Enhancing strength-ductility balance in AZ31 Mg alloy through single-shot laser shock peening and subsequent annealing

This research demonstrates that single-shot laser shock peening followed by annealing significantly improves the strength−ductility balance of the AZ31 alloy. This is achieved by creating a heterostructure that reduces the dislocation density and enhances work hardening, thereby presenting a viable...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2024-04, Vol.898, p.146388, Article 146388
Main Authors: Lee, Jeong Hun, Kim, Ji Woo, Ha, Jeong Hong, Kim, Jae Gyeong, Choi, Ji Hwan, Won, Jong Woo
Format: Article
Language:English
Subjects:
Deformation twinning
Grain growth
Heterostructure
Laser induced shock wave
Mechanical properties improvement
Work hardening rate
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Summary:This research demonstrates that single-shot laser shock peening followed by annealing significantly improves the strength−ductility balance of the AZ31 alloy. This is achieved by creating a heterostructure that reduces the dislocation density and enhances work hardening, thereby presenting a viable method for developing magnesium alloys with superior mechanical properties. •AZ31 alloy, annealed after single-shot laser shock peening (LSP), achieves an excellent strength-ductility balance.•LSP and subsequent annealing enhance work-hardening by lowering dislocation density and forming heterostructures.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2024.146388