About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Correlation between Electrochemical and Standard Testing of Aluminum Alloys |
Author(s) |
Matjaž Finšgar, Irena Lesjak, Varuzan M. Kevorkijan, Marko Degiampietro |
On-Site Speaker (Planned) |
Varuzan M. Kevorkijan |
Abstract Scope |
This work reports on a corrosion study of different aluminum alloys of series 2xxx (AA2011, AA2014, AA2024, AA2030, and EN AW 2030) in a 5 wt.% NaCl water solution. The corrosion was investigated using the standard PV113 test and a series of different electrochemical measurements (chronopotentiometry, electrochemical impedance spectroscopy, and cyclic polarization) lasting 72 h. A possible correlation between the maximum penetration depth due to corrosion into the base material, caused by the standard PV113 test, and the time of electrochemical fatigue was investigated.
It was found that a linear correlation exists between the penetration depth in the base material and the electrochemical fatigue time for most of the alloys tested. Moreover, a correlation between the electrochemical fatigue methods and the PV113 test exists for materials that were the most susceptible to intergranular corrosion. Furthermore, it was demonstrated that electrochemical fatigue is suitable for inducing intergranular corrosion. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Characterization, Other |