Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-29T18:01:47.393Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of aging mechanisms on the exfoliation corrosion behavior of a spray deposited Al–Zn–Mg–Cu–Zr aluminum alloy

Published online by Cambridge University Press:  13 March 2017

Liuqun Xie ,
Qian Lei ,
Mingpu Wang ,
Xiaofei Sheng  and
Zhou Li
Liuqun Xie
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Qian Lei*
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Mingpu Wang
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Xiaofei Sheng
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha 410083, China
Zhou Li
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha 410083, China
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

Al–Zn–Mg–Cu–Zr alloys are very important aeronautical materials because of their low density, high strength, and high ductility. Corrosion failure is a significant factor causing aviation accidents, which should be investigated to develop an aeronautical material but has not been done yet. In this work, the effects of aging mechanisms on the exfoliation corrosion behavior of a spray deposited Al–Zn–Mg–Cu–Zr alloy were investigated. Natural aging (NA), single-stage aging (SA), and retrogression and re-aging (RRA) were treated on specimens before exfoliation corrosion testing. Corrosion attacks were evaluated using the optical microscope (OM) and scanning electron microscope (SEM). Corrosion mechanisms were deduced on the basis of polarization curve results and an equivalent circuit. The RRA sample exhibited the smallest corrosion attack among the three samples, while the NA sample showed the largest corrosion attack. Intergranular corrosion on grain boundaries was discussed to understand the exfoliation corrosion process in the RRA sample. The amount and size of precipitates in grain interior and grain boundary of RRA samples are larger than those in SA and NA samples, leading to the low corrosion susceptibility of the RRA sample.

Keywords

Alcorrosionspray deposition
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 6 , 28 March 2017 , pp. 1105 - 1117
Check for updates
Copyright
Copyright © Materials Research Society 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

b)

