| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Directed Energy Deposition of CoCrFeMnNi High Entropy Alloy: Influence of Process Parameters on Thermal Cycles and Microstructural Evolution |
| Author(s) |
Nishkarsh Srivastava, Amit Arora |
| On-Site Speaker (Planned) |
Nishkarsh Srivastava |
| Abstract Scope |
Conventional casting methods such as vacuum arc-melting and drop casting, commonly used for fabricating High Entropy Alloys (HEA), are costly and inefficient, especially for components with complex shapes. Laser-Directed Energy Deposition (L-DED) deposition is an additive manufacturing technique capable of creating complex structures using HEAs. Numerical process simulation can be useful to optimize the process parameters for the defect-free printing of parts with desired properties. In the present study, a three-dimensional heat transfer and material flow model is developed to simulate the thermal behaviour of multi-layer deposition using CoCrFeMnNi high entropy alloy. The thermal cycles, melt pool dimension and cooling rates are calculated for the multi-layer deposition. Further, a Kinetic Monte Carlo (KMC) Potts model is used to predict the microstructure evolution under varying process parameters. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Solidification |