INFLUENCE OF CATHODIC OVER-PROTECTION ON FATIGUE OF CARBON STEEL IN SEA WATER

Accelerated tests of 1,020 welded steels in synthetic sea water at 33 Hz while under--0.2 V (SCE) cathodic polarisation indicate that cathodic protection restores the steel to its endurance limit. Over-protection does not affect notched or welded material. Fatigue crack growth rates increased with stress regardless of environment in air, freely corroding or protected at --0.7 to --1.2 V (SCE). Tests simulated 20-year cyclic stress probabilities for offshore oil-well structures. There was no evidence of hydrogen embrittlement including tests of crevices and concentration cells artifically produced on materials.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00941492
• Corporate Authors:

  National Association of Corrosion Engineers

  P.O. Box 1499
  Houston, TX  United States  77001
• Authors:
  • Dvoracek, L M
• Publication Date: 1977-9

Media Info

• Features: References;
• Pagination: 4 p.
• Serial:
  • Materials Performance (MP)
  • Volume: 16
  • Publisher: National Association of Corrosion Engineers
  • ISSN: 0094-1492
  • Serial URL: http://www.nace.org/Publications/Materials-Performance/

Subject/Index Terms

• TRT Terms: Cathodic protection; Corrosion; Corrosion protection; Cracking; Fatigue cracking; Steel; Structural analysis; Welds
• Old TRIS Terms: Steel corrosion; Weld corrosion
• Subject Areas: Bridges and other structures; Construction; Marine Transportation;

Filing Info

• Accession Number: 00174233
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 31 1978 12:00AM