About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Thermal Analysis of Potential High Entropy Alloy Binder Alternatives for Tungsten Carbide |
Author(s) |
Jannette L. Chorney, Jerome P. Downey, K. V. Sudhakar, Morgan Ashbaugh, Grant Wallace |
On-Site Speaker (Planned) |
Jannette L. Chorney |
Abstract Scope |
Cobalt has been the predominant binder for tungsten carbides for almost one hundred years. However, a suitable substitute is required because cobalt faces supply risks, is in high demand for other applications, and is a known carcinogen. Select high entropy alloys (HEAs) are being investigated as potential alternatives to cobalt. However, published fundamental data are lacking for these alloys. Characterization of the high entropy alloys allows for operating parameter identification and optimization for sintering. Phase transition onset temperatures, the kinetic components of heat flow, and green binder vaporization temperatures have been determined by differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), modulated differential scanning calorimetry (MDSC), and thermodynamic modeling for the selected HEAs. |
Proceedings Inclusion? |
Planned: |