Journal
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume 24, Issue 6, Pages 2569-2576Publisher
SPRINGER
DOI: 10.1007/s11665-015-1530-1
Keywords
laser; peening; stainless steel; stress corrosion cracking
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The paper describes a new hybrid laser surface treatment approach, combining laser surface melting and laser shock peening treatments, for refurbishment stress corrosion cracking damaged type 304L stainless steel specimens. Hybrid laser surface treatment produced crack-free compressively stressed surface. With respect to as-machined specimens, laser-rejuvenated specimens demonstrated significantly reduced susceptibility to stress corrosion cracking in chloride environment with minor increase in mean surface roughness. The results of the study, although particularly applicable to shallow stress corrosion cracking damage, are important for life extension of in-service stainless steel components operating in corrosive chloride environment.
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