| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-8: Additive Manufacturing of Carbon Steels via Direct Reduction of Oxide Precursor Inks and Gas Carburization |
| Author(s) |
Elias G. Winterscheidt, Collin Stiers, Joshua Kacher |
| On-Site Speaker (Planned) |
Elias G. Winterscheidt |
| Abstract Scope |
Carbon steels are one of the most ubiquitous materials in the modern world due to their excellent mechanical properties and well-developed manufacturing process. However, they remain difficult to fabricate by laser and energy based additive manufacturing techniques due to their poor weldability, which can induce porosity and cracking in sintered parts. In this study, iron oxide is mixed with graded volatility solvents and a polymer binder to create a viscous, printable, shear thinning ink which is extruded into three-dimensional parts. The polymer binder is then burnt off, and the samples are reduced in a hydrogen-rich atmosphere. The elemental iron then undergoes through-thickness carburization by gas-carburizing the porous metallic microstructure. The steel is then sintered in an argon atmosphere, resulting in a near-full density part. This presentation will demonstrate the viability of manufacturing fully carburized, high density steel parts using the method above. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Iron and Steel, Extraction and Processing |