About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
Presentation Title |
Development of an environmentally friendly and low-cost binder for 17-4PH metal part printing via Fused Deposition Modeling |
Author(s) |
Sheyda Khazaee, Etienne Martin, Jovan Kostenov, William Regnaud, Rachid Boukhili, Elie Bitar-Nehme |
On-Site Speaker (Planned) |
Etienne Martin |
Abstract Scope |
Using wax as a binder in metal fused deposition modeling (mFDM) offers benefits like easy removal, environmental friendliness, and lower costs compared to other polymers. However, wax-based binders usually lead to structural instability during heat treatment. This study aims to optimize a feedstock consisting of 17-4PH stainless steel powder (< 95.5wt.%), paraffin wax (< 5.3wt.%), and stearic acid (< 0.69wt.%) for FDM. Rheology analysis showed that increasing the metal content from 93 to 95.5wt.% significantly raises viscosity but retains printability by adjusting the temperature. Mechanical, physical, and structural properties of the green and/or sintered parts were evaluated through three-point bending tests, density measurements, debinding, and sintering. Higher metal content improved green parts' flexural strength from 3.34 to 4.45 MPa and relative green density from 0.65 to 0.74. Components with at least 95wt.% metal powder exhibited full structural stability post-sintering, achieving densities over 0.97. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Environmental Effects, Shaping and Forming |