Stability Criteria for Intergranular Corrosion of AA5083-H131
Abstract
The high strength-to-weight ratios, excellent uniform corrosion resistance, and weldability of Al-Mg alloys make them lightweight substitutes for steel in marine structures. The vulnerability of these alloys becomes apparent after extended periods in service environments, making the alloys sensitized due to the preferential grain boundary precipitation of the more anodic β-phase (Al3Mg2), satisfying an electrochemical condition for an intergranular corrosion (IGC) path. The increasing body of research on IGC of AA5083, resulted in several established characteristics such as the IGC spreading potential, the IGC propagation threshold potential, and the critical IGC propagation current density.[1-3] However, the roles of these parameters on IGC stability remain unexplored.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 07, 2015
- Source ID
- 10.1149/ma2015-02/14/687
Entities
People
- Elissa Trueman
- John R. Scully
- Mary Lyn C. Lim
- Robert G. Kelly