Microstructure and corrosion resistance improvement of alloys by Laser shock peening

This research area aims to improve corrosion resistance of alloys like Al alloy and low carbon steel using laser induced shock wave with ultrahigh pressure, which causes deep compressive residual stress and microstructure refinement on alloy surface due to high strain rate phenomena. Nano-indentation, X-ray diffraction, metallographic microscope, SEM, and TEM are combined for characterization and analysis. The success of this project will enable the preventing or restoring of stress corrosion cracking in pipeline steel and the operation, maintenance, and support costs reducing associated with the pitting, cracking, and sensitization of 5000 series Al alloy. 



Department of Electrical and Computer Engineering
University of Nebraska-Lincoln
209N Scott Engineering Center
P.O. Box 880511
Lincoln, NE 68588-0511, USA


Phone: (402) 472-3771
Fax:     (402) 472-4732

Email: ylu2@unl.edu


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