| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Residual Stress Prediction and Neutron Validation for Functionally Graded High Temperature Materials of IN718 and C103 |
| Author(s) |
Yousub Lee, James Haley, Brian jordan, Soumya Nag |
| On-Site Speaker (Planned) |
Yousub Lee |
| Abstract Scope |
Blown-powder directed energy deposition (DED) is a promising manufacturing technique for the fabrication of functionally graded materials (FGMs). It enables to change powder flow rate resulting in changes of compositions during printing. FGMs of nickel-based alloy, IN718 to niobium-based alloy, C103 are an attractive option for turbine and aerospace industries as they can take advantages of both high strength and high-temperature resistance. However, the joining of these two materials is challenging because of non-linear composition gradient, brittle intermetallic phase, cracking susceptibility, and mismatch in thermal expansion coefficient (CTE) between the two materials. In this study, we focus on development of thermo-mechanical simulation to understand the effect of residual stress evolution on integrity of FGMs structure. Four benchmark samples of IN718, C103, and two FGMs with different compositions at the transition zone are printed. The residual stress will be measured using neutron diffraction for the model validation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, High-Temperature Materials |