| 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 |
Bulk Single Crystals in Cubic Systems Produced via Electron Beam Melting Additive Manufacturing |
| Author(s) |
Patxi Fernandez-Zelaia, Michael Kirka, Sebastien Dryepondt, Yousub Lee, Christopher Ledford |
| On-Site Speaker (Planned) |
Patxi Fernandez-Zelaia |
| Abstract Scope |
Electron beam melting (EBM) additive manufacturing technologies are utilized for the processing of defect free high temperature metals. The precise control over the rapidly moving heat source enables site specific microstructure control. Recent works have shown the feasibility of printing bulk scale Ni-based superalloy single crystals via EBM. A grain selection mechanism, which is yet to be fully understood, generates crystals with a [001] build direction preference and [011] preference perpendicular to the line scan direction. In this work we investigate the mechanisms which drive this anomalous texture selection in several Ni-based superalloy systems using space-fill design of experiments, novel microstructure quantifiers, and physics based simulations. The inferred knowledge is utilized to generate novel microstructures not possible via traditional casting techniques. Feasibility for generating these structures in other high temperature cubic material systems is also demonstrated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, ICME, Process Technology |