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Correlation Between Two Types of Surface Stress Mitigation and the Resistance to Corrosion of Alloy 22

[+] Author Affiliations
Ahmet Yilmaz, David V. Fix, John C. Estill, Raúl B. Rebak

Lawrence Livermore National Laboratory, Livermore, CA

Paper No. PVP2005-71175, pp. 503-509; 7 pages
doi:10.1115/PVP2005-71175
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 7: Operations, Applications, and Components
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4192-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

When metallic plates are welded, 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 compare 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 show that the corrosion resistance of the mitigated plates was not affected by the surface treatments applied.

Copyright © 2005 by ASME

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