About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Advanced Refractory Alloys for Use at Temperatures above 1273K |
Author(s) |
Oleg N. Senkov, Satish I Rao, Todd M. Butler, Tinuade Daboiku, Eric J. Payton |
On-Site Speaker (Planned) |
Oleg N. Senkov |
Abstract Scope |
New Nb-Mo-Zr based refractory alloys will be reported. These alloys have been developed to replace heavy, expensive and difficult to process commercial Nb alloys, such as C-3009, for use at temperatures up to 1873K. The density of the alloys is in the range from 7.6 to 8.6 g/cc. The alloys have a BCC matrix phase, and they also contain small amounts of secondary phases, which are rich in Zr and have BCC, FCC, hexagonal or monoclinic crystal structures depending on the concentration of other alloying elements, including oxygen and nitrogen. In the temperature range from 298K to 1873K, the alloys are ductile and have higher specific strength than C-3009. The strengthening mechanisms responsible for the observed temperature dependence of the yield stress of the alloys will be discussed. |
Proceedings Inclusion? |
Planned: |