About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Refractory Metallic Materials
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Presentation Title |
An Open-Source Numerical Model for Mitigating Refractory Alloy Hot Cracking Susceptibility |
Author(s) |
Jeffrey W. Sowards, Andrew O'Connor, Fredrick Michael, Carly Romnes, Fernando Reyes Tirado, Omar Mireles |
On-Site Speaker (Planned) |
Andrew O'Connor |
Abstract Scope |
Refractory alloys are susceptible to solidification cracking during welding and 3D printing. Composition control is an effective method of controlling solidification cracking. This work evaluates the effect of compositional variation in refractory metal systems on a computed solidification cracking susceptibility. A numerical model has been developed using Python code and open-source CALPHAD software to calculate Kou’s crack susceptibility index. The model is validated against past weldability studies performed on several refractory alloy systems. The approach is extended towards the development of new alloys with improved 3D printability and weldability and is shown to have utility in defining compositional limits for existing alloys and feedstocks. Furthermore, the model will aid in determining process controls for powder reuse and recycling. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, High-Temperature Materials |