| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development III -- Super Materials and Extreme Environments
|
| Presentation Title |
Microstructure Evolution of Metallic Alloys under Additive Manufacturing Conditions |
| Author(s) |
Amy J. Clarke, Jonah Klemm-Toole, Behnam Aminahmadi, Chloe Johnson, Alec Saville, Brian Rodgers, Jeremy Shin, Kamel Fezzaa, Sven Vogel, Joseph McKeown, Tresa Pollock, Alain Karma |
| On-Site Speaker (Planned) |
Amy J. Clarke |
| Abstract Scope |
Solidification is the first step encountered during additive manufacturing (AM). Combinations of thermal gradient and solid/liquid interface velocity are known to significantly impact microstructure (and defect) evolution, including potential grain refinement produced by the columnar to equiaxed transition. A deeper understanding of solidification and solid state phase transformations under AM conditions is needed to guide the design of alloys for AM. We must ultimately match microstructure evolution to the conditions experienced during AM, including repeated cycles of heating and cooling. In-situ visualization by experimentation and modeling of phase transformations and microstructure evolution is needed to achieve this aim. Here we highlight new insights into microstructure evolution under AM conditions obtained by multiscale, in-situ/ex-situ characterization of metallic alloys, including conventional alloys, model alloys, and alloys designed for AM. These results will inform AM alloy development and enable the prediction and control of microstructure and property evolution under AM conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Solidification |