About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
High Entropy Alloys VIII
|
Presentation Title |
J-65: Tailoring Multi-principal Element (MPE) Alloy Compositions based on Competing Deformation Mechanisms |
Author(s) |
K V Vamsi, Marie-Agathe Charpagne, Anton Van der Ven, Tresa M. Pollock |
On-Site Speaker (Planned) |
K V Vamsi |
Abstract Scope |
The potential compositional space for multi-principal element alloys is large, posing challenges for identification of promising new compositions. In this work, we propose a high-throughput framework to explore the FCC/HCP MPE composition space with respective to competing deformation mechanisms: slip and twinning. A “twinnability” criteria that is dependent on the relative magnitudes of stable and unstable stacking fault energies was deployed as a design parameter. Using Ni-Co-Ru as a model system, the synergistic effects of the relevant fault energies and their influence on twinnability have been investigated. Electronic structure calculations were performed to estimate the structural energies and bulk properties to predict propensity for twinning in ternary Ni-Co-Ru. Predicted behavior will be compared to experimental observations for selected compositions |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |