About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture
|
| Presentation Title |
Determining the Interactive Role of Pore and Grain Structures on Fracture Behavior of Additive Manufactured Metals Using 3D Microstructure Measurements and Numerical Modeling |
| Author(s) |
Allison Richards, Laura Vietz, Claire Ticknor, Hemant Sharma, Peter Kenesei, Dillon Watring, Jake Benzing, Orion Kafka, Newell Moser, Nik Hrabe, Ashley Spear |
| On-Site Speaker (Planned) |
Allison Richards |
| Abstract Scope |
It is well known that metal additive manufacturing (AM) processes can introduce void defects into printed parts, and many efforts are underway to minimize such defects through process optimization. While it is commonly accepted that pore defects tend to govern fracture behavior in AM metals, the point at which grain structure plays a more dominant role than void defects remains unknown. The objective of this research is to explore the rank-order transition point of fracture-dominating features from critical void defect(s) to critical grain structure. Volumetric microstructure measurements acquired by high-energy X-ray diffraction microscopy are combined with an elasto-viscoplastic fast Fourier transform modeling framework to investigate the onset of damage and fracture by systematically manipulating void characteristics within the experimentally characterized volume. As metal AM continues to shape the future of advanced manufacturing, these results offer insight into the transition point between pore-driven and grain-driven fracture mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Other |