| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Hume-Rothery Symposium: Accelerated Measurements and Predictions of Thermodynamics and Kinetics for Materials Design and Discovery
|
| Presentation Title |
A Diffusion Mobility Database for γ/ γ' Co-Superalloys |
| Author(s) |
Carelyn E. Campbell, Kil-won Moon, Maureen Williams, Greta Lindwall |
| On-Site Speaker (Planned) |
Carelyn E. Campbell |
| Abstract Scope |
Building on a previously developed Ni-based diffusion mobility database and using a newly developed Co-based thermodynamic database, a new Co-based diffusion database that includes Co-Al-W-Ni-Cr-Ta-Ti is presented. In addition to available literature data, new experimental and computational diffusion data are combined to construct this multicomponent diffusion mobility description. Diffusion couple stacks, based on the diffusion-multiple method pioneered by J-C Zhao, are used to obtain additional diffusion mobility data for 9 binary and 14 ternary systems at three different temperatures. The diffusion couple composition profiles are analyzed and then used to optimize the FCC (//947;) phase mobility parameters. Specific results for these optimizations will be presented for the Co-Al-W-Ni, Co-Al-Ni-Cr and Co-Al-Ni-Ta systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Computational Materials Science & Engineering, ICME |