SCC behavior of an Al-3. 7wt%Zn-2. 5wt%Mg alloys before and after welding in 3. 5% NaCl solution
- China Steel Corp., Kaohsiung (Taiwan, Province of China)
The behavior of stress corrosion cracking (SCC) of an overaged Al-3.7wt%Zn-2.5wt%Mg alloy including base metal, weldment, and heat-affected zone (HAZ) in 3.5% NaCl solution was investigated. This Al-Zn-Mg alloy loaded in longitudinal or long transverse direction has good SCC resistance and is maintained even after welding. Welding residual stress alone does not induce the SCC of the weldment. The result of the specially modified type 1 double cantilever beam (DCB) testing shows that the crack can be arrested by the weld metal because of the better SCC resistance of the filler metal ER5183. In addition, a specially designed type 2 DCB testing indicates that the SCC resistance of the HAZ is better than that of the base metal because of the re-overaging of the HAZ during welding.
- OSTI ID:
- 6463191
- Journal Information:
- Corrosion (Houston); (United States), Vol. 49:1; ISSN 0010-9312
- Country of Publication:
- United States
- Language:
- English
Similar Records
SCC Initiation in Alloy 600 Heat Affected Zones Exposed to High Temperature Water
CHARACTERIZATION OF DEFECTS IN ALLOY 152, 52 AND 52M WELDS
Related Subjects
ALUMINIUM BASE ALLOYS
STRESS CORROSION
WELDING
MAGNESIUM ALLOYS
ZINC ALLOYS
AQUEOUS SOLUTIONS
CORROSION RESISTANCE
CRACK PROPAGATION
HEAT AFFECTED ZONE
MATERIALS TESTING
RESIDUAL STRESSES
SODIUM CHLORIDES
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CORROSION
DISPERSIONS
FABRICATION
HALIDES
HALOGEN COMPOUNDS
JOINING
MIXTURES
SODIUM COMPOUNDS
SOLUTIONS
STRESSES
TESTING
ZONES
360105* - Metals & Alloys- Corrosion & Erosion
360101 - Metals & Alloys- Preparation & Fabrication