Effect of Cr and V on phase equilibria in Co–WC based hardmetals
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Karin Frisk
Abstract
New measurements of the influence of Cr and V on the melting temperature of the binder phase in Co-based hardmetals are presented. It was shown that both Cr and V affect the melting temperature significantly. Cr decreases the melting temperature by over 100°C, and V by approximately 40°C. This is due to the high solubility of Cr and V in liquid Co, and this solubility was determined by experiments and calculations. The solubility of Cr in solid fcc-Co is also discussed, as well as the composition of the MC, M7C3 and the M6C carbides in alloys with Cr and V. The new experimental information is used to obtain a reliable thermodynamic description of the binder phase (Co-rich) in C – Co – Cr – W and C – Co – V – W alloys. Calculated equilibria are compared with experiments.
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© 2008, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Christoph Schwink 80 years
- Basic
- Initial stage of bi-modal microstructure in TiO2-doped α-Al2O3 ceramics induced by SiO2 impurity
- Statistical thermodynamic approach to molten Fe–Cr–P
- Phase diagram of the iron-rich portion in the iron–gallium–aluminum ternary system
- Isothermal section at 773 K of the Gd–Er–Co ternary system
- Thermophysical properties of Nd-, Er-, YNi-alloys
- Influence of carbides and of the dendritic orientation on the thermal expansion of Ni-base, Co-base and Fe-base simple cast alloys
- Influence of previous ageing treatments on the strength of an Al-4.3 wt.% Mg-1.2 wt.% Cu alloy processed by ECAE
- Applied
- Formation and microstructure of (Ti, V)C-reinforced iron-matrix composites using self-propagating high-temperature synthesis
- Effect of Cr and V on phase equilibria in Co–WC based hardmetals
- Thermodynamic modeling of the Cu–Se system
- Phase transition in the Fe–V system
- Microstructural changes at the ultra-precision machined surface of Zn–Al based alloy
- Study of structural and electrical properties of arsenic ferrites
- Study of thin film structure based on MgF2, CeO2 and Al2O3 layers for optical applications
- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Christoph Schwink 80 years
- Basic
- Initial stage of bi-modal microstructure in TiO2-doped α-Al2O3 ceramics induced by SiO2 impurity
- Statistical thermodynamic approach to molten Fe–Cr–P
- Phase diagram of the iron-rich portion in the iron–gallium–aluminum ternary system
- Isothermal section at 773 K of the Gd–Er–Co ternary system
- Thermophysical properties of Nd-, Er-, YNi-alloys
- Influence of carbides and of the dendritic orientation on the thermal expansion of Ni-base, Co-base and Fe-base simple cast alloys
- Influence of previous ageing treatments on the strength of an Al-4.3 wt.% Mg-1.2 wt.% Cu alloy processed by ECAE
- Applied
- Formation and microstructure of (Ti, V)C-reinforced iron-matrix composites using self-propagating high-temperature synthesis
- Effect of Cr and V on phase equilibria in Co–WC based hardmetals
- Thermodynamic modeling of the Cu–Se system
- Phase transition in the Fe–V system
- Microstructural changes at the ultra-precision machined surface of Zn–Al based alloy
- Study of structural and electrical properties of arsenic ferrites
- Study of thin film structure based on MgF2, CeO2 and Al2O3 layers for optical applications
- Notifications
- DGM News
