| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Innovations in High Entropy Alloys and Bulk Metallic Glasses: An SMD & FMD Symposium in Honor of Peter K. Liaw
|
| Presentation Title |
Tracer Diffusion in High-entropy Alloys: the Impact of Constituents and Composition |
| Author(s) |
Gerhard H. Wilde |
| On-Site Speaker (Planned) |
Gerhard H. Wilde |
| Abstract Scope |
High entropy alloys (HEA) attract an increased attention as a potential structural material due to outstanding mechanical and physical properties. With this work, we contribute to understanding the diffusion kinetics of HEA that is critical concerning their phase stability and deformation behavior, particularly at elevated temperatures. Furthermore, the influence of the phase composition on diffusion, particularly at grain boundaries in these alloys was also examined. These combined measurements directly address the debate about sluggish diffusion by investigating self-diffusion. Additionally, the diffusion coefficients for self-diffusion of the constituent elements are determined in polycrystalline HEA as a function of composition and for varying numbers of constituents in the solid solution. The impact of composition, number of constituents, nature of constituents and homologous temperature on volume and grain boundary self-diffusion are critically discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |