Enhancing corrosion resistance of lightweight metal alloys through laser shock peening
Source abstract
Abstract
In this study, we investigated the effects of laser shock peening (LSP) on the corrosion resistance of lightweight metal alloys, specifically AA6061 and AZ31. LSP was performed underwater, using a nanosecond pulse laser and without using a protective coating or layer on the workpiece. The corrosion behaviors of these alloys were analyzed through electrochemical tests, including open circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization measurements. The results demonstrated that LSP significantly improved the polarization resistance, and higher laser power intensities led to increased corrosion resistance and reduced corrosion rates. This enhancement in anti-corrosion performance is attributed to the formation of a protective oxide layer on the surface, acting as a barrier against corrosion. The findings underscore the potential of laser surface treatment as a viable technique for enhancing the corrosion resistance of lightweight metal alloys.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Treatment and Residual Stress · High-Temperature Coating Behaviors · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, University of Iowa 1 , Iowa City, Iowa 52242
Naval Surface Warfare Center (NSWC) 2 , Bethesda, Maryland 20817
Battery Manufacturing Engineering, Tesla, Inc. 3 , Deer Creek, California 94304
Department of Chemical and Biochemical Engineering, University of Iowa 4 , Iowa City, Iowa 52242
National Security Directorate, Pacific Northwest National Laboratory (PNNL) 5 , Richland, Washington 99352
Energy and Environment Directorate, Pacific Northwest National Laboratory (PNNL) 6 , Richland, Washington 99352
Funding
National Science Foundation · Office of Naval Research · Pacific Northwest National Laboratory
References (25)
Show source-provided references
1. Aluminium alloys in space applications: A short report10.37934/araset.22.1.17 ↗
2. A review on environment friendly and lightweight magnesium-based metal matrix composites and alloys10.1016/j.matpr.2020.07.424 ↗
3. Aluminum alloys in marine construction: Characteristics, application, and problems from a fabrication viewpoint10.1007/s40868-019-00069-w ↗
4. Laser shock peening and its applications: A review10.1007/s40516-019-00097-9 ↗
5. Dislocation density-based modeling of subsurface grain refinement with laser-induced shock compression10.1016/j.commatsci.2011.08.038 ↗
6. The effects of shot peening, laser shock peening and ultrasonic nanocrystal surface modification on the fatigue strength of Inconel 71810.1016/j.msea.2021.141029 ↗
7. Post-processing techniques to enhance the quality of metallic parts produced by additive manufacturing10.3390/met12010077 ↗
8. Effect of laser shock peening on microstructure and mechanical properties of TiC strengthened Inconel 625 alloy processed by selective laser melting10.1016/j.msea.2022.142610 ↗
9. Improving electrochemical corrosion properties of AZ31 magnesium alloy via phosphate conversion with laser shock peening pretreatment10.1016/j.jallcom.2020.155837 ↗
10. Effects of coverage layer on the electrochemical corrosion behaviour of Mg-Al-Mn alloy subjected to massive laser shock peening treatment10.1016/j.jallcom.2018.12.224 ↗
11. Influence of the microstructure and laser shock processing (LSP) on the corrosion behaviour of the AA2050-T8 aluminium alloy10.1016/j.corsci.2011.05.066 ↗
12. Effect of coverage layer on corrosion resistance of 6061-T6 aluminum alloy subjected to laser shock peening10.13229/j.cnki.jdxbgxb20180112 ↗
13. 2022
14. Effects of laser shock peening on stress corrosion behavior of 7075 aluminum alloy laser welded joints10.1016/j.msea.2015.08.084 ↗
15. Effect of confinement on surface modification for laser peen forming without protective coating10.1016/j.surfcoat.2016.01.054 ↗
16. Microstructural basis for improved corrosion resistance of laser surface processed AZ31 Mg alloy10.1016/j.corsci.2021.109707 ↗
17. Electrochemical corrosion behavior of 5083 aluminum alloy subjected to laser shock peening10.1007/s11665-019-04299-2 ↗
18. Mechanical properties and microstructural response of 2A14 aluminum alloy subjected to multiple laser shock peening impacts10.1016/j.vacuum.2019.03.058 ↗
19. The Pilling–Bedworth ratio of oxides formed from the precipitated phases in magnesium alloys10.3389/fmats.2021.761052 ↗
20. Pilling–Bedworth ratio for oxidation of alloys10.1007/s100190050008 ↗
21. Localized corrosion of magnesium in chloride-containing electrolyte studied by a scanning vibrating electrode technique10.1149/1.2918900 ↗
22. Electrochemical impedance spectroscopy for the measurement of the corrosion rate of magnesium alloys: Brief review and challenges10.3390/met10060775 ↗
23. Negative capacitance or inductive loop? A general assessment of a common low frequency impedance feature10.1016/j.elecom.2018.11.017 ↗
24. A study on the corrosion behavior in sea water of welds aluminum alloy by shielded metal arc welding, friction stir welding and gas tungsten arc welding10.1016/S1452-3981(23)11118-7 ↗
25. Pitting corrosion of aluminum10.1016/S0010-938X(99)00012-8 ↗