1,721,130 research outputs found
An introduction to the CALPHAD method and the Compound Energy Formalism (CEF)
No full textThe CALPHAD (Calculation of phase diagrams) method and the Compound Energy Formalism (CEF) are briefly introduced and a few selected examples of their application are reported
Critical evaluation and thermodynamic modeling of the Al-Co-Fe system
No full textAn understanding of the thermodynamic and phase diagram data for the Al-Co-Fe system is essential for Co-based superalloys as well as high entropy alloys. In this study a thermodynamic assessment of the entire Al-Co-Fe system has been made according to the CALPHAD method after a critical review of the relevant literature data. The order-disorder model has been adopted to describe the A1/L12 and A2/B2 phase relations, respectively. Thermodynamic interaction parameters have been optimized, considering the available experimental data, especially about the complex equilibria arising from the interaction between chemical and magnetic ordering in the A2 and B2 phases. Several isothermal and vertical sections have been calculated and discussed in comparison with experimental results in the whole composition range. A satisfactory agreement was obtained
Thermodynamic modeling of some aluminium-rare earth binary systems: Al-La, Al-Ce and Al-Nd
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Validation and Application of the Genova High-Entropy Alloys (GHEA) Thermodynamic Database for Selected Multi-component Systems
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Thermodynamic modeling of the Al-Cr-Ni system over the entire composition and temperature range
No full textA thermodynamic reassessment of the entire Al-Cr-Ni system has been made, according to the CALPHAD method. Compared to the previous assessments, more recent experimental results have been considered: in the binary subsystems Cr4Al11, CrNi2 and Ni3Al4 have been added and the model of the γ-L phase (hR26 –Cr5Al8 type) has been modified to four sublattices. The order-disorder model has been used to describe the A2/B2 and A1/L12 phase relations, respectively. Three ternary compounds in the Al-rich region have been introduced for the first time. Thermodynamic interaction parameters have been optimized using all the available experimental data. On the basis of the thermodynamic database implemented in this work stable isothermal and vertical sections have been calculated, which can fit experimental results in the whole composition range, including the aluminum-rich part of the system
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