About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
|
Presentation Title |
Study of Solidification Behavior in Laser Additive Manufacturing Using Synchrotron X-ray Diffraction |
Author(s) |
Adrita Dass, Atieh Moridi |
On-Site Speaker (Planned) |
Atieh Moridi |
Abstract Scope |
Understanding the dynamic solidification behavior during metal additive manufacturing (AM) is essential as it directly influences final microstructures, defects and therefore mechanical properties of the part. Novel in-operando x-ray experiments at different spatial and temporal resolutions provide an unprecedented opportunity to develop a new understanding of the underlying physics of the AM process and solidification in cooling rates applicable to beam-based AM. Here we demonstrate a novel approach using synchrotron x-ray diffraction to link the ‘mushy zone’ during solidification and solidification parameters for Inconel 625. Using this approach, we calculate the melt pool and mushy zone dimensions, along with real-time thermal gradient, cooling rate and solidification front velocity, all by virtue of tracking real-time changes in lattice parameters. We also estimate the dendritic arm spacings and the grain structure expected in the part. Results are corroborated with microscopy analysis of the printed structures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, |