About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys
|
Presentation Title |
Improvement of Co-Cr-Ni-Ta Mobility Descriptions |
Author(s) |
Kil-Won Moon, Carelyn E. Campbell |
On-Site Speaker (Planned) |
Kil-Won Moon |
Abstract Scope |
Interdiffusion data of five binaries and four ternaries were employed to improve the Co-Cr-Ni-Ta mobility descriptions. The current optimization method was the combination with a simulated annealing method and DICTRA calculations. The parameters were optimized based on the least square errors between the composition profiles of interdiffusion experiment data and calculated composition profiles by DICTRA. The advantage of this method is that multicomponent composition profiles can be employed to optimize without calculating diffusion coefficients. For quaternary system, all parameters except the ternary interaction parameters were cross-checked by at least two different alloy systems. When there was a discrepancy in the parameter, the selection was made by the parameter that had a smaller error after considering all related interdiffusion data at the same time. The challenges of implementing the optimized parameters into the database will be discussed. |
Proceedings Inclusion? |
Planned: |