Experimental and theoretical study of WC-40Fe-20Co-40Ni

The liquid phase formation temperatures of the quinary system W-C-Co-Fe-Ni with a ratio of Fe:Co:Ni = 40:20:40 were determined by means of DSC analysis. Besides, the experimental C-window of this system with a binder content of 14.3 +/- 2 wt% is accurately defined. Based on the experimental results, a thermodynamic modelling is carried out using the CALPHAD approach. Temperature-composition sections of the W-C-Co-Fe-Ni system with different binder contents are calculated to verify the rationality of the present modelling. There is a good correlation between the experimental and calculated results showing that the experimental data can be well reproduced by the present modelling.

Automated summary

The liquid phase formation temperatures of the quinary system W-C-Co-Fe-Ni with a ratio of Fe:Co:Ni = 40:20:40 were determined using DSC analysis with an accurately defined experimental C-window of this system with binder content of 14.3 +/- 2 wt%. Thermodynamic modelling was carried out using the CALPHAD approach and temperature-composition sections of the system with different binder contents were calculated to verify the rationality of the modelling. A good correlation between experimental and calculated results was observed, indicating that the experimental data can be well reproduced by the present modelling.