کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1559463 999362 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic re-assessment of the Al–Ir system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Thermodynamic re-assessment of the Al–Ir system
چکیده انگلیسی

The thermodynamic assessment of the Al–Ir binary system was performed using the CALPHAD technique. The B2-AlIr phase was described, using the two sublattice model with the formula (Al,Ir,V a)1/2(Al,Ir,V a)1/2, while Al9Ir2, Al3Ir, Al13Ir4, Al45Ir13, Al28Ir9, and Al2.7Ir compounds were treated as stoichiometric compounds. The fcc-based phases (L10-AlIr, L12-Al3Ir, L12-AlIr3 and A1) were described using the four sublattice model with the formula, (Al,Ir)1/4(Al,Ir)1/4(Al,Ir)1/4(Al,Ir)1/4. From ab initio calculations (VASP) the formation enthalpies of the stable/metastable intermetallic phases involved in the Al–Ir system were estimated. The thermodynamic quantities, such as the phase equilibria, invariant reactions, and formation enthalpies of the intermetallic phases, were calculated using the obtained parameter set, and agree well with experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Calphad - Volume 32, Issue 4, December 2008, Pages 686–692
نویسندگان
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