About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
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| Presentation Title |
In-situ TEM Solid-state Thermal Cycling of a Stainless Steel Fabricated via AM |
| Author(s) |
Manas V. Upadhyay, Lluis Yedra-Cardona, Eva Héripré, Simon Hallais, Alexandre Tanguy |
| On-Site Speaker (Planned) |
Manas V. Upadhyay |
| Abstract Scope |
Currently, most experimental/modeling efforts are aimed at studying the role of melt-pool dynamics and rapid solidification on microstructure formation during additive manufacturing (AM). However, we are interested in studying the solid-state microstructural evolution occurring after solidification, i.e. during solid-state thermal cycling (SSTC) due to the continuation of the building process; large thermo-mechanical driving forces are generated during SSTC which can result in important microstructural changes. In this talk, some novel results from a series of in-situ TEM SSTC experiments performed on an AM steel will be presented. The motivation behind these tests comes from the intractability of following in-situ microstructural changes during AM within the processing chamber. Instead, we reproduce the same SSTC, that the material would experience during AM, inside a TEM to facilitate in-situ observations. The in-situ TEM experiments provide novel insight on the changes induced by SSTC to the submicron-sized precipitates and dislocation structures. |
| Proceedings Inclusion? |
Planned: |