About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Sintering and Related Powder Processing Science and Technologies
|
| Presentation Title |
Sintering of Binder Jetted Stainless Steel 316L Components: Dimensional and Geometrical Changes |
| Author(s) |
Elisa Torresani, Thomas Grippi, Marco Zago, Ilaria Cristofolini, Alberto Molinari, Eugene A. Olevsky |
| On-Site Speaker (Planned) |
Elisa Torresani |
| Abstract Scope |
In this study, the sintering behavior of stainless steel 316L components produced by binder jetting process is explored. It investigates the effects of initial particle/pores distribution, gravity, and friction on sintering, leading to anisotropic shrinkage and shape distortions. Dilatometry tests were conducted to experimentally investigate the anisotropy behavior and microstructural evolution at different sintering temperatures.
The influence of the gravity and friction forces during sintering are experimentally investigated through the analysis of the distortions developed in sintered parts. Moreover, a novel sintering simulation framework for gravity-affected sintering of stainless-steel, including the Rios-Olevsky-Hryha sintering model, is presented. It encompasses the constitutive law of sintering including material constants that account for the powder packing effects and the delta-ferrite transformation occurring at high-temperatures. In parallel to macroscopic FEM simulations, a Monte Carlo simulation tailored on sintered binder jetting samples and scanned via XRayCT, has been developed to characterize anisotropy at microscale. |