| About this Abstract |
| Meeting |
3rd World Congress on High Entropy Alloys (HEA 2023)
|
| Symposium
|
HEA 2023
|
| Presentation Title |
3D Ink Extrusion Printing of CoCrFeNi and (Zr0.50Ti0.35Nb0.15)80Al20 Microlattices |
| Author(s) |
Ya-Chu Hsu, Dingchang Zhang, Ming Chen, David C. Dunand |
| On-Site Speaker (Planned) |
Ya-Chu Hsu |
| Abstract Scope |
The preparation of high-entropy alloys (HEAs) via 3D ink-extrusion printing has been increasingly used in the past few years. Green bodies with complex shapes can be printed layer by layer by using powder-loaded liquid ink at room temperature. This method offers flexibility in using elemental, oxide, or hydride powders and avoids the problems of residual stress and textured microstructure. In this work, microlattices with open channels are 3D ink-extrusion printed from inks containing a powder blend of oxides and graphite powders. Metallic CoCrFeNi alloy microlattices are then achieved by co-reduction in different atmospheres and sintering. Compression properties of sintered CoCrFeNi microlattices are measured at room temperature.
Microlattices of the (Zr0.50Ti0.35Nb0.15)80Al20 alloy are created via 3D extrusion of inks containing ZrH2, Ti, Nb, and TiAl3 powders. Further hydride decomposition, elemental interdiffusion, homogenization, and densification of the struts of the microlattices were studied. Their compressive properties are measured at elevated temperatures. |
| Proceedings Inclusion? |
Planned: Metallurgical and Materials Transactions |