Experimental investigation and thermodynamic calculations of the Al–Cu–Sb phase diagram

• Published in: Journal of alloys and compounds Vol. 555; pp. 347 - 356
• Main Authors: Minić, Duško, Premović, Milena, Ćosović, Vladan, Manasijević, Dragan, Živković, Dragana, Kostov, Ana, Talijan, Nadežda
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 05.04.2013; Elsevier
• Subjects: Aluminum; Al–Cu–Sb system; Computer simulation; Cross-disciplinary physics: materials science; rheology; Differential thermal analysis; Exact sciences and technology; Materials science; Mathematical analysis; Mathematical models; Phase diagram; Phase diagrams; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase transformations; Physics; Thermal analysis; Thermodynamic prediction; Thermodynamics; Thermal analysis; Al–Cu–Sb system; Phase diagram; Thermodynamic prediction; Scanning electron microscopy; Phase diagrams; Ternary systems; Liquidus; Antimony; Aluminium; Differential thermal analysis; Al―Cu―Sb system; Thermodynamic model; Isothermal section; Copper
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2012.12.059

► Experimental and thermodynamic assessments of the Al–Cu–Sb system were carried out. ► Three vertical sections: Sb–Al0.5Cu0.5, Al–Cu0.5Sb0.5 and Cu–Al0.5Sb0.5 were defined. ► Calculated horizontal section was validated by SEM–EDX analysis of alloy samples. ► Liquidus surface projection was calculated and invariant reactions were defined. ► Good agreement between the calculations and experimental data was obtained. Phase diagram of the Al–Cu–Sb ternary system was investigated experimentally by DTA and SEM–EDS methods and theoretically by CALPHAD method. The liquidus projection, invariant equilibria, three vertical sections: Sb–Al0.5Cu0.5, Al–Cu0.5Sb0.5 and Cu–Al0.5Sb0.5 as well as isothermal sections at 400°C and 200°C were predicted using COST MP0602 thermodynamic database. In addition, phase transition temperatures of the selected samples with compositions along calculated isopleths were experimentally determined using DTA. Experimentally obtained phase transition temperatures were compared with the results of thermodynamic calculation. Predicted isothermal sections at 400°C and 200°C were compared with the results of the SEM–EDS analysis from this work. In both cases, a good agreement between theoretical calculations and experimental results was obtained.