About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
A Review of Plastic Flow and Microstructure Evolution at Elevated-temperatures in Unalloyed Niobium |
Author(s) |
Emily Brady, Eric M. Taleff |
On-Site Speaker (Planned) |
Emily Brady |
Abstract Scope |
Plastic deformation and microstructure evolution in low-impurity niobium sheet materials at elevated temperatures are investigated. Uniaxial tension tests at 10-4 s-1 and faster at temperatures from 1200 to 1500℃ are used to measure flow stresses and evaluate dynamic grain growth behaviors. Grain sizes and shapes are characterized after static annealing (static case) and after tensile testing (dynamic case). Flow behaviors and microstructures of niobium sheet materials are compared with historical data from the literature. The data produced are used to determine the creep mechanism active in low-impurity niobium and gain insight into microstructure evolution during deformation. |
Proceedings Inclusion? |
Planned: |