| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
| Presentation Title |
Prediction of Solidification Cracking in Rene 80 Superalloy during the Directed Energy Deposition Process |
| Author(s) |
Hamed Hosseinzadeh, Lang Yuan, Luke Mohr, Lee Kerwin, Anindya Bhaduri, Arushi Dhakad, Chen Shen, Shenyan Huang, Changjie Sun, Alexander L Kitt |
| On-Site Speaker (Planned) |
Hamed Hosseinzadeh |
| Abstract Scope |
Avoiding solidification cracks is one of the requirements to successfully manufacture high gramma prime superalloys by Additive Manufacturing. In this research, an analytical model based on the RDG model was developed to predict the susceptibility of solidification cracks in Rene 80 via the directed energy deposition process. Taking into account the solidification path calculated by ThermoCalc, local thermal history via the process model for DED, and thermal strain via finite element models, the analytical model shows a promising capability to estimate the crack formation in Rene 80. This predictive model was examined over a wide range of print parameters, including laser power, speed, spot size, and feed rate, to account for different local cooling rates and thermal gradients. Thin wall samples of Rene 80 were fabricated to calibrate and validate the proposed model. This development provides a practical and physics-based method to evaluate the solidification cracking in additively manufactured alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Computational Materials Science & Engineering, Solidification |