کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1580924 1514847 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selection of new glass-forming compositions in Al–La system using a combination of topological instability and thermodynamic criteria
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Selection of new glass-forming compositions in Al–La system using a combination of topological instability and thermodynamic criteria
چکیده انگلیسی

A combination of an extension of the topological instability “λ criterion” and a thermodynamic criterion were applied to the Al–La system, indicating the best range of compositions for glass formation. Alloy compositions in this range were prepared by melt-spinning and casting in an arc-melting furnace with a wedge-section copper mold. The GFA of these samples was evaluated by X-ray diffraction, differential scanning calorimetry and scanning electron microscopy. The results indicated that the γ* parameter of compositions with high GFA is higher, corresponding to a range in which the λ parameter is greater than 0.1, which are compositions far from Al solid solution. A new alloy was identified with the best GFA reported so far for this system, showing a maximum thickness of 286 μm in a wedge-section copper mold.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 512, Issues 1–2, 25 June 2009, Pages 53–57
نویسندگان
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