| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics and Kinetics of Alloys
|
| Presentation Title |
Evaluation and Assessment of Interdiffusion Coefficients and Atomic Mobility in FCC Al-Cu-V |
| Author(s) |
Yang Yang, David Christianson, Michele Viola Manuel |
| On-Site Speaker (Planned) |
Yang Yang |
| Abstract Scope |
Solute additions of Si and Cu into industrial aluminum alloys are widely used to increase castability and ambient strengthening properties. The studies of adding rare earth elements into aluminum alloys are getting much more attention in recent decades since they have shown to improve the high-temperature performance. The optimization of the heat treatment on these alloys is critical to maximizing both the alloy’s ambient and high-temperature properties. However, currently there are not reliable kinetic descriptions of this system. Therefore, this study developed a kinetic mobility database to describe the FCC Al-Cu-V system using the experimental diffusion couple approach. The concentration profiles of Cu and V were measured using electron probe microanalysis (EPMA). The forward-simulation analysis (FSA) was employed to extract the interdiffusion coefficients. The experimentally determined diffusivities were then used to assess the mobility parameters utilizing the DICTRA Thermo-Calc Software package. The accuracy of the assessed parameters were then experimentally validated. |
| Proceedings Inclusion? |
Planned: |