Electrochemical Corrosion Behavior of 5083 Aluminum Alloy Subjected to Laser Shock Peening

Yu, Yihua; Zhou, Wangfan; Tong, Zhaopeng; Chen, Lan; Yang, Xueqing; Larson, Enoch Asuako; Ren, Xudong

doi:10.1007/s11665-019-04299-2

Cited by 11 publications

(7 citation statements)

References 24 publications

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“…The magnitude of E oc , although does not necessarily represent corrosion resistance, but is indicative of the corrosion tendency of a material in contact with a corrosive environment. [ 35 ] Lower values of E oc are indicative of greater corrosion tendency, and there is more likeliness of electrochemical corrosion to occur under the same conditions and vice versa. Thus, the EB weld showed a relatively higher corrosion tendency than the base metal.…”

Section: Resultsmentioning

confidence: 99%

“…This could be attributed to the continuous formation of the passive film on the surface of the specimens exposed to the test solution. [ 32–35 ]…”

Section: Resultsmentioning

confidence: 99%

“…This could be attributed to the continuous formation of the passive film on the surface of the specimens exposed to the test solution. [32][33][34][35] The base metal showed a higher value of E oc , as evident from its curve's position with respect to the EB weld. These observations suggested that the base metal had a relatively more stable protective passive film.…”

Section: Electrochemical Corrosion Behaviormentioning

confidence: 99%

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Electrochemical corrosion behavior and microstructural characteristics of electron beam welded UNS S32205 duplex stainless steel

Singh

Shahi

2021

Materials & Corrosion

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Different electrochemical techniques were used to study the corrosion behavior of UNS S32205 duplex stainless steel (DSS) welded autogenously using a single‐pass by electron beam welding process, supplemented by microstructural characterization. Furthermore, a comparative study was also performed between multipass gas tungsten arc (GTA)‐welded and EB‐welded DSS for their microstructure and corrosion behavior. The differences in weld thermal cycle and chemical composition influenced the fusion zone microstructure of both the welds and eventually their corrosion properties. The general corrosion resistance of the EB weld was lower than the base metal and higher than the GTA weld despite its weld zone being characterized by a relatively unbalanced phase ratio (α/γ) in comparison to the GTA weld. However, the EB weld showed relatively higher susceptibility to pitting corrosion than the base metal and GTA weld due to its poor repassivation characteristics and poor resistance to pit growth.

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Section: Resultsmentioning

confidence: 99%

“…This could be attributed to the continuous formation of the passive film on the surface of the specimens exposed to the test solution. [ 32–35 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Corrosion Behaviormentioning

confidence: 99%

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Electrochemical corrosion behavior and microstructural characteristics of electron beam welded UNS S32205 duplex stainless steel

Singh

Shahi

2021

Materials & Corrosion

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“…The thickness of surface oxide film, surface roughness and surface grain size of corrosion samples all have influence on their corrosion resistance (Yang et al, 2019). In the process of corrosion, the defects are the first to be corroded on the material surface.…”

Section: Figure 3 3d Morphology Of Aluminum Alloy Surface After Cass Testmentioning

confidence: 99%

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

Wang

et al. 2021

ACMM

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Purpose The purpose of this paper is to promote the corrosion resistance of the 5083-111H aluminum alloy by laser cleaning. Design/methodology/approach Laser with 2 ns pulse width was adopted in this project and the corrosion resistance of cleaned samples was tested by copper-accelerated salt spray (CASS). The surface morphology, elemental composition and distribution were then characterized by SEM. Moreover, surface morphology, elemental composition and distribution were also tested. Findings Results suggested a higher corrosion resistance was successfully obtained by laser cleaning. Compared with samples cleaned by 2000 grit sandpaper, mechanical cleaning resulted in a 53% larger height difference between the peak and valley. The content of the oxygen is 8.85% on the surface cleaned mechanically and the distribution is dependent on the distribution of aluminum whereas that of the laser cleaning sample is 24.41% and the distribution existed even in the Al-poor area. Originality/value In this project, the 2-ns laser cleaning was proved to have the capability to remove the oxide layer on the aluminum alloy surface while retaining an excellent corrosion resistance and smooth surface. Meanwhile, a thorough elemental distribution and smaller grain size lead to a smaller difference in elemental concentration. This retards the diffusion of oxygen into the substrate and hence increases the corrosion resistance of the surface.

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“…In this research, the effects of power density on the magnitude and distribution of the residual stresses in the LPed Al 5083 were studied. Al 5083 is an emerging material of choice for applications in aerospace and marine industries due to its high strength-toweight ratio as well as other outstanding attributes [24]. While this alloy is widely used in different sectors, the literature has few experimental studies on LP of Al 5083, which are mainly focused on its corrosion cracking behaviors [24,25].…”

Section: Introductionmentioning

confidence: 99%

Laser Peening Analysis of Aluminum 5083: A Finite Element Study

Tajyar

Holtham

Brooks

et al. 2021

QuBS

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In this research, a finite element (FE) technique was used to predict the residual stresses in laser-peened aluminum 5083 at different power densities. A dynamic pressure profile was used to create the pressure wave in an explicit model, and the stress results were extracted once the solution was stabilized. It is shown that as power density increases from 0.5 to 4 GW/cm2, the induced residual stresses develop monotonically deeper from 0.42 to 1.40 mm. However, with an increase in the power density, the maximum magnitude of the sub-surface stresses increases only up to a certain threshold (1 GW/cm2 for aluminum 5083). Above this threshold, a complex interaction of the elastic and plastic waves occurring at peak pressures above ≈2.5 Hugoniot Elastic Limit (HEL) results in decreased surface stresses. The FE results are corroborated with physical experiments and observations.

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Electrochemical Corrosion Behavior of 5083 Aluminum Alloy Subjected to Laser Shock Peening

Cited by 11 publications

References 24 publications

Electrochemical corrosion behavior and microstructural characteristics of electron beam welded UNS S32205 duplex stainless steel

Electrochemical corrosion behavior and microstructural characteristics of electron beam welded UNS S32205 duplex stainless steel

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

Laser Peening Analysis of Aluminum 5083: A Finite Element Study

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