Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment
Source abstract
Abstract
The objective of this work was to study the corrosion behavior of 2xxx aluminum alloys in the marine environment and the degradation of mechanical properties caused by corrosion as well as to provide support for the lightweight design of marine equipment. The corrosion characteristics of 2297-T8 and 2195-T8 were observed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) at 3, 6, 9, and 12 months of exposure, and the mechanical properties were obtained via uniaxial tensile testing. The results of the study showed the following: (1) With an increase in the exposure time, the corrosion products on the surface of 2297-T8 gradually increase, and the corrosion products on the surface of 2195-T8 accumulate rapidly. (2) The results of EDS show that the corrosion products of 2297 are mainly Al oxides and that those of 2195 are composed of Al, Fe, Mn, Si, etc. (3) Through the corrosion pit diameter, corrosion pit depth, and corrosion mass reduction rate surface, the trend of an increasing average radius of the corrosion pits and the corrosion mass reduction rate surface varies linearly, and the average depth of the corrosion pits increases dramatically after 9 months of exposure time. (4) According to the mechanical properties of the study surface, in a marine atmosphere, the degradation of 2297-T8 ductility is higher than that of 2195-T8, while the degradation of the yield stress is lower than that of 2195-T8.
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Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Precision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, China
Intelligent Protection Research Laboratory, Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100036, China
Funding
Southwest Institute of Technology and Engineering cooperation fund · National Natural Science Foundation of China · Chongqing Human Resources and Social Security Bureau
References (31)
Show source-provided references
1. Interactions between zirconium and manganese dispersoid-forming elements on their combined addition in Al–Cu–Li alloys10.1016/j.actamat.2012.06.012 ↗
2. Dynamic crack nucleation and propagation in polycrystalline aluminum aggregates subjected to large inelastic deformations10.1007/s10704-012-9705-3 ↗
3. Starke, E.A. (2014). Historical Development and Present Status of Aluminum–Lithium Alloys. Aluminum-Lithium Alloys, Elsevier.10.1016/B978-0-12-401698-9.00001-X ↗
4. The Evolution of Al-Li Base Products for Aerospace and Space Applications10.1007/s11661-012-1155-z ↗
5. Strengthening mechanisms, deformation behavior, and anisotropic mechanical properties of Al-Li alloys: A review10.1016/j.jare.2017.12.004 ↗
6. Microstructure and pitting corrosion of armor grade AA7075 aluminum alloy friction stir weld nugget zone—Effect of post weld heat treatment and addition of boron carbide10.1016/j.dt.2015.01.002 ↗
7. Interfacial bonding and corrosion behaviors of HVOF-sprayed Fe-based amorphous coating on 8090 Al-Li alloy10.1016/j.surfcoat.2022.128316 ↗
8. Influence of microstructure of zinc-aluminium-magnesium alloy coated steel on the corrosion behavior in outdoor marine atmosphere10.1016/j.surfcoat.2019.06.052 ↗
9. Review of micro-scale and atomic-scale corrosion mechanisms of second phases in aluminum alloys10.1016/S1003-6326(21)65727-8 ↗
10. Liu, D.-J., Tian, G., Jin, G.-F., Zhang, W., and Zhang, Y.-H. (Def. Technol., 2022). Characterization of localized corrosion pathways in 2195-T8 Al–Li alloys exposed to acidic solution, Def. Technol., in press.10.1016/j.dt.2022.05.004 ↗
11. Chen, W., Zhang, W., Ding, D., and Xiao, D. (2020). Microstructure of Al-5Cu-1Li-0.6Mg-0.5Ag-0.5Mn Alloys. Metals, 11.10.3390/met11010037 ↗
12. Stable pit formation on AA2024-T3 in a NaCl environment10.1016/j.corsci.2009.08.043 ↗
13. Microconstituent-Induced Pitting Corrosion in Aluminum Alloy 2024-T310.5006/1.3292099 ↗
14. Environmental hydrogen embrittlement associated with decohesion and void formation at soluble coarse particles in a cold-rolled Al–Cu based alloy10.1016/j.msea.2020.139850 ↗
15. On the role of traps in the microstructural control of environmental hydrogen embrittlement of a 7xxx series aluminum alloy10.1016/j.jallcom.2020.157300 ↗
16. Atomic structure and growth mechanism of T1 precipitate in Al–Cu–Li–Mg–Ag alloy10.1016/j.scriptamat.2015.07.020 ↗
17. First-principle investigation on the interfacial structure evolution of the δ’/θ’/δ’ composite precipitates in Al-Cu-Li alloys10.1016/j.jmst.2020.03.065 ↗
18. Wu, M., Xiao, D., Liu, W., and Huang, L. (2022). Microstructure, Mechanical Properties, and Corrosion Behavior of Al-4.0Cu-1.1Li-0.5Mg-xAg Alloys. Metals, 12.10.3390/met12030374 ↗
19. Study on localized corrosion mechanism of 2195 Al-Li alloy in 4.0% NaCl solution (pH 6.5) using a three-electrode coupling system10.1002/maco.200403824 ↗
20. Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy10.1590/1980-5373-mr-2020-0161 ↗
21. Corrosion behaviour of 2A97-T6 Al-Cu-Li alloy: The influence of non-uniform precipitation10.1016/j.corsci.2017.12.010 ↗
22. Effect of environmental relative humidity on hydrogen-induced mechanical degradation in an Al–Zn–Mg–Cu alloy10.1016/j.vacuum.2021.110489 ↗
23. Corrosion-induced mechanical properties degradation of Al-Cu-Li (2198-T351) aluminium alloy and the role of side-surface cracks10.1016/j.corsci.2021.109330 ↗
24. Effect of microstructure evolution on corrosion behavior of 2195 Al-Li alloy friction stir welding joint10.1016/j.matchar.2021.111652 ↗
25. Environmentally assisted cracking resistance of Al–Cu–Li alloy AA2195 using slow strain rate test in 3.5% NaCl solution10.1016/S1003-6326(17)60028-1 ↗
26. Influence of NaCl environment on stress corrosion cracking of additive manufactured Ti-6Al-4V alloy10.1016/j.engfailanal.2021.105515 ↗
27. The corrosion behavior of the 6061 Al alloy in simulated Nansha marine atmosphere10.1016/j.jmrt.2022.05.066 ↗
28. Study of pre-strain before artificial aging on mechanical property and stress corrosion behavior of 2297 Al–Cu–Li alloy10.1016/j.msea.2021.142174 ↗
29. Stress corrosion cracking behavior in 2297 Al–Cu–Li alloy at different grain orientations10.1016/j.msea.2019.138252 ↗
30. Atmospheric corrosion behaviour of pure Al 1060 in tropical marine environment10.1179/1743278214Y.0000000241 ↗
31. Long-term atmospheric corrosion of aluminum alloy 2024-T4 in coastal environment: Surface and sectional corrosion behavior10.1016/j.jallcom.2019.03.028 ↗