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)
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Presentation Title |
Designing an Industrially Implementable Framework to Design Additive Recycling Invariant Powder LPBF Feedstocks via Alloy 718 |
Author(s) |
Tayler W. Sundermann, Raymundo Arroyave, Alaa Elwany, Ibrahim Karaman |
On-Site Speaker (Planned) |
Tayler W. Sundermann |
Abstract Scope |
Precision metal additive manufacturing is a high growth industrial technology, however, cost represents a significant roadblock for widespread adoption. In powder bed fusion technologies powder feedstock constitutes the bulk of machine operation cost, and the entire volume of a powder bed must be filled regardless of volume consumed by the part; additionally, off-the-shelf powders are overwhelmingly considered as single use consumable materials. To decrease the cost and drive efficiency, a practical solution is to recycle powder used in previous builds. Unfortunately, recycling of powders is not trivial. Measurement techniques that are staples from powder metallurgy are not ideal for additively manufactured powders, and do not reliably inform build outcomes. The present work offers a detailed framework on powder feedstock characterization considering powder morphology, composition, and behavior and dictating cost effective testing strategies to determine differences, physically normalize, and reintroduce powder to create feedstocks recyclable until they’re consumed in a build. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |