Investigation on the Corrosion Effect of Friction Stir Welded AA2024 T3 Aluminum Alloy Joints

Abstract:

Before friction stir welded integral panels are used in main aircraft structure, the corrosion behavior of welded joint need to be studied in detail. 2024 T3 samples were designed and welded by friction stir welding; the microstructure crossing the weld zone was observed by scanning electron microscopy (SEM), the feature of different zones (base material, thermo-mechanical affected zone, nugget) was seen; the corrosion testing in NaCl smoking box was carried out, and microstructure was observed after corrosion, localized corrosion predominantly occurs in the thermo-mechanical affected zone.

• Periodical: Key Engineering Materials (Volumes 525-526)
• Pages: 129-132
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.525-526.129
• Online since: November 2012
• Authors: Yu E Ma, Zhen Qiang Zhao
• Keywords: Corrosion Behavior, Friction Stir Weld, Microstructure of Nugget

References

[1] P.S. Pao, S.J. Gill, C.R. Feng, and K.K. Sankaran, Corrosion-fatigue crack growth in friction stir welded Al 7075. Scripta Materialia 45 (2001) 605-612.

DOI: 10.1016/s1359-6462(01)01070-3

[2] Ju Kang, Rui-dong Fu, Guo-hong Luan, Chun-lin Dong, Miao He, In-situ investigation on the pitting corrosion behavior of friction stir welded joint of AA2024-T3 aluminium alloy. Corrosion Science 52(2010)620-626.

DOI: 10.1016/j.corsci.2009.10.027

[3] Samar Jyoti Kalita, Microstructure and corrosion properties of dilde laser melted friction stir weld of aluminum alloy 2024 T351. Applide Surface Science 257(2011)3985-3997.

DOI: 10.1016/j.apsusc.2010.11.163

[4] Zhou Yongjie, Sun Dechao, Xing Li, Liu Geping, Microstructure and Stress Corrosion Cracking Behavior of Friction Stir Welded Aluminum Alloy 5A06. Journal of International Metal Working 25 (2004) 45-49.