Current Address: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA

Contributing Editor: Jürgen Eckert

References

REFERENCES

Zhang, L., Li, X.Y., Nie, Z.R., Huang, H., and Sun, J.T.: Microstructure and mechanical properties of a new Al–Zn–Mg–Cu alloy joints welded by laser beam. Mater. Des. 83, 451–458 (2015).CrossRefGoogle Scholar
Lin, Y.C., Zhang, J.L., Chen, M.S., Zhou, Y., and Ma, X.: Electrochemical corrosion behaviors of a stress-aged Al–Zn–Mg–Cu alloy. J. Mater. Res. 31, 2493–2505 (2016).CrossRefGoogle Scholar
Raju, K., Ojha, S.N., and Harsha, A.P.: Spray forming of aluminum alloys and its composites: An overview. J. Mater. Sci. 43, 2509–2521 (2008).CrossRefGoogle Scholar
Grant, P.S.: Spray forming. Prog. Mater. Sci. 39, 497–545 (1995).CrossRefGoogle Scholar
Su, R.S., Qu, Y.D., You, J.H., and Li, R.D.: Study on a new retrogression and re-aging treatment of spray formed Al–Zn–Mg–Cu alloy. J. Mater. Res. 41, 573–579 (2016).CrossRefGoogle Scholar
Liu, B., Lei, Q., Xie, L.Q., Wang, M.P., and Li, Z.: Microstructure and mechanical properties of high product of strength and elongation Al–Zn–Mg–Cu–Zr alloys fabricated by spray deposition. Mater. Des. 96, 217–223 (2016).CrossRefGoogle Scholar
Wang, X.H., Wang, J.H., Yue, X., and Gao, Y.: Effect of aging treatment on the exfoliation corrosion and stress corrosion cracking behaviors of 2195 Al–Li alloy. Mater. Des. 67, 596–605 (2015).CrossRefGoogle Scholar
Zhao, Y., Wang, Q., Chen, H., and Yan, K.: Microstructure and mechanical properties of spray formed 7055 aluminum alloy by underwater friction stir welding. Mater. Des. 56, 725–730 (2014).CrossRefGoogle Scholar
Ning, Z.L., Guo, S., Zhang, M.X., Cao, F.Y., Jia, Y.D., and Sun, J.F.: Characterization of the secondary phases in spray formed Al–Zn–Mg–Cu–Sc–Zr alloy during hot compression. J. Mater. Res. 31, 2465–2472 (2016).CrossRefGoogle Scholar
Najjar, D., Magnin, T., and Warner, T.J.: Influence of critical surface defects and localized competition between anodic dissolution and hydrogen effects during stress corrosion cracking of a 7050 aluminum alloy. Mater. Sci. Eng., A 238A, 293–302 (1997).CrossRefGoogle Scholar
Hu, Y.F., Wang, M.C., and Wen, J.L.: Corrosion analysis of aluminum alloys for aircraft structural components and its protection. Corros. Sci. Prot. Technol. 15, 97–100 (2003).Google Scholar
Chen, Q.Z., Cheng, Z.H., and Xi, H.Z.: Corrosion behavior on joint section of aircraft aluminum alloys structure. J. Chin. Soc. Corros. Prot. 27, 334–337 (2007).Google Scholar
Li, J.F., Peng, Z.W., Li, C., Jia, Z.Q., Chen, W.J., and Zheng, Z.Q.: Mechanical properties, corrosion behaviors and microstructures of 7075 aluminum alloy with various aging treatments. Trans. Nonferrous Met. Soc. China 18, 755–762 (2008).CrossRefGoogle Scholar
Poole, W.J., Wells, M.A., and Lloyd, D.J.: Understanding the compromise between strength and exfoliation corrosion in high strength 7000 alloys. Mater. Sci. Forum 519–521, 455–460 (2006).Google Scholar
Yu, H.C., Wang, M., Jia, Y., Xiao, Z., Chen, C., Lei, Q., Li, Z., Chen, W., Zhang, H., Wang, Y., and Cai, C.: High strength and large ductility in spray-deposited Al–Zn–Mg–Cu alloys. J. Alloys Compd. 601, 120–125 (2014).CrossRefGoogle Scholar
Andreatta, F., Terryn, H., and de Wit, J.H.W.: Corrosion behavior of different tempers of AA7075 aluminum alloy. Electrochim. Acta 49, 2851–2862 (2004).CrossRefGoogle Scholar
ASTM G 34–01. Standard test method for exfoliation corrosion susceptibility in 2XXX and 7XXX series aluminum alloys (EXCO test).Google Scholar
Yu, H.C., Wang, M.P., Sheng, X.F., Li, Z., Chen, L.B., Lei, Q., and Chen, C.: Microstructure and tensile properties of large-size 7055 aluminum billets fabricated by spray forming rapid solidification technology. J. Alloys Compd. 578, 208–214 (2013).CrossRefGoogle Scholar
Afonso, C.R.M., Spinelli, J.E., Bolfarini, Cl., Botta, W.J., Kiminami, C.S., and Garcia, A.: Rapid solidification of an Al–5Ni alloy processed by spray forming. Mater. Res. 15(5), 779–785 (2012).CrossRefGoogle Scholar
Wu, Y., Del Castillo, L., and Lavernia, E.J.: Superplasticity of 5083 alloys produced by spray deposition. Scr. Mater. 34, 1243–1249 (1996).CrossRefGoogle Scholar
Hyodo, A., Bolfarini, C., and Ishikawa, T.T.: Chemistry and tensile properties of a recycled AA7050 via spray forming and ECAP/E. Mater. Res. 15, 739–748 (2012).CrossRefGoogle Scholar
Liu, S., Zhong, Q., Zhang, Y., Liu, W., Zhang, X., and Deng, Y.: Investigation of quench sensitivity of high strength Al–Zn–Mg–Cu alloys by time-temperature-properties diagrams. Mater. Des. 31, 3116–3120 (2010).CrossRefGoogle Scholar
Deschamps, A., Livet, F., and Brechet, Y.: Influence of predeformation on aging in an Al–Zn–Mg alloy: I. Microstructure evolution and mechanical properties. Acta Mater. 47, 281–292 (1999).CrossRefGoogle Scholar
