Thermodynamic modeling of the Mg–Si system with the Kaptay equation for the excess Gibbs energy of the liquid phase

Yuan, Xiaoming; Sun, Weihua; Du, Yong; Zhao, Dongdong; Yang, Huaming

doi:10.1016/j.calphad.2009.08.004

Cited by 42 publications

(23 citation statements)

References 36 publications

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“…The recent thermodynamic assessment of the Mg-Si system has been conducted by several groups of authors. [26][27][28][29][30] Yan et al [26] and Kevorkov et al [27] used 6 and 4 parameters, respectively, to describe the liquid phase. Jung et al [28] modeled this system using the modified quasichemical model to describe the liquid phase, in which 4 parameters were introduced for the liquid phase.…”

Section: The Binary Systemsmentioning

confidence: 99%

“…Jung et al [28] modeled this system using the modified quasichemical model to describe the liquid phase, in which 4 parameters were introduced for the liquid phase. Yuan et al [29] applied an exponential formulation to describe the excess Gibbs energy of the liquid phase. Schick et al [30] reassessed the Mg-Si system to resolve the uncertainties in the Gibbs energy of the Mg 2 Si phase by means of a hybrid approach of ab initio, experimental and CALPHAD.…”

Section: The Binary Systemsmentioning

confidence: 99%

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Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Song

et al. 2015

J. Phase Equilib. Diffus.

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Based on the critical review of the available experimental phase equilibrium data for the constituent quaternary systems in the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni quinary systems, a set of self-consistent thermodynamic parameters for these systems has been obtained using the CALPHAD approach. In combination with the constituent binary, ternary and quaternary systems, the thermodynamic database for the quinary Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni systems was developed. Comprehensive comparisons between the calculated and measured phase diagrams and invariant reactions showed that the experimental data were satisfactorily accounted for by the present thermodynamic description. The established database was used to describe the solidification behaviors of Al alloys 6063 (Al-0.39Si-0.20Fe-0.43Mg, in wt.%) and 2618 (Al-2.24Cu-1.42Mg-0.9Fe-0.9Ni, in wt.%) under Gulliver-Scheil non-equilibrium condition. The reliability of the present thermodynamic database was also verified by the good agreement between the Gulliver-Scheil calculation and experiment.

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Section: The Binary Systemsmentioning

confidence: 99%

Section: The Binary Systemsmentioning

confidence: 99%

Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Song

et al. 2015

J. Phase Equilib. Diffus.

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“…no inverse miscibility gap appears at high temperature due to special temperature dependence of mixing parameters. However, with the presented parameters by Tang et al [12] and Yuan et al [14] it is not possible to reproduce the experimental data of the ternary system like all T-x-sections from Sch€ urmann and Fischer [15] or the solubility of Mg 2 Si in fcc-(Al) measured by Hanson and Gaylor, [16] Dix et al [17] and Westlinning and Klemm. [18] Therefore, the dataset by Lacaze and Valdes [11] is used in the present study.…”

Section: Thermodynamic Descriptionmentioning

confidence: 97%

Phase Relations in the A356 Alloy: Experimental Study and Thermodynamic Calculations

Zienert

Fabrichnaya

2013

Adv Eng Mater

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A thermodynamic database of the Al-rich side of the Al-Fe-Mg-Si system was derived and it was used to calculate phase transitions and solidification behavior of a commercial A356 alloy. The predicted phase transitions were examined by DTA experiments and micrograph investigations using SEM/EDX/EBSD. The experimental results are in a good agreement with the calculated Scheil-solidification behavior.

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“…From the phase diagram, [10,11] as well as the anti-fluorite structure, the magnesium silicide phase is exactly stoichiometric and the ratio of the concentration of Mg to Si in the intermetallic phase is precisely 2. Following the phase diagram and the stoichiometric assumption, there is no chance to establish a concentration gradient in the intermetallic phase and, therefore, the intermetallic layer is a "diffusion barrier", wherein the substitution-diffusion is not permitted.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams

et al. 2017

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The present work explores the growing behavior of the intermetallic layer in the Mg-Si system. Following achievements have been obtained in our investigation: (i) A complete wetting concept is proposed for the lateral spreading of the intermetallic layer. (ii) In contrast to the stoichiometric property for the intermetallic phase in the phase diagram, the authors show that concentration gradients are able to be established in the kinetic process. (iii) Contrary to the reported growth behavior, d / t 0.25-0.5 in other intermetallics, the authors find a transition from d / ffiffi t p to d / t with an increase of the temperature, where d is the thickness of the intermetallic layer and t is the time.

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Thermodynamic modeling of the Mg–Si system with the Kaptay equation for the excess Gibbs energy of the liquid phase

Cited by 42 publications

References 36 publications

Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Phase Relations in the A356 Alloy: Experimental Study and Thermodynamic Calculations

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams

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Thermodynamic modeling of the Mg–Si system with the Kaptay equation for the excess Gibbs energy of the liquid phase

Cited by 42 publications

References 36 publications

Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Thermodynamic Description of the Al-Fe-Mg-Ni-Si and Al-Cu-Fe-Mg-Ni Quinary Systems and Its Application to Solidification Simulation

Phase Relations in the A356 Alloy: Experimental Study and Thermodynamic Calculations

Numerical and Experimental Investigations on the Growth of the Intermetallic Mg2Si Phase in Mg Infiltrated Si‐Foams

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Product

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Numerical and Experimental Investigations on the Growth of the Intermetallic Mg₂Si Phase in Mg Infiltrated Si‐Foams