| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
A Molecular Dynamics Multi-Particle Model for Modeling Hot-Press Sintering Process of HEAs Combined with Phase-Field Simulation |
| Author(s) |
Yuhong Zhao |
| On-Site Speaker (Planned) |
Yuhong Zhao |
| Abstract Scope |
The existing molecular dynamics hot sintering models are only single crystal models without pressure effects. We propose a MD multi particle model and construct a hot-press sintering phase-field model based on MD parameters to accurately simulate necking, pore formation/filling, and particle rearrangement during the hot-press sintering process of polycrystalline Al0.3CoCrFeNi high entropy alloy, verifying the accuracy and effectiveness of the MD multi particle model. It was also found that when the particle contact zone evolved from pressure induced to exponential creep zone, the occurrence rate of necking, pore formation/filling, dislocation accumulation/decomposition, particle rotation/rearrangement, and other phenomena accelerated. The Young’s modulus of the sintered Al0.3CoCrFeNi high entropy alloy is 214.11±1.03 GPa, with a deviation of only 0.82% from the experimental data. This new MD multi-particle model provides a good tool for studying the hot-pressing sintering process of actual HEAs and traditional alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, ICME, Modeling and Simulation |