Accessible Requires Authentication Published by De Gruyter August 18, 2021

Intergranular corrosion susceptibility of 6061 aluminum alloy welded joints

Lihua Gong, Weimin Guo and Yang Li

Abstract

The intergranular corrosion behavior of 6061 aluminum alloy welded joints produced by metal inert gas welding and friction stir welding was studied. The microstructure of the welded joints and the intergranular corrosion morphology of the cross-section were analyzed by optical microscopy. The results show that the most sensitive area of intergranular corrosion is the partially melted zone of the metal inert gas welding, and the maximum corrosion depth is about seven times that of the base metal, followed by the unmixed zone. The heat affected zone has the lowest sensitivity. Although the welding seam corroded seriously, general corrosion played a leading role. With the high heat input of metal inert gas welding, the sensitivity to intergranular corrosion in the partially melted zone increased significantly, while other zones had little change. For friction stir welding joints, the heat affected zone suffered from the most severe corrosion, and the nugget zone the least. However, the difference is not apparent. The susceptibility to intergranular corrosion of friction stir welding joints is weaker than that of metal inert gas welding joints but more severe than the base metal.


Prof. Weimin Guo Luoyang Ship Material Research Institute State Key Laboratory for Marine Corrosion and Protection Shandong Province Jimo District Qingdao City, 266237 P. R. China Tel.: +86 13608974903

Funding statement: This investigation was financially supported by the Research Fund of State Key Laboratory for Marine Corrosion and Protection of Luoyang Ship Material Research Institute (LSMRI) under the contract No. KF190409.

References

[1] O. Nejadseyfi, A. Shokuhfar, A. Dabiri, A. Azimi: J. Alloys Compd. 648 (2015) 912. DOI:10.1016/j.jallcom.2015.05.177 Search in Google Scholar

[2] A. Yuruk, B. Cevik, N. Kahraman: Mater. Test. 61 (2019) 941. DOI:10.3139/120.111404 Search in Google Scholar

[3] I. Guzman, E. Granda, B. Vargas, C. Cruz, Y. Avila, J. Acevedo: Int. J. Adv. Manuf. Tech.103 (2019) 2553. DOI:10.1007/s00170-019-03673-7 Search in Google Scholar

[4] S. Sinhmar, D.K. Dwivedi: Corros. Sci. 133 (2018) 25. DOI:10.1016/j.corsci.2018.01.012 Search in Google Scholar

[5] A. Squillace, A. De Fenzo, G. Giorleo, F. Bellucci: J. Mater. Process. Technol. 152 (2004) 97. DOI:10.1016/j.jmatprotec.2004.03.022 Search in Google Scholar

[6] Y. Peng, C.B. Shen, Y.D. Zhao, Y. Chen: Rare Met. Mater. Eng. 46 (2017) 344. DOI:10.1016/S1875-5372(17)30092-9 Search in Google Scholar

[7] G.Q. Guo, N. Huang, H. Chen, H.M. Liu, A.Q. Tian, Z.C. Guo: J. Mech. Sci. Technol. 26 (2012) 1471. DOI:10.1007/s12206-012-0342-6 Search in Google Scholar

[8] P. Dong, D.Q. Sun, B. Wang, Y.Y. Zhang, H.M. Li: Mater. Des. 54 (2014) 760. DOI:10.1016/j.matdes.2013.09.001 Search in Google Scholar

[9] V. Fahimpour, S.K. Sadrnezhaad, F. Karimzadeh: Mater. Des. 39 (2012) 329. DOI:10.1016/j.matdes.2012.02.043 Search in Google Scholar

[10] S. Maggiolino, C. Schmid: J. Mater. Process. Technol. 197 (2008) 237. DOI:10.1016/j.jmatprotec.2007.06.034 Search in Google Scholar

[11] F.H. Nie, H.G. Dong, S. Chen, P. Li, L.Y. Wang, Z.X. Hao, X.T. Li, H. Zhang: J. Mater. Sci. Technol. 34 (2018) 551. DOI:10.1016/j.jmst.2016.11.004 Search in Google Scholar

[12] J. Xiong, S.Y. Zou: J. Process Control. 77 (2019) 89. DOI:10.1016/j.jprocont.2019.03.013 Search in Google Scholar

[13] S. Rajakumar, C. Muralidharan, V. Balasubramanian: Mater. Des. 32 (2011) 2878. DOI:10.1016/j.matdes.2010.12.025 Search in Google Scholar

[14] Z.M. Liang, K.N. Shi, W.P. Li.Y. Cao, H. Lu: Trans. China Weld. Inst. 39 (2018) 25. DOI:10.12073/j.hjxb.2018390218 Search in Google Scholar

[15] Y. Zou, Q. Liu, Z.H. Jia, Y. Xing, L.P. Ding, X.L. Wang: Appl. Surf. Sci. 405 (2017) 489. DOI:10.1016/j.apsusc.2017.02.045 Search in Google Scholar

[16] X.L. Li, J.H. Chen, C.H. Liu, J.N. Feng, S.H. Wang: Acta Metall. Sin. 49 (2013) 243. DOI:10.3724/SP.J.1037.2012.00509 Search in Google Scholar

[17] A. Kalinenko, K. Kim, I. Vysotskiy, I. Zuiko, S. Malopheyev, S. Mironov, R. Kaibyshev: Mater. Sci. Eng. A 793 (2020)793. DOI:10.1016/j.msea.2020.139858 Search in Google Scholar

[18] Z.B. Fang, Z.Q. Zhang, Y. Li, H. Yin, Y.S. Xing, C.S. He: Mater. Rep. B 33 (2019) 304. 11896/cldb. 201902019. DOI:10 Search in Google Scholar

Received: 2021-02-02
Accepted: 2021-05-17
Published Online: 2021-08-18
Published in Print: 2021-08-31

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