Phase Diagram in Iron-rich Corner of the Fe-Cr-Mo-V-C System below 1000 K

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Authors	KROUPA Aleš COUFALOVÁ Martina HAVRÁNKOVÁ Jitka COUFALOVÁ Martina SVOBODA Milan VŘEŠŤÁL Jan
Year of publication	2001
Type	Article in Periodical
Magazine / Source	Journal of Phase Equilibria
MU Faculty or unit	Faculty of Informatics
Citation
Field	Thermodynamics
Keywords	Thermodynamics; Phase Diagrams; Iron; Chromium; Molybdenum; Vanadium; Carbon
Description	Relevant experimental phase equilibria were used with the THERMOCALC program to refine thermodynamic parameters for low-temperature region, in the steels with composition 0.4 to 2.5 wt.% Cr, 0 to 1 wt.% Mo, and 0 to 0.5 wt.% V. The refined parameters were used to calculate phase relationships, which were then compared with experimental results. Results of experiments indicate that M7C3 replaces M23C6 carbides in the temperature region betweeen 773 and 873 K. Similar behavior was also found for molybdenum-rich phases M6C and M2C. Some modifications of existing thermodynamic parameters in the low temperature region were necessary.
Related projects:	The thermodynamics of equilibrium states and kinetics of phase transformations in the transition metals based systems with N and C Kinetics of carbide precipitation in Cr-Mo steels