| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Effect of Creep Deformation on the Strain Heterogeneities Localization Inside Complex Microstructures Found within Centrifugally Cast HP40Nb Reformer Tubes |
| Author(s) |
Thibaut Dessolier, Wouter Hamer, Martin Church, Ben Britton |
| On-Site Speaker (Planned) |
Thibaut Dessolier |
| Abstract Scope |
Reformer tubes are exposed to high temperature for a long period during the production of hydrogen gas, and these tubes are manufactured using centrifugal casting of high nickel alloys. This creates complex through-wall microstructure (equiaxed and columnar along tube section). We focus on understanding strain partitioning due to creep deformation using high temperature deformation at low strain rates, to replicate in-service behaviour. Deformation mechanisms are characterised measured by using high spatial resolution digital image correlation (HR-DIC) and high angular resolution electron backscatter diffraction (HR-EBSD) during well-controlled in situ creep tests within the SEM. These results are correlated with as-crept samples extracted from service to provide translation of our findings to real world conditions. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |