About this Abstract |
Meeting |
Materials Science & Technology 2020
|
Symposium
|
Additive Manufacturing: Materials, Alloy Development, Microstructure and Properties
|
Presentation Title |
Metal Powder Recyclability within Binder Jet Additive Manufacturing Process |
Author(s) |
Saereh Mirzababaei, Brian K. Paul, Somayeh Pasebani |
On-Site Speaker (Planned) |
Somayeh Pasebani |
Abstract Scope |
This work determines the level of 316L stainless steel powder recyclability within binder jetting process. Results of powder characterization demonstrate a 22% increase in the number of coarse particles (≥30μm) with an 18.2% reduction in the number of fine particles (≤10μm) after recycling 316L stainless steel powder sixteen times. Few elongated and irregular-shaped particles were found after recycling, possibly due to particle agglomeration and handling and sieving of powder. A negligible increase in oxygen content by 0.0359%±0.001 was detected in the recycled powder. Density of the sintered part produced using recycled powder was 1.5% lower than the part produced using new powder due to changes in particle size distribution and the flowability of the powder caused by changes in morphology. Final built parts, using new and recycled powder, showed similar hardness (155±2.71 HV and 165±8.6 HV) and yield strength (206±16 MPa and 192±10 MPa), respectively. |