| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Identification of Nanoparticles Dispersion Mechanism in 316L Matrix Additively Manufactured By
hybrid Process of Ink Jetting and Laser Powder Bed Fusion
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| Author(s) |
Somayeh Pasebani, Milad Ghayoor, Joshua Gess, Bryce Cox |
| On-Site Speaker (Planned) |
Somayeh Pasebani |
| Abstract Scope |
Oxide dispersion strengthened (ODS) alloys are metal-matrix composites in which oxide nanoparticles suppress grain boundary mobility at elevated temperature; enhancing grain growth and creep resistance. In this work, two different additive manufacturing processes were proposed to disperse nanoparticles of Al2O3 into the 316L stainless steel matrix with the aid of laser powder bed fusion (LPBF), and the microstructural evolution was investigated. First, 316L SS powder and alumina particles were mixed and used as feedstock for producing 316L ODS alloy. Second, ink-jetting in the LPBF process was utilized to manufacture 316L ODS. The ink, containing Al13 nanoclusters, was selectively deposited into the 316L powder bed, and then laser consolidated metal powder and nanoclusters into nanocomposite. Detailed microstructural characterization revealed that both Al2O3 and Al13 were melted, precipitated as Al-enriched nanoparticles, and homogenously dispersed in the matrix upon solidification. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |