کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7955149 | 1513802 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic re-assessment of the Re-X (X=Al, Co, Cr, Ta) binary systems
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Rhenium was one of important alloying elements in the Ni-based superalloys. Based on the molar Gibbs energy of the pure Re updated in SGTE Pure 5 database, the Re-X(X=Al, Co, Cr, Ta) systems were re-optimized by means of CALPHAD (CALculation of PHAse Diagrams) technique. In the present work, the phases liquid, fcc, bcc and hcp were described using a substitutional solution model. The phases AlRe, Al3Re, Al6Re, Al12Re, AlRe2 and Al11Re4 in the Re-Al system were described as stochiometric compound. The Al4Re_H and Al4Re_L instead of Al4Re were evaluated in the present work. The phases Ï in the Re-Cr and Re-Ta systems and Ï in the Re-Ta system were modeled as (X, Re)10(X, Re)20 (X=Cr or Ta) and Re24(Re, Ta)10(Re, Ta)24, respectively. A set of self-consistent thermodynamic parameters of the Re-X systems were obtained and the optimized results were in good agreement with the experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Calphad - Volume 61, June 2018, Pages 33-40
Journal: Calphad - Volume 61, June 2018, Pages 33-40
نویسندگان
Cuiping Guo, Tianfeng Wu, Changrong Li, Zhenmin Du,