| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Atomistic Exploration of Orientation-Dependent Tribological Properties of CrCoNiFe at Elevated Temperatures |
| Author(s) |
Anton Matthew Hengst, Jonathan Cappola, Wenjun Cai, Zhengyu Zhang, Lin Li |
| On-Site Speaker (Planned) |
Anton Matthew Hengst |
| Abstract Scope |
CrCoNiFe, a derivative of the CoCrFeNiMo high entropy alloy
(HEA), is renowned for its exceptional mechanical performance. This study explores the tribological properties of CrCoNiFe for
varying Cr content and temperatures by molecular dynamical modeling of single-crystal nano scratching. We observe significant orientation-dependent variation in the modeled coefficient of friction, with lubricious orientations favoring the activation of the [112] stacking fault in the scratching direction. By systematically characterizing the coefficient of friction and specific cutting energy of these modeled samples based on the crystallographic orientation within the fundamental zone, we advance toward a tribological model for randomly oriented polycrystalline CrCoNiFe used in extreme environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, High-Temperature Materials |