کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5435853 1509545 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Homogeneous flow and size dependent mechanical behavior in highly ductile Zr65Ni35 metallic glass films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Homogeneous flow and size dependent mechanical behavior in highly ductile Zr65Ni35 metallic glass films
چکیده انگلیسی

Motivated by recent studies demonstrating a high strength - high ductility potential of nano-scale metallic glass samples, the mechanical response of freestanding Zr65Ni35 film with sub-micron thickness has been investigated by combining advanced on-chip tensile testing and electron microscopy. Large deformation up to 15% is found for specimen thicknesses below 500 nm with variations depending on specimen size and frame compliance. The deformation is homogenous until fracture, with no evidence of shear banding. The yield stress is doubled when decreasing the specimen cross-section, reaching ∼3 GPa for small cross-sections. The fracture strain variation is related to both the stability of the test device and to the specimen size. The study concludes on clear disconnect between the mechanisms controlling the onset of plasticity and the fracture process.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 131, 1 June 2017, Pages 246-259
نویسندگان
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