About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Heterostructured and Gradient Materials (HGM V): New Mechanistic Discoveries Enabling Superior Properties
|
Presentation Title |
Designing Materials with Heterogeneous Microstructure via Additive Manufacturing |
Author(s) |
Matteo Seita, Karl Sofinowski, Shubo Gao, Crystal Feng Ji |
On-Site Speaker (Planned) |
Matteo Seita |
Abstract Scope |
One of the defining features of fusion-based additive manufacturing (AM) processes is the localized melting of metal by a high-energy source, which fuses the material together point by point into a 3-D part. By varying the processing parameters at any point across the build, it is possible to control the solidification of the material and drive the formation of different microstructures. This unique capability opens the path to designing and producing metal parts with arbitrary microstructures from the bottom-up. Here, we give two examples of this strategy and produce stainless steels with heterogeneous microstructures and unique mechanical properties. The first consists of samples with crystallographic texture gradients, which exhibit superplastic-like behavior. The second involves lamellar samples comprising of hard and soft microstructures, which evince additional—and tunable—hardening mechanisms. These two examples showcase the possibility of designing parts with advanced functionalities by controlling the microstructure of materials site-specifically during AM. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Mechanical Properties |