CORROSION TESTING OF WELDED COPPER-NICKEL CLAD STEEL
The shrimp boat "Copper Mariner" has a 90-10 copper nickel (CDA 706) hull. The investigation of the corrosion of weldments in copper nickel clad steel plate has shown a high incidence of failures following one year's exposure to sea water. The failures occur at an alloy transition zone between the weld bead and the cladding layer at which coring has occurred in the newly solidified metal. The relative susceptibility of this area of the welds is correlated to the iron content of the weld beads. The iron in the weld beads results from a solvent effect of the molten weld metal puddle on the steel plate. MIG spray welds made with low nickel content 67 alloy wire show the least incidence of failures.
International Copper Research Association, Inc.703 Third Avenue
New York, NY USA 10017
- Anthony, W H
- Popplewell, J M
- Brock, A J
- Publication Date: 1977-7
- Features: References;
- Pagination: 47 p.
- INCRA Research Report
- Issue Number: 227
- Publisher: International Copper Research Association, Inc.
- TRT Terms: Clad metals; Copper; Copper alloys; Corrosion; Corrosion tests; Failure analysis; Fillers (Materials); Metal coatings; Nickel alloys; Seawater; Shipbuilding materials; Welding; Welds
- Old TRIS Terms: Copper mariner; Weld corrosion; Welding filler materials
- Subject Areas: Bridges and other structures; Marine Transportation;
- Accession Number: 00174236
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: May 31 1978 12:00AM