| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
| Presentation Title |
Better Understanding of Cracking Phenomena in High-Strength Superalloys through Multiphysics Modeling in Additive Manufacturing |
| Author(s) |
Marcus C. Lam |
| On-Site Speaker (Planned) |
Marcus C. Lam |
| Abstract Scope |
Multiphysics models can play a important role in analyzing cracking phenomena in high-strength superalloys produced by laser powder bed fusion (LPBF). LPBF offers the potential to create efficient high-temperature components for energy-generating devices such as gas turbines, nuclear reactors, and heat exchangers. However, the application of superalloys remains limited due to increased crack susceptibility and inferior microstructures. This presentation discusses the use of modeling in understanding the cracking phenomena in high-strength superalloys. Laser scanning parameters and scanning vector arrangements were examined, with microscopy and process modeling analyses employed to explain the solidification conditions forming the high-angle grain boundary (HAGB) cracking. Calibration measures and associated challenges will also be discussed. The results indicate the need for balanced consideration of cracking, productivity, and deformation. This work also highlights the important role of multiphysics models in advancing understanding of the LPBF process concerning cracking, promoting the broader application of superalloys in additive manufacturing. |