About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Accelerated Design of γ′-strengthened Co-base Superalloys with Improved Comprehensive Performances |
Author(s) |
Qiang Feng, Longfei Li, Wendao Li, Min Zou, Xiaoli Zhuang, Ji-Cheng Zhao |
On-Site Speaker (Planned) |
Qiang Feng |
Abstract Scope |
Novel γ′-strengthened Co-base alloys can provide unique solutions to the limitations of Ni-base superalloys, however, only a few of γ′-strengthened Co-base superalloys with good comprehensive performances have been reported due to the limited knowledge of alloying element effects. In our recent work, the multicomponent diffusion multiple method was used to investigate the individual and interactive effects of different alloying elements, e.g. Ni, Cr, Al, W, Ti, Ta, Mo, Nb, on the long-term microstructural stability of γ′-strengthened Co-base superalloys at the target service temperatures of single-crystal or wrought superalloy, with the help of the machine learning method which can establish the relationships between compositional variations and microstructural stabilities based on the data set of diffusion multiples. In combination with our experimental investigations, multicomponent γ′-strengthened Co-base superalloys with well balance of long-term microstructural stability, strength and oxidation resistance could be developed for different service purposes, such as turbine blades and disks. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Copper / Nickel / Cobalt, ICME |