Download Laser Peening For ...

Heather R. Mattern

Format: Print Length

Language: English

Pages: 60

Publisher:

ISBN: B006G24VRY

Format: PDF / Kindle / ePub

Size: 7 MB

Downloadable formats: PDF


This paintings examines using laser peening (LP) for mitigation of pressure corrosion cracking (SCC) in marine grade aluminum alloys (Al-Mg). those alloys should be sensitized in the course of welding and may improve a tensile residual tension within the warmth affected sector that could advertise SCC in a salt water atmosphere. steel inert gasoline welded aluminum alloy 5083 (4.8wt% Mg) plate was once laser peened utilizing numerous laser intensities to create compressive stresses. Mechanical exams have been played to enquire the SCC of the cloth together with gradual pressure expense checking out and potentiostatically pushed, salt-water publicity. Microstructural and micromechanical checks have been played to signify the results of LP at the microstructure of the cloth. The gradual pressure fee trying out confirmed a scientific lessen in ductility with expanding LP depth. The fracture surfaces on all welded samples have been indicative of ductile fracture yet with a pre-crack size that scaled inversely with LP depth. The hardness of the fabric elevated with LP depth. This paintings means that welded aluminum alloy 5083 doesn't simply tension corrosion crack. LP does impact the mechanical habit of the cloth, yet its complete impression on rigidity corrosion habit calls for extra examine.

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