| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Opportunities and Applications of Solid-State Additive Manufacturing Processes
|
| Presentation Title |
CALPHAD-Based ICME Design of Cobalt-Free High Entropy Alloy Binder for Cemented Carbides |
| Author(s) |
Pocket Pizzutillo, Soumya Sridar, Wei Xiong |
| On-Site Speaker (Planned) |
Pocket Pizzutillo |
| Abstract Scope |
Cemented carbides are widely used as cutting tools consisting of hard WC grains with a ductile metallic binder. The common metallic binder is Co, which is carcinogenic with a high cost. This necessitates the search for alternate Co-free binders that are non-toxic and cheap. High entropy alloys (HEA) with an equimolar or near equimolar ratio are suitable candidates since they are single-phase solid solutions with high ductility. Therefore, a proper design of an HEA binder for cemented carbides based on the process-structure-property relationship is essential. In this work, the CALPHAD-based ICME (CALPHAD: Calculation of Phase Diagrams, ICME: Integrated Computational Materials Engineering) framework will be employed to design an HEA binder. Thermodynamic calculations will be employed to screen the alloy compositions to achieve a large carbon window with no roofing effect. Diffusion studies will be performed to understand the interaction between the designed HEA and WC to improve the sinterability. |