کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8004286 1516582 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Slow β relaxation in La-based metallic glasses based on mechanical spectroscopy measurements
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Slow β relaxation in La-based metallic glasses based on mechanical spectroscopy measurements
چکیده انگلیسی
Dynamic mechanical relaxations of La-based metallic glasses were investigated by mechanical spectroscopy. In the framework of the mixing enthalpy of constituent atoms, it was found that β relaxation was less evident by the addition of Cu to replace Ni in the LaCuNiAl glassy alloy. By introducing Cu into the LaNiAl metallic glass, the mixing enthalpy was less negative, which led to weaker β relaxation of the metallic glasses. The α relaxation of the La-based metallic glasses could be described by a Kohlrausch-Williams-Watts (KWW) function with a Kohlrausch exponent βKWW around 0.5. It should be noted that physical aging above the glass transition temperature Tg induced a decrease of β relaxation intensity in the La-based metallic glass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Iron and Steel Research, International - Volume 24, Issue 4, April 2017, Pages 397-401
نویسندگان
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