| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Quantifying Environmentally-assisted Cracking In-situ in Ar and s-CO2 Environments |
| Author(s) |
Andrew Meyer Brittan, Camila Toledo Torres, Peter Beck, Lucas Teeter, Samuel Briggs, Guillaume Mignot, Sebastien Teysseyre, Julie Tucker |
| On-Site Speaker (Planned) |
Andrew Meyer Brittan |
| Abstract Scope |
As energy demand increases worldwide, the need for higher efficiency forms of power generation becomes more urgent. The supercritical carbon dioxide (s-CO2) Brayton cycle has shown the potential to fill this need with a thermal efficiency which can surpass 50% for operating temperatures over 700°C. However, analysis of mechanical performance of materials in s-CO2 is required before a commercially viable s-CO2 Brayton cycle system can be distributed. Oregon State University has developed the capability to perform creep and fatigue crack growth measurements in-situ at elevated temperatures and pressures using the direct current potential drop method. In this study, crack growth analysis of 316SS is performed in air, Ar, and s-CO2 at high temperature. These three environments provide the ability to compare crack growth at high temperature under different conditions of environmental assistance: no corrosion (Ar); oxidation (air); and oxidation plus carburization (s-CO2). |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |