About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
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Symposium
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5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
3D Characterization of Grain Structure and In-situ Deformation of Open-cell Metal Foam Using Micro-computed Tomography and High-energy X-ray Diffraction Microscopy |
Author(s) |
Quinton Johnson, Jayden Plumb, Peter Kenesei, Hemant Sharma, Jun-Sang Park, Ashley D. Spear |
On-Site Speaker (Planned) |
Ashley D. Spear |
Abstract Scope |
Ultra-low-density foams have complex hierarchical structures that give rise to desirable properties like high strength-to-weight ratio and excellent energy absorption. The sparse, fragile network of struts in open-cell foams makes characterizing sub-strut-scale material structure especially challenging. In this work, 3D grain and precipitate structures are characterized for open-cell aluminum foam using synchrotron characterization techniques. X-ray computed tomography and high-energy X-ray diffraction microscopy data were collected in-situ at interrupted loading intervals during compression. A novel scanning strategy developed at the APS 1-ID beamline enabled complete characterization of a 6%-dense foam sample that was four times larger than the X-ray beam width. A data-analysis procedure was developed to track grains through large strut displacement and deformation. The 3D precipitate maps were used to correlate ligament failure to precipitate distributions. The methods and procedures developed here can be applied to other low-density structures (e.g., AM lattices) and enable new possibilities for high-fidelity modeling. |
Proceedings Inclusion? |
Definite: Other |