About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
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Presentation Title |
In-situ TEM Thermal Cycling of AM Steel |
Author(s) |
Manas Upadhyay, Eva Héripré, Lluís Yedra Cardona, Alexandre Tanguy, Simon Hallais, Sylvain Durbecq, Thien-Nga Lê |
On-Site Speaker (Planned) |
Manas Upadhyay |
Abstract Scope |
In recent years, increasing research efforts have been dedicated to better understand the origin of far-from-equilibrium microstructure during additive manufacturing (AM) of metals/alloys. Most experiment/modeling efforts aim at studying the role of melt-pool dynamics and rapid solidification on microstructure formation. However, we are interested in studying the solid-state microstructural evolutions occurring after solidification, i.e. during thermal cycling due to the continuation of the building process; large thermo-mechanical driving forces are generated during thermal cycling which result in important microstructural changes. In this talk, we will present some interesting results from a series of in-situ thermal cycling tests performed on AM steel lamellae in a transmission electron microscope. 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 thermal cycling, that the material would experience during AM, inside a transmission electron microscope to facilitate in-situ observations. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |