| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
High-temperature deformation in Nb-based alloy C103 (Nb-10Hf-1Ti) |
| Author(s) |
Eric M. Taleff, Thomas J. Bennett |
| On-Site Speaker (Planned) |
Eric M. Taleff |
| Abstract Scope |
The commercial Nb-based alloy C103 (Nb-10Hf-1Ti) is important to applications requiring temperatures well in excess of 1000°C. New data for the plastic deformation of C103 from 1550 to 1750°C will be presented and placed in the context of data previously available in the literature. The new data unambiguously demonstrate deformation controlled by solute-drag creep (SDC), supporting suggestions of previous investigators. The transient deformation behaviors from SDC are important to interpreting existing creep data. A high strain-rate sensitivity produced tensile elongations of 150 to 200%. Deformation by SDC created a complex microstructure of coarse subgrains and steep strain gradients at large strains. The new understanding produced for C103 has important ramifications for melt-state processing, as used in many additive manufacturing technologies. These will be discussed with strategies for developing new creep-resistant refractory metal alloys that can effectively use solid-solution strengthening. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, |