Thermodynamic description of the Al–Fe–Mg–Mn–Si system and investigation of microstructure and microsegregation during directional solidification of an Al–Fe–Mg–Mn–Si alloy

Du, Yong; Chang, Y. A.; Liu, Shuhong; Huang, Baiyun; Xie, Fanyou; Yang, Ying; Chen, S.-L.

doi:10.3139/146.101185

Cited by 33 publications

(4 citation statements)

References 25 publications

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“…The Quarternary Systems. The thermodynamic parameters of the Al-Cu-Mg-Si system and Al-Fe-Mg-Si system are from the literature [22] and [23], respectively. No quaternary phase was reported in the quaternary Al-Cu-Fe-Mg system.…”

Section: Evaluation Of Phase Diagram Informationmentioning

confidence: 99%

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Mg, Al-Cu-Mg-Si, and Al-Fe-Mg-Si Quaternary Systems on Al-Rich Corner

Zhao

Zhang

et al. 2020

MSF

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The thermodynamic calculations of Al-Cu-Fe-Mg, Al-Cu-Mg-Si and Al–Fe–Mg–Si quaternary systems were carried out using CALPHAD method, based on the Al–Cu–Fe–Mg–Si thermodynamic database. The liquidus projection of Al–Cu–Fe–Mg, Al–Cu–Mg–Si and Al–Fe–Mg–Si quaternary systems at Al-rich corner were constructed, and the solidification structures of Al-12Cu-7Mg-1Fe, Al-14Cu-2Mg-4Si, Al-0.3Fe-6Mg-12Si (wt.%) alloys were analyzed by the Scheil solidification simulation. The calculated results agree well with the previous experimental data. The liquidus projections of three quaternary aluminum alloys at the Al-rich corner were accurately plotted, which could be helpful for the analysis of solidification process of multicomponent alloy systems, and provide an important theoretical basis for the material design of aluminum alloys.

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Section: Evaluation Of Phase Diagram Informationmentioning

confidence: 99%

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Mg, Al-Cu-Mg-Si, and Al-Fe-Mg-Si Quaternary Systems on Al-Rich Corner

Zhao

Zhang

et al. 2020

MSF

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“…The Quarternary and Quinary Systems. The thermodynamic parameters of the Al-Cu-Mg-Si system and Al-Fe-Mg-Si system are from the literature [23] and [24], respectively. No quaternary phase was reported in the quaternary Al-Cu-Fe-Si, Al-Cu-Fe-Mg and Cu-Fe-Mg-Si systems.…”

Section: Evaluation Of Phase Diagram Information In the Literaturementioning

confidence: 99%

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Si and Al-Cu-Fe-Mg-Si Multicomponent Systems on Al-Rich Side

Zhao

Zhang

et al. 2020

MSF

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The thermodynamic calculations of Al–Cu–Fe–Si quaternary system and Al–Cu–Fe–Mg–Si quinary system were carried out using CALPHAD approach based on the Al–Cu–Fe–Mg–Si thermodynamic database. The liquidus surface projection of Al–Cu–Fe–Si quaternary system at the Al-rich corner was constructed, and then the solidification structures of four Al–Cu–Fe–Si alloys were analyzed by the Gulliver-Scheil solidification simulation. The calculated results were in good agreement with the previous experimental data. The liquidus surface projections of A1–Cu–Fe–Mg–Si quinary system at the region of Al-Cu, Al-Si and Al-Mg were constructed, respectively. The liquidus projection of the multicomponent aluminum alloy system at the Al-rich side was accurately drawn, which could accurately predict the primary phase in the solidification process of the alloy. This work has an important guiding significance for the design of the aluminum alloys.

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“…Many authors have developed intricate models and characterization techniques to study particular microstructural features or individual aspects of the process chain. Starting from solidification during ingot casting, Du et al [9] employed a numerical micromodel approach for the prediction of intermetallic phase formation and microsegregation in A356 alloy and compared the model with equilibrium and Scheil-Gulliver solidification calculations. The model incorporated solid back-diffusion, dendrite tip and eutectic undercooling and used an optimized thermodynamic database description for the Al-Mg-Si-Fe-Mn system.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution in a 6060 Extrudable Al-Alloy: Integrated Modeling and Experimental Validation

Aristeidakis,

Haidemenopoulos,

Bjørge

et al. 2024

Materials

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Desirable properties including strength, ductility and extrudability of 6060 Al-alloys are highly dependent on processing to control the development of microstructural features. In this study, the process chain of an extrudable 6060 Al-alloy was modeled in an Integrated Computational Materials Engineering framework and validated experimentally via quantitative SEM-EDX and TEM. All critical processing stages were considered including casting, homogenization heating and holding, extrusion cooling and two-stage aging. Segregation and intermetallics formation were accurately predicted and experimentally verified in the as-cast condition. Diffusion simulations predicted the dissolution of intermetallics and completion of β-AlFeSi to α-AlFeSi transformation during homogenization, in excellent agreement with quantitative SEM-EDX characterization. Precipitation simulations predicted the development of a β″ strengthening dispersion during extrusion cooling and aging. Needle-shaped β″ precipitates were observed and analyzed with quantitative high-resolution TEM, validating predictions. Ensuing precipitation strengthening was modeled in terms of aging time, presenting good agreement with yield strength measurements. Precipitate-Free Zones and coarse, metastable β-type particles on dispersoids and grain boundaries were investigated. The proposed integrated modeling and characterization approach considers all critical processing stages and could be used to optimize processing of extrudable 6xxx Al-alloys, providing insight to mechanisms controlling microstructural evolution and resulting properties.

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Thermodynamic description of the Al–Fe–Mg–Mn–Si system and investigation of microstructure and microsegregation during directional solidification of an Al–Fe–Mg–Mn–Si alloy

Cited by 33 publications

References 25 publications

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Mg, Al-Cu-Mg-Si, and Al-Fe-Mg-Si Quaternary Systems on Al-Rich Corner

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Mg, Al-Cu-Mg-Si, and Al-Fe-Mg-Si Quaternary Systems on Al-Rich Corner

Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Si and Al-Cu-Fe-Mg-Si Multicomponent Systems on Al-Rich Side

Microstructural Evolution in a 6060 Extrudable Al-Alloy: Integrated Modeling and Experimental Validation

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