| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Design Approaches and Experiences V
|
| Presentation Title |
Design of Ni-Co-Ru Multi-principal Elements Alloys |
| Author(s) |
Marie Charpagne, K. V. Vamsi, Carolina Frey, Yolita Eggeler, Sean Murray, Tresa M. Pollock |
| On-Site Speaker (Planned) |
Marie Charpagne |
| Abstract Scope |
Toward the goal of designing new strong yet ductile multi-principal element face-centered cubic alloys, materials with potentially low stacking fault energies have been targeted. Exploration of phase equilibria via thermodynamic databases highlighted the Ni-Co-Ru ternary as a potentially promising system. Following first-principles calculations, several Ni,Co,Ru alloys of stable FCC structure have been cast and thermo-mechanically processed. Among them, the Ni2Co2Ru compound exhibits a higher yield strength compared to the well-studied NiCoCr ‘medium-entropy’ alloy. It is also very prone to deformation twinning, at room temperature and up to 400-600°C, where slip becomes the main deformation mechanism. The deformation mechanisms as a function of strain and temperature will be discussed in detail, supported by calculations of planar fault energies. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |