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Based on the available thermodynamic information and diffusion coefficient data of the Au–Ni system, the atomic mobility of Au and Ni in face-centred cubic (fcc) Au–Ni alloys has been assessed as a function of temperature and composition in terms of the CALPHAD method. Optimized mobility parameters are presented. Comparisons between the calculated and measured diffusion coefficients show that most...
On the basis of the available thermodynamic parameters and experimental data of tracer diffusivity, intrinsic diffusivity and chemical diffusivity in the Cu–Ni binary system, the atomic mobilities of Cu and Ni in face-centered cubic (fcc) Cu–Ni alloys have been assessed as a function of temperature and composition using the CALPHAD approach and DICTRA software package. Comparisons between the calculated...
Based on the available thermodynamic information and diffusion coefficient data of the Cu–Sn binary system, the atomic mobilities of Cu and Sn in face-centered cubic (fcc) Cu–Sn alloys have been assessed as a function of temperature and composition in terms of the CALPHAD method using the DICTRA ® software package. Optimized mobility parameters are presented. To testify the reliability of...
Based on various kinds of experimental diffusivities and thermodynamic parameters available in the literature, the atomic mobilities of Al and Cu in face-centered cubic (fcc) Al–Cu alloys have been assessed as a function of temperature and composition by means of DIffusion Controlled TRAnsformation (DICTRA) software package. Comprehensive comparisons between the calculated and measured diffusivities...
Abundant experimental diffusion data were evaluated to assess the atomic mobilities for the fcc phase of the Al–Cu, Cu–Zn and Al–Cu–Zn systems. Comprehensive comparisons show that good agreements were obtained between calculated and experimental values not only for the diffusion coefficients, but also for diffusion/solidification processes resulting from interdiffusion, such as the Kirkendall shift...
Various experimentally measured diffusivities of fcc Al–Mg, Cu–Mg and Al–Cu–Mg alloys available in the literature are critically reviewed in the present work. The first-principles calculations coupled with a semi-empirical correlation is employed to derive the temperature dependence of impurity diffusivity for Mg in fcc Cu. Atomic mobilities for the above fcc alloys are then evaluated as a function...
Based on critical review of interdiffusivities, tracer diffusivities and impurity diffusivities available in the literature, atomic mobilities of fcc Al-Zn and Ni-Zn alloys are evaluated by means of the DICTRA software. A comprehensive comparison between the calculated diffusivities and the measured ones, as well as that between the model-predicted concentration profiles and the experimental ones,...
Based on the available thermodynamic information and diffusion coefficient data of the Ag–Zn binary system, the atomic mobilities of Ag and Zn in face-centred cubic (fcc) Ag–Zn alloys have been assessed as a function of temperature and composition in terms of the CALPHAD method using the DICTRA software package. Optimized mobility parameters are presented. Comparisons between the calculated and measured...
Diffusion in Ag-based solders is a practical topic that has attracted world-wide attention. With the available experimental data in the literature, the atomic mobilities of Ag, Cd and Sn in fcc Ag–Cd and Ag–Sn alloys are critically explored in this work. The proposed atomic mobility parameters can reproduce a great majority of experimental data, including impurity diffusion coefficients, tracer diffusion...
On the basis of the critically reviewed experimental diffusivities available in the literature, the atomic mobilities of Cu, Mn and Ni in fcc Cu–Mn–Ni alloys were assessed as a function of temperature and composition by means of DICTRA (DIffusion Controlled TRAnsformation) software. Comprehensive comparisons between the calculated results and the experimental data show that a good agreement is obtained...
Using solid/solid diffusion couples and the electron probe microanalysis (EPMA) technique, the interdiffusion coefficients in fcc Cu–Al–Fe alloys at 1273 K were determined by means of Whittle and Green’s method. Based on the atomic mobilities of three sub-binary systems available in the literature and the interdiffusivities determined, the atomic mobilities in fcc Cu–Al–Fe alloys were assessed by...
Based on critically reviewed experimental diffusion data available in the literature, atomic mobilities of Fe, Si, Cu and Zn in bcc_A2 Fe–Cu, Fe–Si and Fe–Zn alloys were assessed as a function of temperature and composition by means of DICTRA simulation package. Semi-empirical correlations were used to obtain the self-diffusivities of Cu, Si and Zn in the metastable bcc_A2 phase. Comprehensive comparisons...
Diffusion in Al-based alloys is a practical topic that is essential to guide the design of materials. Based on various kinds of experimental diffusivities and thermodynamic parameters, the atomic mobilities in fcc Al–Ag alloys have been assessed as a function of temperature and composition using the DICTRA software package in this work. The calculated results are in good agreement with the experimental...
Based on the available thermodynamic information and diffusion coefficient data of the binary fcc Ag–Cu and Ag–Pd alloys, the atomic mobilities of fcc Ag–Cu and Ag–Pd alloys have been assessed as a function of temperature and composition in terms of the CALPHAD method using the DICTRA software package. The comparison between calculated and experimental diffusion coefficients indicates that most of...
The atomic mobilities of the fcc Ni–Nb and Ni–Mo binary system have been assessed on the basis of the available kinetic information and given as functions of temperatures and composition in the CALPHAD format using the DICTRA software package in this work. Good agreement between the calculated and reported experimental diffusion coefficients is obtained. By using optimized mobility parameters, the...
Based on the thermodynamic description, experimental diffusion coefficients and empirical relations, the atomic mobilities of Al and Zr in fcc_Al, bcc_Zr and hcp_Zr phases have been optimized. From the comparisons between the calculated and measured diffusion coefficients, it can be seen that most of the experimental data are reproduced well. A good prediction was also made in the composition–distance...
Based on three groups of Ni/Ni–9at% Ge diffusion couples, interdiffusion coefficients were determined in the face-centered (fcc_A1) Ni–Ge alloys at 1173, 1273 and 1373K by means of the Boltzmann–Matano method coupled with electronic probe microanalysis (EPMA) technique. On the basis of various critically-reviewed experimental diffusivities as well as the available thermodynamic descriptions, atomic...
The thermodynamic parameters of Co–Re and Co–Ru systems were assessed using the CALPHAD technique. Based on various experimentally measured diffusivities and the thermodynamic parameters, the atomic mobility for the fcc phase of Ni–Co–X (X=Re, Ru) system was assessed using the DICTRA software. Comprehensive comparisons between calculated and experimental diffusion coefficients showed that the experimental...
The interdiffusion coefficients in fcc Co–Cr–W alloys at 1373K have been determined from the concentration profiles across the solid–solid diffusion couples using the Whittle and Green method. On the basis of the experimental interdiffusion coefficients in this work, together with the critically reviewed experimental diffusivities available in the literature, atomic mobilities of Co, Cr and W in fcc...
Experimental diffusion data were critically assessed to develop the atomic mobility for the bcc phase of the Ti–Al–Fe system by using the DICTRA software. Good agreements were obtained from comprehensive comparisons made between the calculated and the experimental diffusion coefficients. The developed atomic mobility was then validated by well predicting the interdiffusion behavior observed from the...
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