An assessment of the Fe-C-Si system

Experimental and Thermodynamic Studies of the Fe–Si Binary System

“…Figure 13 shows calculated phase diagrams of the Fe-Si binary system, in which not only the B2 but also the D03 ordered structures were taken into account. Abnormal miscibility gap in the liquid phase at high temperatures, which was obtained in the previous thermodynamic assessment, 8) disappears by optimizing the parameters of liquid appropriately. At high temperatures, both the A2/B2 and B2/D03 second-order boundaries meet the solidus curve.…”

“…Thermodynamic calculations of the Fe-Si systems were carried out by Lacaze and Sundman. 8) Results of their calculations are shown in Figs. 3(a) and 3(b), in which there are still some debatable points.…”

Development of thermophysical calculator for stainless steel casting alloys by using CALPHAD approach

“…CALPHAD is based on evaluating Gibbs free energy by using thermodynamic parameters from various phase diagrams published. The proposed models for approximation of full Gibbs energy of phases of multicomponent alloys system are used, as published in the previous articles [1][2] . In the majority of multi-component alloy systems, liquid and solid phases are considered as substitutional solution and interstitional solution.…”

Assessment of the ternary Fe–Si–B phase diagram

“…The thermodynamic parameters for the binary Fe-Si and Si-B systems were taken from [27] and [28], respectively. The Fe-B system has been assessed several times [2,[29][30][31][32], however the amorphous and metastable phases have been treated only by Palumbo [2] although without resorting to the Shao's model for the former.…”

“…The Fe-Si and Si-B binaries are taken, respectively, from the work of [27] and [28] in addition to the binary Fe-B just obtained. In the assessment procedure we optimized the parameters relative to the ternary compounds Fe 5 Si 2 B, Fe 4.7 SiB 2 and Fe 2 Si 0.4 B 0.6 and those relative to the ternary interaction parameter of the liquid.…”