About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Additive Manufacturing and Cellular/Lattice Structures: Designs, Realization and Applications
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Presentation Title |
Localized Strain, Microstructure, and Property Control of Ti-5553 Lattice Materials |
Author(s) |
Caleb Andrews, Jenny Wang, Maria Strantza, Manyalibo J Matthews, Mitra L. Taheri |
On-Site Speaker (Planned) |
Caleb Andrews |
Abstract Scope |
The laser powder bed fusion additive manufacturing (L-PBF AM) process generates complex microstructures and residual strains across length scales which can be tuned via the manufacturing controls of the L-PBF process, and allows for local and programmatic variation of microstructures across a given build volume. This localized control could be utilized to unlock an additional degree of control by varying microstructure, strain, and mechanical properties across the lattice. By enabling this ‘0th order’ microscale level of tuneability, struts and nodes within lattices are tailored microstructurally to deliver different mechanical properties locally. A combined approach of melt pool monitoring in-situ, high resolution electron backscattering diffraction ex-situ, and micromechanical measurements across the lattice will demonstrate a feedback loop of how changes in the L-PBF parameter space create effects on the local microstructure which can be tied to lattice cell properties, and enable greater tuneability in architected materials. |