About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Influence of Mg Concentration on the Inhibiting Effect of CO<sub>2</sub> on the Oxidation Rate of Aluminum Alloys 5182 and 6016 |
| Author(s) |
Cathrine K.W. Solem, Egil Solberg, Gabriella Tranell, Ragnhild Elizabeth Aune |
| On-Site Speaker (Planned) |
Cathrine K.W. Solem |
| Abstract Scope |
Oxidation of aluminum alloys during production is a well-known problem and contributes to significant metal losses. As small additions of CO<sub>2</sub> in the atmosphere has proven to inhibit the oxidation rate for high-Mg (≥ 5wt%) aluminum alloys, the present study has aimed at evaluate its effect on alloys with varying Mg concentration, i.e. 5182 (AlMg4.6Mn0.4 ) and 6016 (AlSi1.2Mg0.4 ). Experiments were performed by STA using three different cover gases, i.e. 80% synthetic air and 20% argon, 99.999% argon and 4% CO2, 20% argon and 76% synthetic air, while monitoring the mass change and heat flux at 750°C for 7 h. A significant inhibiting effect was observed for the 5182 alloy during exposure to CO<sub>2</sub> when compared to the results obtained for synthetic air and argon. A similar effect was observed for the 6016 alloy to a lesser extent due to the lower Mg concentration. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Other, |