| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Influence of Temperature and Print Orientation on Anisotropy Sintering in Binder Jet Stainless Steels |
| Author(s) |
Khadijeh Esmati, Apratim Chakraborty, Srinivas Pendurti, Arunkumar Natarajan, Étienne Martin, Leon Desgagnes |
| On-Site Speaker (Planned) |
Leon Desgagnes |
| Abstract Scope |
Binder jetting shows great promise for high-throughput mass production of metal parts with complex geometries. However, primitive lines formed during the process produce anisotropic sintering shrinkage, which complicates new parts design. In this study, the effect of temperature (between 1000 °C and 1400 °C) on the microstructure and activation energy for sintering two stainless steels (316L and 17-4 PH) is evaluated. Shrinkages along the three major orientations with respect to the powder bed are considered to link sintering kinetics to the material anisotropic behavior. The effect of particle size distribution on the anisotropic shrinkage factor is also discussed. In both materials, the anisotropic shrinkage factor increases with the amount of δ-ferrite observed in the microstructure and the green density. The maximum shrinkage occurs along the build direction due to the formation of primitive lines, while the minimum shrinkage occurs along the recoating direction. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Iron and Steel |