Laser Peening without Coating to Mitigate Stress Corrosion Cracking and Fatigue Failure of Welded Components

Abstract:

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The authors have applied laser peening without coating (LPwC) to metallic materials. Compressive residual stress nearly equal to the yield strength of the materials was imparted on the surface. Accelerating stress corrosion cracking (SCC) tests showed that LPwC had a significant effect to prevent the SCC initiation of sensitized materials of SUS304, Alloy 600 and the weld metal, Alloy 182. Push-pull type fatigue testing demonstrated that LPwC drastically enhanced the fatigue strength of fillet-welded rib-plates of SM490A.

Info:

Periodical:

Materials Science Forum (Volumes 580-582)

Edited by:

Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na

Pages:

519-522

DOI:

10.4028/www.scientific.net/MSF.580-582.519

Citation:

Y. Sano et al., "Laser Peening without Coating to Mitigate Stress Corrosion Cracking and Fatigue Failure of Welded Components", Materials Science Forum, Vols. 580-582, pp. 519-522, 2008

Online since:

June 2008

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Price:

$35.00

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