کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1600783 1005175 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dual character of stable shear banding in bulk metallic glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Dual character of stable shear banding in bulk metallic glasses
چکیده انگلیسی

In this work, a systematical study of the stable shear banding behavior is performed across a wide range of alloy compositions of bulk metallic glasses (BMGs). Through microcompression, it can be demonstrated that the stable shear banding behavior could exhibit a dual character of stochastic and deterministic propagations. Different from the stochastic character, which is found insensitive to sample sizes, the deterministic character displays a clear trend of a sample size effect, which can be captured by the energy balance principle. Based on the theoretical framework laid out in this work, a correlation between the plastic energy dissipation and the sample size effect is established, which can be then utilized to explore the influence of the alloy’s chemical compositions on the behavior of shear-induced material softening. Finally, the energy-based formalisms aimed to quantify the shear banding size effect in MGs are discussed.

Figure optionsDownload as PowerPoint slideHighlights
► The statistical and deterministic character of stable shear banding.
► The relationship between shear-band offset and metallic-glass sample size.
► The effect of alloy composition on the resistance of metallic glasses against shear banding.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 19, Issue 7, July 2011, Pages 1005–1013
نویسندگان
, , , ,