کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1482048 1510482 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal stability and crystallization phenomena of low cost Ti-based bulk metallic glass
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Thermal stability and crystallization phenomena of low cost Ti-based bulk metallic glass
چکیده انگلیسی

The thermal stability, kinetics of crystallization, and glass forming ability of a Ti48Ni32Cu8Si8Sn4 bulk amorphous alloy have been studied by differential scanning calorimetry using both isothermal and non-isothermal experiments. The activation energy, frequency factor, and reaction rate for the crystallization cascade were determined via the Kissinger method. X-ray diffractometry and transmission electron microscopy studies revealed that crystallization starts with the primary precipitation of Ti(Ni,Cu), followed by the nucleation of Cu3Ti from the amorphous precursor. The kinetics of nucleation of the primary crystalline phase was also investigated using the Johnson–Mehl-Avrami method and the Avrami exponent, n, was determined. This new alloy possesses a significantly larger supercooled liquid region than any other non beryllium- or non rare earth – containing titanium-based bulk metallic glass to date.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 357, Issues 19–20, October 2011, Pages 3393–3398
نویسندگان
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