On the solubility of chromium in the cubic carbide and M sub(7)C sub(3) carbide in the WC-Co-Cr-Me systems (Me = Ti, Nb, Ta and Zr)

The solubility of Cr in cubic carbides in the systems WC-Co-TiC and WC-Co-NbC 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...

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Bibliographic Details
Published in:International journal of refractory metals & hard materials 2013-09, Vol.40
Main Authors: Norgren, S, Kusoffsky, A
Format: Article
Language:English
Subjects:
Alloys
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Summary:The solubility of Cr in cubic carbides in the systems WC-Co-TiC and WC-Co-NbC 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 sub(7)C sub(3), graphite and cubic carbide. The alloys were investigated using scanning electron microscopy and analyzed using energy-dispersive X-ray spectrometry. The present work shows how Cr solubility depends on which cubic carbide former is present.
ISSN:0263-4368