| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Metal Powder Synthesis and Processing
|
| Presentation Title |
A Framework for Powder Evaluation with Reuse in Laser Powder Bed Fusion Additive Manufacturing |
| Author(s) |
Chinmay Phutela, Federico Bosio, Nesma Aboulkhair |
| On-Site Speaker (Planned) |
Chinmay Phutela |
| Abstract Scope |
Metal additive manufacturing processes such as, Laser Powder Bed Fusion (L-PBF), promise expedited production times to fabricate complex componentry with extended design freedom in both digital and material domains from powder feedstock. Existing powder production techniques are capital intensive in nature and only feasible for large-batch production. Therefore, they cannot cope with the growing interest in material design and in-situ alloying. Rapid feedstock screening methods are essential for the progression of in-situ alloying in developing the next generation L-PBF alloys. Commonly used powder blending techniques increase inhomogeneities in the powder bulk properties and hence the inter-batch processability variation. This study presents a comprehensive approach for feedstock characterisation at the particle level and bulk properties for blended powder. More importantly, the evolution of the feedstock with re-use is investigated. A systematic approach is developed to compensate for the powder heterogeneity and the structural integrity of AM-built parts produced via in-situ alloying. |