dr THERMO PROFILE ANALYSIS OF (Fe-Ni-Cx (X=0.3-0.5), (Fe-Cr-Cx (X=0.3-0.5) SYSTEMS USING PROPERTY MODULE CALCULATOR AND CALPHAD METHOD.

THERMO PROFILE ANALYSIS OF (Fe-Ni-Cx (X=0.3-0.5), (Fe-Cr-Cx (X=0.3-0.5) SYSTEMS USING PROPERTY MODULE CALCULATOR AND CALPHAD METHOD.

Abstract

The paper shows the thermodynamic study of alloy Fe-Cr-C, Fe-Ni-C system using modeling and simulation based tools. The thermo-calc software with Calphad method is utilized for calculations with FeDemo databases. The calculation shows modeling and simulations of the alloys at (1900K-2000K) temperature range. The atmospheric pressure is kept constant 10⁶pascal. The active phase at 1900K is liquid phase with 0.36381 mass percent of Cr, 0.29667 of Fe and 1.00 for C compositions with the total Gibbs energy of -49493.08959j/mol. The withstanding phase is graphite with the thermal expansion coefficient of 0.85021m³ and the 1.00 for C. As seen from the table of diffusion simulations, at the time 30 seconds, the mass percent of the carbon varies as from 0.15211-064.the alloy shows the less activity of carbon in the highest temperature in the Fe-Ni-C alloy system. The highest T-zero is noted 1184.63794 of value. The temperature is noted 500-3000K in the Fe-Cr-C system. The alloy shows the less solubility of the carbon at low temperature, while results the great alloying at higher temperature in the Fe-Ni-C system with T-zero of1184.22907 values with temperature period of 500-3000K .