| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing: Materials, Alloy Development, Microstructure and Properties
|
| Presentation Title |
A New Sintering Process for Binder-Jet Printed 625 Alloy |
| Author(s) |
Chuyuan Zheng, Pierangeli Rodriguez de Vecchis, Markus Chmielus, Ian Nettleship |
| On-Site Speaker (Planned) |
Chuyuan Zheng |
| Abstract Scope |
For non-beam based additive manufacturing (AM) technologies, such as binder-jet 3D printing (BJ3DP), the issue of remnant porosity can drastically limit the mechanical properties of printed metal parts. Previous work by our group has demonstrated that supersolidus liquid phase sintering (SLPS) facilitates the particle rearrangement required to remove large printing defects before final stage sintering. However, prolonged SLPS resulted in chemical segregation at the grain boundaries and rapid grain growth. In this work a novel sintering process is being developed to activate particle rearrangement but avoid chemical segregation in the sintered part. The effect of the sintering process on microstructure evolution will be presented using quantitative results from 2D (by optical microscopy and SEM) and 3D (by X-ray computed tomography) microstructure measurements. |