About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Effect of Deoxidizer Addition on Melt Pool Oxidation of AISI 316L during SLM Process |
Author(s) |
Seong Gyu Chung, Durim Eo, Jung Wook Cho |
On-Site Speaker (Planned) |
Seong Gyu Chung |
Abstract Scope |
AISI 316L stainless steel is the most abundant austenitic stainless steel that primarily constituents after irons, and chromium (~16 wt%)nickel and molybdenum with small quantities of silicon and manganese. Selective Laser Melting (SLM) is known for highest cooling rate (10^6)(K/s) among all additive manufacturing technique differently with Laser Metal Deposition(LMD). The major evaluation that have made in this research was effect of additional deoxidizer components (Si and Mn) in AISI 316L stainless powder by changing shielding gas flow rate and process parameters in Selective Laser Melting (SLM) process. Compositional ratio differences of silicon and manganese in AISI 316L could affect volumetric energy density, porosity, and mechanical property of specimen by changing argon gas flow rate and process parameters. Oxidation and reduction behavior during SLM process was analyzed, and wetting behavior of oxide layer was studied. Major oxide dispersion strengthening effect was finalized as cellular wall formation and Orowan strengthening mechanism. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Powder Materials |