Enhancing corrosion resistance of lightweight metal alloys through laser shock peening

Wuji Huang; Brett Leister; Ninggang Shen; Austin Mckee; Syed Mubeen; George Bonheyo; Aashish Rohatgi; Hongtao Ding

doi:10.2351/7.0001541

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Enhancing corrosion resistance of lightweight metal alloys through laser shock peening

Journal article

Peer reviewed

Enhancing corrosion resistance of lightweight metal alloys through laser shock peening

Wuji Huang, Brett Leister, Ninggang Shen, Austin Mckee, Syed Mubeen, George Bonheyo, Aashish Rohatgi and Hongtao Ding

Journal of laser applications, Vol.36(4), 042040

11/2024

DOI: 10.2351/7.0001541

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https://www.osti.gov/biblio/2477590View

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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.

corrosion behavior

lightweight metal alloy

laser shock peening

Details

Title: Subtitle: Enhancing corrosion resistance of lightweight metal alloys through laser shock peening
Creators: Wuji Huang - University of Iowa
Brett Leister - Naval Surface Warfare Center
Ninggang Shen - Tesla (United States)
Austin Mckee - University of Iowa
Syed Mubeen - University of Iowa
George Bonheyo - Pacific Northwest National Laboratory
Aashish Rohatgi - Pacific Northwest National Laboratory
Hongtao Ding - University of Iowa
Resource Type: Journal article
Publication Details: Journal of laser applications, Vol.36(4), 042040
DOI: 10.2351/7.0001541
ISSN: 1042-346X
eISSN: 1938-1387
Publisher: AIP Publishing
Number of pages: 8
Grant note: 2242763 / National Science Foundation (10.13039/100000001) 642579 / Pacific Northwest National Laboratory (10.13039/100011661) Office of Naval Research (10.13039/100000006)
Date published: 11/2024
Academic Unit: Civil and Environmental Engineering; Iowa Technology Institute; Chemical and Biochemical Engineering; Mechanical Engineering
Record Identifier: 9984722935502771

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