Lai, J., Jiang, R., Liu, H., Dun, X., Li, Y., Li, X., and Cent, J.: Influence of cerium on microstructures and mechanical properties of Al–Zn–Mg–Cu alloys. J. Cent. South Univ. 19, 869–874 (2012).CrossRefGoogle Scholar
Li, X.Z., Hansen, V., Gjonnes, J., and Wallenberg, L.R.: HREM study and structure modeling of the η′ phase, the hardening precipitates in commercial Al–Zn–Mg alloys. Acta Mater. 47, 2651–2659 (1999).CrossRefGoogle Scholar
Liu, J.Z., Chen, J.H., Yang, X.B., Ren, S., Wu, C.L., Xu, H.Y., and Zou, J.: Revisiting the precipitation sequence in Al–Zn–Mg-based alloys by high-resolution transmission electron microscopy. Scr. Mater. 63, 1061–1064 (2010).CrossRefGoogle Scholar
Totten, G.E. and MacKenzie, D.S.: Handbook of Aluminum, Vol. 1 (Marcel Dekker, Inc., New York, 2003); pp. 287–288.Google Scholar
Uguz, A. and Martin, J.W.: The effect of retrogression and re-aging on the ductile fracture toughness of Al–Zn–Mg alloys containing different dispersoid phases. J. Mater. Sci. 30, 5923–5941 (1995).CrossRefGoogle Scholar
Danh, N.C., Rajan, K., and Wallace, W.: A TEM study of microstructural changes during retrogression and reaging in 7075 aluminum. Metall. Trans. A 14(9), 1843–1849 (1983).CrossRefGoogle Scholar
Talianker, M. and Cina, B.: Retrogression and reaging and the role of dislocations in the stress corrosion of 7000-type aluminum alloys. Metall. Trans. A 20(10), 2087–2093 (1989).CrossRefGoogle Scholar
Tait, W.S.: An Introduction to Electrochemical Corrosion Testing for Practicing Engineers and Scientists (Pair O Docs, Racine, Wis, USA, 1994).Google Scholar
Wang, G.S., Zhao, Z.H., Cui, J.Z., and Guo, Q.: Microstructure and RRA treatment of LFEC 7075 aluminum alloy extruded bars. Journal of Wuhan University of Technology-Mater. Sci. Ed. 28, 184–191 (2013).CrossRefGoogle Scholar
Lin, Y.C., Zhang, J.L., Liu, G., and Liang, Y.J.: Effects of pre-treatments on aging precipitates and corrosion resistance of a creep-aged Al–Zn–Mg–Cu alloy. Mater. Des. 83, 866–875 (2015).CrossRefGoogle Scholar
Wang, Q.Z., Zhao, Y., Yan, K., and Lu, S.: Corrosion behavior of spray formed 7055 aluminum alloy joint welded by underwater friction stir welding. Mater. Des. 68, 97–103 (2015).CrossRefGoogle Scholar
Su, J., Zhang, Z., Shi, Y., Yang, Z., Zhang, J., and Cao, C.: The effect of applied tensile stress on the exfoliation corrosion of 7075-T6 alloy. Mater. Corros. 57, 729–733 (2006).CrossRefGoogle Scholar
Conde, A. and de Damborenea, J.: Electrochemical modelling of exfoliation corrosion behavior of 8090 alloy. Electrochim. Acta 43, 849–860 (1998).CrossRefGoogle Scholar
Li, J.F., Jia, Z.Q., Li, C.X., Birbilis, N., and Cai, C.: Exfoliation corrosion of 7150 Al alloy with various tempers and its electrochemical impedance spectroscopy in EXCO solution. Mater. Corros. 60, 407–514 (2009).CrossRefGoogle Scholar
Keddam, M., Kuntz, C., Takenouti, H., Schuster, D., and Zuili, D.: Exfoliation corrosion of aluminum alloys examined by electrode impedance. Electrochim. Acta 42, 87–97 (1997).CrossRefGoogle Scholar
Peng, G., Chen, K., Fang, H., Chao, H., and Chen, S.: EIS study on pitting corrosion of 7150 aluminum alloy in sodium chloride and hydrochloric acid solution. Mater. Corros. 61, 783–789 (2010).CrossRefGoogle Scholar
Xiao, Y.P., Pan, Q.L., Li, W.B., Liu, X.Y., and He, Y.B.: Influence of retrogression and re-aging treatment on corrosion behavior of an Al–Zn–Mg–Cu alloy. Mater. Des. 32, 2149–2156 (2011).CrossRefGoogle Scholar
Lin, J.C., Liao, H.L., Jehng, W.D., Chang, C.H., and Lee, S.L.: Effect of heat treatments on the tensile strength and SCC-resistance of AA7050 in an alkaline saline solution. Corros. Sci. 48, 3139–3156 (2006).CrossRefGoogle Scholar
Liu, J.T., Zhang, Y.A., Li, X.W., Li, Z.H., Xiong, B.Q., and Zhang, J.S.: Phases and microstructures of high Zn-containing Al–Zn–Mg–Cu alloys. Rare Met. 35, 380–384 (2016).CrossRefGoogle Scholar
Rao, K.S. and Rao, K.P.: Pitting corrosion of heat-treatable aluminium alloys and welds: A review. Trans. Indian Inst. Met. 57, 593–610 (2004).Google Scholar
Lin, L., Liu, Z., Li, Y., Han, X., and Chen, X.: Effects of severe cold rolling on exfoliation corrosion behavior of Al–Zn–Mg–Cu–Cr Alloy. J. Mater. Eng. Perform. 21, 1070–1075 (2012).CrossRefGoogle Scholar
Robinson, J.S.: Influence of retrogressing and reaging on the stress corrosion cracking resistance of 7010. Presented at the 7th International Conference on Aluminium Alloys, Charlottesville, 2000; pp. 9–14.Google Scholar
Zheng, Z.Q., Li, H.Y., and Mo, Z.M.: Retrogression and reaging treatment of a 7055 type aluminum alloy. Chin. J. of Nonferrous Met. 11(5), 771–776 (2001).Google Scholar
You, J.H., Li, P.H., Li, G.F., Liu, S.D., and Zhu, H.F.: Effect of retrogression processing on mechanical properties and intergranular corrosion of 7050 aluminum alloy. J. Cent. South Univ. (Sci. Technol.) 39(5), 968–974 (2008).Google Scholar
Zhe, W.Y., Gu, B., and Gao, K.W.: Research and progress in theories of strength corrosion.. Corros. Sci. Prot. Technol. 7(2), 97–101 (1995).Google Scholar