosion Science and Protection Technology, 2003, 15(2): 97-100. (in Chinese) 胡芳友, 王茂才, 温景林. 沿海飞机铝合金结构件腐蚀与防护. 腐蚀科学与防护技术, 2003, 15(2): 97-100.
[3] Hang L C, Gu A, Liu H C, et al. Corrosion failure of aluminum alloy parts on airplane used in marine environment. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(10): 1217-1221. (in Chinese) 黄领才, 谷岸, 刘慧丛, 等. 海洋环境下服役飞机铝合金零件腐蚀失效分析. 北京航空航天大学学报, 2008, 34(10): 1217-1221.
[4] ASTM G34-01-2007 Standard test method for exfoliation corrosion susceptibility in 2XXX and 7XXX series aluminum alloys (EXCO test). 2007.
[5] Habashi M, Bonte E, Galland J, et al. Quantitative measurements of the degree of exfoliation on aluminium alloys. Corrosion Science, 1993, 49(10): 787-795.
[6] Li D, Guo B L, Zhang Y M. The measurement of the exfoliation rate of aluminium alloys. Acta Aeronautica et Astronautica Sinica, 1995, 16(3): 304-308. (in Chinese) 李荻, 郭宝兰, 张玉梅. 硬铝合金剥蚀速率测试方法的研究. 航空学报, 1995, 16(3): 304-308.
[7] Fan L, Cai J P, Zhang Q. Corrosion behavior of LY12 aluminum alloy with cyclic immersion corrosion test. Journal of Chinese Society for Corrosion and Protection, 2009, 29(3): 215-224. (in Chinese) 范林, 蔡健平, 张琦. LY12铝合金在周浸试验中的腐蚀行为. 中国腐蚀与防护学报, 2009, 29(3): 215-224.
[8] Conde A, de Damborenea J. Electrochemical modelling of exfoliation corrosion behavior of 8090 alloy. Electrochimica Acta, 1997, 43(8): 849-860.
[9] Conde A, de Damborenea J. Evaluation of exfoliation susceptibil ity by means of electrochemical impedance spectroscopy. Corrosion Science, 2000, 42(8): 1363-1377.
[10] Li H Y, Tang Y, Zeng Z D, et al. Exfoliation corrosion of T6-and T8-aged Al_<em>xCu_<em>yLi_<em>z alloy. Transactions Nonferrous Metals Society of China, 2008, 18(4): 778-783.
[11] Orozco-Cruz R, Galvan-Martinez R, Martinez E A, et al. Electrochemical impedance spectroscopy (EIS) applied to study to aluminum alloys degradation in saline solution. 25th Meeting of the Mexican Electrochemical Society and 3rd Meeting of the Mexican Section of the Electrochemical Society. ECS Transactions, 2010, 29(1): 73-80.
[12] GB/T 15970.2—2000. Corrosion of metals and alloys-stress Corrosion testing part 2: preparation and use of bent-beam specimens. Beijing: Standards Press of China, 2000. (in Chinese) GB/T 15970.2—2000 金属和合金的腐蚀应力腐蚀试验第2部分: 弯梁试样的制备和应用. 北京:中国标准出版社,2000.
[13] Wu G, Yao L J, Peng R Q, et al. Handbook of aluminum and aluminum alloys. Beijing: Science Press, 1994. (in Chinese) 武恭, 姚良均, 彭如清, 等. 铝及铝合金材料手册. 北京: 科学出版社, 1994.
[14] Li J F, Zheng Z Q, Ren W D. Function mechanism of secondary phase on localized corrosion of Al alloy. Materials Review, 2005, 19(2): 81-90. (in Chinese) 李劲风, 郑子樵, 任文达. 第二相在铝合金局部腐蚀中的作用机制. 材料导报, 2005, 19(2): 81-90.
[15] Posada M, Murr L E, Niou C S, et al. Exfoliation and related microstructures in 2024 aluminum body skins on aging aircraft. Materials Characterization, 1997, 38(4-5): 259-272.
[16] Cao C N, Zhang J Q. An introduction to electrochemical impedance spectroscopy. Beijing: Science Press, 2002. (in Chinese) 曹楚南, 张鉴清. 电化学阻抗谱导论. 北京: 科学出版社, 2002.
[17] Li J F, Zhang Z, Zheng Z Q, et al. Influence of tensile stress on exfoliation corrosion and electrochemical impedance spectroscopy of 7075 Al-alloy. Corrosion Science and Protection Technology, 2005, 17(2): 79-82. (in Chinese) 李劲风, 张昭, 郑子樵, 等. 拉应力对7075铝合金的剥蚀及其电化学阻抗谱的影响. 腐蚀科学与防护技术, 2005, 17(2): 79-82.
[18] Su J X, Zhang Z, Cao F H, et al. Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution and EIS during exfoliation corrosion evolution. Acta Metallurgica Sinica, 2005, 41(9): 974-978. (in Chinese) 苏景新, 张昭, 曹发和, 等. T6态2090Al-Li合金在EXCO溶液中的剥蚀行为和剥蚀发展过程中的电化学阻抗谱. 金属学报, 2005, 41(9): 974-978.

E-mail：hkxb@buaa.edu.cn

关于我们

期刊社服务

专业学科

封面文章

友情链接

主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

局部拉弯应力对民机蒙皮2024-T3铝合金剥蚀行为的影响

Impact of Local Tensile and Bending Stress on Exfoliation Corrosion Behavior of Aluminum Alloy 2024-T3 for Civil Aircraft Skin

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	赵小虎;沈志刚;邢玉山;麻树林. 空间环境分子污染对航天器的影响[J]. 航空学报, 2009, 30(1): 159-164.
[2]	王鑫;赵小虎;王明珠;沈志刚&#;. 纳米颗粒增强环氧树脂抗原子氧剥蚀性能机理研究[J]. 航空学报, 2007, 28(1): 207-212.