About this Abstract |
Meeting |
2024 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 III
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Presentation Title |
How Accurately Can One Determine Temperature and Heating/Cooling Rates from Time-resolved Synchrotron Diffraction Experiments during AM? |
Author(s) |
Steve Gaudez, Daniel Weisz-Patrault, Kouider Abdellah Abdesselam, Veijo Honkimäki, Steven Van Petegem, Manas Upadhyay |
On-Site Speaker (Planned) |
Manas Upadhyay |
Abstract Scope |
Lattice parameters extracted from time-resolved synchrotron diffraction experiments during additive manufacturing (AM) are often used to determine temperature and heating/cooling rates. It is typically assumed that the changes in lattice parameter occur mainly due to temperature changes, and the effect of internal stresses and chemical heterogeneity are negligible. In this study, we quantify the errors associated with this assumption. To that end, time-resolved synchrotron diffraction experiments during AM of 316L stainless steel have been performed at the ID31 beamline (ESRF, France) with a dedicated miniaturized laser metal deposition machine; 316L has been chosen because of the absence of solid-state phase transformation during AM; thus, lattice parameter changes are only due to thermo-mechanical effects. A fast numerical model is then calibrated using the residual strain measurements and used to decipher the contributions of temperature and stresses on lattice parameter. The surprising results of this study will be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Characterization, Other |