Please wait a minute...
J Chin Soc Corr Pro  2011, Vol. 31 Issue (2): 135-138    DOI:
Research Articles Current Issue | Archive | Adv Search |
EFFECTS OF AXIAL STRESS ON EXFOLIATION CORROSION OF 7150 ALLOY
HUANG Changlong1,2, WAN Xiaopeng1, ZHAO Meiying1, XU Hairong2
1. Aeronautics School, Northwestern Polytechnic University. Xi'an 710072
2. Guangzhou Civil Aviation College. Guangzhou 510403
Download:  PDF(1586KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  The effects of axial stress on exfoliation corrosion (EFC) of T73 tempered and T77 tempered 7150 alloy were investigated based on EFC test with loading and without loading respectively in oceanic environment. It was found that EFC on T73 tempered specimen without stress was severer than that with tension stress of L axis, but milder than that with compression stress of L axis. The development of EFC on T77 tempered specimen with compression stress of L axis was much quicker than that without stress. It could be concluded that compression stress of L axis can accelerate EFC and tension stress of L axis can reduce EFC.
Key words:  exfoliation corrosion(EFC)      tension stress      inhibition, compression stress      acceleratation     
Received:  30 June 2010     
ZTFLH: 

TG 174.3

 
Corresponding Authors:  HUANG Changlong      E-mail:  richardhcl@vip.sina.com

Cite this article: 

HUANG Changlong, WAN Xiaopeng, ZHAO Meiying, XU Hairong. EFFECTS OF AXIAL STRESS ON EXFOLIATION CORROSION OF 7150 ALLOY. J Chin Soc Corr Pro, 2011, 31(2): 135-138.

URL: 

https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y2011/V31/I2/135

[1] Kelly D J,Robinson M J. Influence of heat treatment and grain shape on exfoliation corrosion of Al-Li alloy 8090 [J].Corrosion, 1993, 49(10): 787-795

[2] Dai X Y, Xia C Q, Sun Z Q, et al. Microstructure and properties of Al-9.0Zn-2.5Mg-1.2Cu-0.12Sc-0.15Zr alloy [J]. Chin. J. Nonferrous Met., 2007, 17(3): 396-402

    (戴晓元, 夏长清, 孙振起等. Al-9.0Zn-2.5Mg-1.2Cu-0.12Sc-0.15Zr合金的组织和性能 [J]. 中国有色金属学报. 2007, 17(3): 396-402)

[3] Robinson M J, Jackson N C. The influence of grain structure and intergranular corrosion rate on exfoliation and stress corrosion cracking of high strength Al--Cu--Mg alloys [J]. Corros. Sci.,1999, 41(5): 1013-1028

[4] Zhang X M, Zhang X Y, Liu S D, et al. Effect of pre-precipitation after solution on mechanical properties and corrosion resistance of aluminum alloy 7A55 [J]. J. Cent. South Univ., 2007, 38(5): 789-794

    (张新明, 张小艳, 刘胜胆等. 固溶后降温预析出对7A55铝合金力学及腐蚀性能的影响 [J]. 中南大学学报, 2007, 38(5): 789-794)

[5] Robinson M J. The role of wedging stresses in the exfoliation corrosion of high strength aluminum alloy [J].Corros. Sci., 1983, 23(8): 887-899

[6] McNaughtan D, Worsfold M, Robinson M J. Corrosion product force measurements in the study of exfoliation and stress corrosion cracking in high strength aluminum alloys [J].Corros. Sci., 2003, 45(10): 2377-2389

[7] Robinson M J. Mathematical modeling of exfoliation corrosion in high strength aluminum alloys [J]. Corros. Sci.,1982, 22(8): 775-790

[8] Li J F, Zhang Z, Zheng Z Q, et al, Influence of tensile stress on exfoliation corrosion and electrochemical impedance spectroscopy of 7075 alloy [J]. Corros. Sci. Prot. Technol.,2005, 17(2): 79-82

    (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 [J]. 腐蚀科学与防护技术. 2005, 17(2): 79-82)

[9] Boeing Industry. BAC5602 heat treatment of aluminum alloys [S].

[10] Boeing Industry. BMS7-257 aluminum alloy extrusion 7150 [S].

[12] Boeing Industry. BSS7219 test method of intergranular attack [S].

[13] Boeing Industry. BAC5786 etch cleaning of aluminum alloys [S].

[14] Shan Z H. Mechanics of Materials [M]. Beijing: Higher Education Press, 1999: 48-50

[15] Qin Q, Wang R Z. The static relax of residual stress and the optimal residual stress field of shot peen [J].Met. Sci. Technol., 1988. 7(1): 1-7

     (邱琼, 王仁智. 关于残余应力的静载松弛与最佳喷丸残余应力场的研究 [J]. 金属科学与工艺, 1988, 7(1): 1-7)

[16] 3M Industry. 61-5001-0752-1 Flap Peen TC 330 [S].
No related articles found!
No Suggested Reading articles found!