About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Synthetic Microstructure Modeling of Additively Manufactured Inconel 718 |
| Author(s) |
Warren Nadvornick, Erick Ramirez, Xueyong Qu |
| On-Site Speaker (Planned) |
Warren Nadvornick |
| Abstract Scope |
Additive manufacturing (AM) is quickly being adopted in the aerospace industry for its cost and performance advantages over traditional manufacturing methods. AM processes, however, are prone to developing porosity that can be detrimental to an AM part’s fatigue properties. This paper presents a computational method of generating synthetic microstructures for AM Inconel 718 based on electron backscatter diffraction (EBSD) data to better understand the material behavior and to predict failure mechanisms. As-built grain morphology, including columnarity in the build direction, is tailored using the open-source software DREAM.3D, and process-induced porosity is introduced in the microstructure mimicking the keyhole and lack-of-fusion pores commonly produced by the AM process. The resulting representative volume element (RVE) is converted to a finite element model for mechanical simulations and the results are compared with literature. Sensitivity studies are performed by varying the pore nature, shape, and size to determine the overall impact to fatigue properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
ICME, Additive Manufacturing, Modeling and Simulation |