On the Solubility of Chromium in Cubic Carbides in WC-Co-MC-Systems
| Autor: | Susanne Norgren, Mattias Elfwing, Anders Eriksson, Alexandra Kusoffsky |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Alloy Metallurgy Analytical chemistry chemistry.chemical_element engineering.material Condensed Matter Physics Microstructure Gibbs free energy Carbide symbols.namesake Chromium chemistry Mechanics of Materials engineering symbols General Materials Science Graphite Solubility |
| Zdroj: | Materials Science Forum. :1217-1220 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.534-536.1217 |
| Popis: | The solubility of Cr in cubic carbides in the systems WC-Co-TaC and WC-Co-ZrC has been determined using equilibrium samples. Thermodynamic calculations were used to design the alloys through extrapolations of Gibbs energy expressions. The alloys were designed to have a microstructure containing the following phases: WC, liquid, M 7 C 3 , graphite and cubic carbide. The samples were equilibrated at 1410 °C. The alloys were investigated using scanning electron microscopy and analyzed using energy-dispersive X-ray spectrometry. The present work shows how the Cr solubility depends on which cubic carbide former that is present. The WC-Co-Cr-Zr alloy has no detectable amount of Cr in the cubic carbide, whereas the WC-Co-Cr-Ta alloy has 12 % Cr in the cubic carbide. |
| Databáze: | OpenAIRE |
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