About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Accelerated Recyclability Assessment of 316L using Laser Powder Bed Fusion and Ultrasonic Atomisation in a Revert Loop |
Author(s) |
Edward Palmer, Shahin Mehraban, Daniel Butcher , Gavin Stratford , Nicholas Lavery |
On-Site Speaker (Planned) |
Edward Palmer |
Abstract Scope |
The ability to regenerate high-quality powder from printed components offers economic and environmental advantages in additive manufacturing (AM). Previous ageing studies re-using powder show relatively little impact with numerous cycles, allowing powder revert recycling strategies to account for longer shelf life. However, with growing industrial uptake of AM, there is a need to consider recycling strategies which consider both powder revert and waste material (e.g. powder at end of life, support structures and components), minimising environmental impact and promoting the circular economy of metal powders.
This study investigates the recyclability of 316L parts produced via Laser Powder Bed Fusion (L-PBF) by repeatedly building and directly re-atomising parts using ultrasonic powder atomisation. The re-atomised powder is compared to the virgin powder for compositional (including oxygen and nitrogen), morphological and rheological changes. Printed parts made from the re-atomised powder are compared to virgin counterparts for changes in microstructure, hardness, and density. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |