About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Design of Intrinsically Balling-Resistant Alloys: A Physics-informed and Data-enabled Approach |
Author(s) |
Brent G. Vela, Seth Mehalic, Sofia Sheikh, Alaa Elwany, Ibrahim Karaman, Raymundo Arroyave |
On-Site Speaker (Planned) |
Brent G. Vela |
Abstract Scope |
Historically, additive manufacturing (AM) has been framed in terms of the need to tune processing conditions for a particular AM technology in order to print conventional alloys, oftentimes developed for fabrication methods other than AM. There are significant opportunities to design alloys specifically for AM. A key challenge in realizing this is that alloy design requires optimizable composition-based performance metrics to guide the exploration of the alloy chemistry space. We propose a novel composition-based indicator of balling based on intrinsic thermophysical properties at AM-relevant conditions, namely the ratio between the characteristic spreading and solidification times of a molten alloy droplet. By identifying these intrinsic properties, it is possible to incorporate ‘intrinsic printability’, specifically ‘intrinsic resistance to balling’, into AM-focused alloy design. The proposed indicator is used to train machine learning classifiers to predict balling and validated against an experimental dataset mined from the literature, demonstrating the utility of said indicator. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |