Abstract

Thermodynamic calculations of phase equilibria can be used as a tool for alloy development. In the present work, a thermodynamic description of the Fe-Mo-C-N system is presented. The description of this system forms an important basis for thermodynamic calculations in sintered steels. Previously presented thermodynamic descriptions are combined with a new description of the Mo-C-N system, and equilibria in the quarternary system are calculated. New experiments were performed in the FeMo-C-N system to confirm the calculated results. Experimental results for equilibria with N2 gas at pressures close to 1 arm show good agreement with calculated equilibria.

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