About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
High-Temperature Deformation Behavior of Additively Manufactured GRX-810 |
| Author(s) |
Eliott Wallace, Glenn H. Balbus, Gianna Valentino |
| On-Site Speaker (Planned) |
Eliott Wallace |
| Abstract Scope |
GRX-810 is a novel oxide-dispersion strengthened Ni-base superalloy developed by NASA to bridge the performance gap between conventional Ni-base and refractory alloys. Derived from the medium-entropy alloy NiCoCr, GRX-810 exhibits exceptional strength and creep resistance beyond 1000°C, significantly outperforming most existing additively manufactured (AM) Ni-base alloys. In this study, we investigate the high-temperature tensile behavior of laser powder bed fusion GRX-810 using a custom Gleeble thermomechanical simulator with AM-specific tensile geometries. Strain rate jump tests are performed across four orders of magnitude in strain rate (5×10-3 s-1 to 20 s-1) and at temperatures from 800 to 1200°C to evaluate activation volume and strain rate sensitivity. These measurements, along with post-mortem transmission electron microscopy to examine microstructural evolution, will provide insight into thermally activated deformation mechanisms and microstructural stability at high temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, High-Temperature Materials, Additive Manufacturing |