کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7881178 1509596 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation
ترجمه فارسی عنوان
تغییرات ساختاری عینک های فلزی با سرعت سریع یون بمباران شده توسط اشعه ایکس اشعه ایکس با انرژی بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Modifications of structural arrangements including relaxation processes were investigated in swift-heavy-ion-bombarded Fe73Cu1Nb3Si16B7 metallic glass. The irradiation of as-quenched amorphous ribbons was accomplished with 3 MeV u−1 (u is atomic mass unit) and 11.1 MeV u−1 Au ions with total fluences of up to 1 × 1013 ions cm−2. Specimens irradiated with 3 MeV u−1 ions were subsequently annealed for 4 h at 350 °C. Ion-irradiated samples including those heat-treated were studied using in situ temperature-dependent diffraction of high-energy X-ray synchrotron radiation (wavelength of 0.020689 nm). Cyclic heating-cooling regimes were applied during the measurements. A tendency towards a higher degree of disorder was revealed as a function of the ion fluence in both types of alloys. During the first heating-cooling cycle, a remarkable hysteresis is observed in the position and line width of the first diffraction peak, especially in the as-quenched irradiated alloys. The hysteresis increases with rising ion fluence but vanishes completely after the first heating-cooling cycle. No hysteresis is found in the irradiated and subsequently annealed alloys. The irradiation-induced structural modifications have some features similar to the effects caused by mechanical deformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 80, November 2014, Pages 309-316
نویسندگان
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