| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Mechanistic Studies of Intergranular Stress Corrosion Cracking in Al-Mg Alloys under Atmospheric Exposure Conditions |
| Author(s) |
Patrick Steiner, James Burns |
| On-Site Speaker (Planned) |
Patrick Steiner |
| Abstract Scope |
To date the majority of IG-SCC studies have been performed in electrochemically controlled immersion environments. These can differ drastically from atmospheric environments, that are more typical of real-life service conditions, and have been seen to highly affect the underlying IG-SCC mechanism and crack growth rates as compared to analogous immersion studies. Atmospheric environments are generally characterized by three key parameters: 1) a decrease in solution volume and water layer thickness 2) an increase in solution ion concentrations, especially chloride, and 3) the removal of any external governing potentiostat or cathodic source. The resulting effects of these key characteristics are complex and often contradictory, thus in order to gain a clear picture of the governing factor(s) controlling atmospheric environment IG-SCC growth an effort has been made to individually isolate the effects of each of the key parameters to better inform pertinent modelling and mitigation strategies originally derived from full immersion environments. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |