Practical Failure Analysis

, Volume 3, Issue 5, pp 43–57 | Cite as

Weld features that differentiate weld and plate corrosion

  • D. L. Olson
  • A. N. Lasseigne
  • M. Marya
  • B. Mishra
Peer Reviewed Articles

Abstract

Corrosion is an environmentally assisted damage that professionals face daily, particularly with welded structures. Fusion welds result from solidification and solid-state transformations induced by well-localized thermal cycles. A fusion weld joint inherently exhibits an irregular surface as well as gradients in chemical composition, microstructure, properties, and residual stress, depending on process parameters and part geometry. This article analyzes the roles of surface topography, alloy chemical compositional variation, hydrogen distribution, and stress on weld corrosion. Methods to inhibit weld corrosion are suggested.

Keywords

corrosion hydrogen-assisted cracking weld weld repair 

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Copyright information

© ASM International - The Materials Information Society 2003

Authors and Affiliations

  • D. L. Olson
    • 1
  • A. N. Lasseigne
    • 1
  • M. Marya
    • 1
  • B. Mishra
    • 1
  1. 1.Center for Welding, Joining and Coatings Research, The G.S. Ansell Department of Metallurgical and Materials EngineeringColorado School of MinesGolden

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