| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Effects of Powder Morphology and Capillary Phenomena in Liquid Phase Sintering of Binder Jet Additively Fabricated WC-Co Composite |
| Author(s) |
K N Chaithanya Kumar, Mohan Sai Ramalingam, Sameehan Joshi, Shashank Sharma, Narendra B. Dahotre |
| On-Site Speaker (Planned) |
K N Chaithanya Kumar |
| Abstract Scope |
Binder Jet Additive Manufacturing (BJAM) is an energy- and cost-efficient process for producing materials with complex geometries and minimal residual stress. However, BJAM-fabricated components need to undergo sintering to achieve higher densification, making it crucial to understand the role of powder morphology. Typically, spherical powders are preferred for higher flowability and powder bed density, but their sintering performance compared to non-spherical powders needs further investigation. This study computationally analyzed capillary forces and pressures during liquid phase sintering of BJAM-fabricated WC-10 wt.% Co composites. An integrated two-particle computational approach was adopted for morphologies gradually transitioning from spherical to cubical. Results showed higher capillary force as particle morphology shifted to non-spherical, highest capillary pressure for rounded cube morphologies. This model confirmed limited sintering in spherical particles compared to non-spherical particles. Our findings offer valuable insights into powder morphology and its role in liquid phase sintering, with significant implications for optimizing BJAM processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Ceramics, Other |