| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Metallic Alloy Microstructure Evolution during Materials Processing |
| Author(s) |
Amy J. Clarke, Jonah Klemm-Toole, Kester Clarke, Alec Saville, Christopher Jasien, Gus Becker, Brian Rodgers, Jeremy Shin, Joseph McKeown, John Roehling, Damien Tourret, Sven Vogel, Jake Benzing, Adam Creuziger, Adam Pilchak, Kamel Fezzaa, Tao Sun, Tresa Pollock, Alain Karma |
| On-Site Speaker (Planned) |
Amy J. Clarke |
| Abstract Scope |
Advanced characterization tools are generating new knowledge about phase transformations and multiscale microstructure evolution in structural metallic alloys, particularly when multiple in-situ/ex-situ techniques are used. The use of x-rays, electrons, and/or neutrons to study structural metallic alloys during/after processing is highlighted, with particular emphasis on multiscale microstructure evolution. Examples are shown that link the solidification dynamics experienced under additive manufacturing (AM) conditions (i.e., beyond equilibrium and/or during complex thermal cycling) on microstructure selection and crystallographic orientations that develop in structural metallic alloys. For example, solid-liquid interface velocities are directly measured from real-time synchrotron x-ray imaging, thermal gradients are modeled, and complementary electron microscopy and crystallographic mapping are performed and compared to solidification theory (i.e., columnar-to-equiaxed transition predictions). In-situ/ex-situ characterization of structural metallic alloys produced during/by solidification reveals possible strategies for microstructural prediction and control during AM, which will ultimately aid in the qualification and certification of parts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Additive Manufacturing, Phase Transformations |