| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
|
| Presentation Title |
Influence of Strain and Heating Rate on Grain Growth of Super Solvus Processed Powder Metallurgy Ni-based Superalloys |
| Author(s) |
Luis F. Arciniaga, Pascal Thome, I-Ting Ho, Sammy Tin |
| On-Site Speaker (Planned) |
Luis F. Arciniaga |
| Abstract Scope |
The sequence of microstructural changes occurring during super-solvus processing of a powder metallurgy (PM) Ni-based superalloy was studied using high resolution Electron Backscatter Diffraction (EBSD) coupled with Energy Dispersive X-Ray Spectroscopy (EDS). Starting with the consolidated billet, varying levels of isothermal strain were applied to understand grain growth trends after super-solvus heat treatment. Samples with varying strain levels were examined to understand the role of stored strain energy on grain size distribution of the heat-treated material. Samples were heat-treated to the super-solvus temperature at different ramp rates to allow for γ’ precipitates to dissolve into solution at different rates. Detailed microstructural analyses from the samples subject to variable heating rates and strain levels provide fundamental insight into the thermodynamic and kinetic driving forces of the grains during heat treatment. Results from the study will be presented and the impact of these findings on critical grain growth will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Characterization, Copper / Nickel / Cobalt |