| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
| Presentation Title |
Numerical Simulation of the Phase Transformation Dynamics of γ′ during Electron Beam Powder Bed Fusion of IN738 Ni-based Superalloy |
| Author(s) |
Nana Kwabena Adomako, Nima Haghdadi, James Dingle, Xiaozhou Liao, Simon Ringer, Sophie Primig |
| On-Site Speaker (Planned) |
Nana Kwabena Adomako |
| Abstract Scope |
Electron beam powder bed fusion (E-PBF) is an additive manufacturing (AM) process that enables fabrication of high-performance nickel-based superalloys such as IN738 for applications in modern aero-engines. While the γ′ phase is responsible for the excellent high-temperature properties of this alloy, a complete understanding of its evolution during printing is currently lacking as most studies focus on the processability and mechanical properties of the finished product. In this study, we introduce an alternate technique to provide new insights into the dynamic behavior of γ′ during the consecutive deposition E-PBF process. This involves computational simulations with thermo-kinetic and thermal analysis software packages. The thermo-kinetic software (MatCalc) performs numerical precipitation kinetics simulations with input from thermal analysis software (ORNL semi-analytical code), which simulates the multiple E-PBF thermal cycles. A good correlation is observed between simulation and experimental measurements, indicating that the simulation method can help design AM parameters for optimum materials properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Phase Transformations, Modeling and Simulation |