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ASTM Selected Technical Papers
Progress in Additive Manufacturing 2020
By
Nima Shamsaei
Nima Shamsaei
Symposium Chair and STP Editor
1
Auburn University
,
Auburn, AL,
US
Search for other works by this author on:
Mohsen Seifi
Mohsen Seifi
Symposium Chair and STP Editor
2
ASTM International
,
Washington, DC,
US
Search for other works by this author on:
ISBN:
978-0-8031-7721-5
No. of Pages:
432
Publisher:
ASTM International
Publication date:
2022

In this paper, preliminary results on the feasibility of reusing unmelted feedstock material in powder-blown laser Directed Energy Deposition are reported. The environmental impact assessment and sustainability aspects of laser Directed Energy Deposition are also illustrated. Inconel 625 powder was used and cuboids samples were deposited on stainless steel 316 substrate. The unmelted powder was collected and characterized and then reused four times to build samples for five cycles of deposition, without the addition of more virgin powder. Promising results toward the adoption of powder reuse in laser Directed Energy Deposition processes, in terms of powder physical and chemical characteristics, were obtained. The environmental impact analysis highlighted that powder reuse will generate significant savings that will contribute to the sustainability of the laser Directed Energy Deposition process.

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