| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
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| Presentation Title |
Microstructure and Heterogeneous Deformation of Functionally Integrated Materials Fabricated by Directed Energy Deposition Additive Manufacturing |
| Author(s) |
Xin Wang, Baolong Zheng, Brandon Fields, Jacob Norman, Benjamin MacDonald, Lorenzo Valdevit, Enrique Lavernia, Julie Schoenung |
| On-Site Speaker (Planned) |
Xin Wang |
| Abstract Scope |
Directed energy deposition (DED) additive manufacturing enables precise composition control at the micron scale for the development of functionally integrated materials (FIMs) with site-specific functionality. This strategy provides a path to the rapid development of novel alloys and components with location-dependent chemical composition and functionalities. This talk demonstrates the FIMs concept using two material systems: stainless steel 316L with Haynes 282 nickel superalloy and pure nickel with alloyed nickel-aluminum. Extensive 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 microstructure, interfaces, dislocation structure, and phase transformations that occur during the DED process. Micro-indentation, in-situ micropillar compression, and bulk tensile testing complemented by digital image correlation (DIC) methods were employed to understand the heterogeneous deformation behavior. The analyses provide insights into the deformation and strengthening mechanisms induced by the heterogeneous structure of the FIMs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |