About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Microstructure and Heterogeneous Deformation Behavior of Functionally Integrated Materials (FIMs) Processed via Directed Energy Deposition (DED) |
Author(s) |
Xin Wang, Baolong Zheng, Brandon Fields, Benjamin E. MacDonald, Penghui Cao, Lorenzo Vadelvit, Enrique J. Lavernia, Julie M. Schoenung |
On-Site Speaker (Planned) |
Xin Wang |
Abstract Scope |
Integrating dissimilar materials in a single component via directed energy deposition (DED) offers new possibilities for designing and engineering material properties and functionalities. However, it poses challenges due to disparities in the properties of different materials and insufficient bonding at the interfaces. In this study, we co-deposit 316L stainless steel and Haynes 282 powders via DED to create functionally integrated materials (FIMs) with compositional transitions at varying step sizes. Various analytical techniques, including scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM), are employed to investigate the unconventional multi-material microstructure of the FIMs at different length scales. To uncover the heterogeneous deformation characteristics, the tensile behavior of the FIMs is evaluated in combination with digital image correlation (DIC). Additionally, indentation tests are conducted before and after tensile deformation to gain insight into the strengthening mechanisms induced by heterogeneous deformation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |