کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8004315 | 1516582 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Statistical analysis on strain-rate effects during serrations in a Zr-based bulk metallic glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
By means of statistical analysis, the deformation mechanisms taking place in elastic loading and plastic shearing stages during serrated flows on the stress-strain curves for bulk metallic glasses were studied comprehensively. Normalized serration number presented a linear increasing tendency with the decrease of applied strain rates due to the reduction of free volumes. An excellent plastic deformation was illustrated from the influences of structure arrangement with activation energy. By using mean-field theory (MFT), maximum elastic-energy density at different strain rates could be predicted by MFT besides maximum stress drops during serrations. These results were helpful for understanding the serrated flow behavior or designing decent schemes to improve the plasticity of bulk metallic glasses at room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Iron and Steel Research, International - Volume 24, Issue 4, April 2017, Pages 455-461
Journal: Journal of Iron and Steel Research, International - Volume 24, Issue 4, April 2017, Pages 455-461
نویسندگان
Bo Yuan, Jiao-jiao Li, Jun-wei Qiao,