Effect of Surface Stress Mitigation on the Corrosion Behavior of Alloy 22
When metallic plates are welded, for example using the Gas Tungsten Arc Welding (GTAW) process, residual tensile stresses may develop in the vicinity of the weld seam. Processes such as Low Plasticity Burnishing (LPB) and Laser Shock Peening (LSP) could be applied locally to eliminate the residual stresses produced by welding. In this study, Alloy 22 (N06022) plates were welded and then the above-mentioned surface treatments were applied to eliminate the residual tensile stresses. The aim of the current study was to comparatively test the corrosion behavior of as-welded (ASW) plates with the corrosion behavior of plates with stress mitigated surfaces. Immersion and electrochemical tests were performed. Results from both general and localized corrosion tests show that the corrosion resistance of the mitigated plates was not affected by the surface treatments applied.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15015895
- Report Number(s):
- UCRL-PROC-208022; TRN: US200509%%496
- Resource Relation:
- Conference: Presented at: CORROSION/2005 and NACE Expo, Houston, TX (US), 04/03/2005--04/07/2005; Other Information: PBD: 10 Nov 2004
- Country of Publication:
- United States
- Language:
- English
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