کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8004276 | 1516582 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Universality of slip avalanches in a ductile Fe-based bulk metallic glass
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Intermittent serrated flows of a novel ductile Fe60 Ni20 P13 C7 bulk metallic glass (BMG) at variant strain rates were investigated by statistics analysis. Peak and clutter distribution of slip-avalanche magnitudes are displayed during stable plastic flows at strain rates of 2Ã10â4 sâ1 and 5Ã10â5 sâ1, respectively, which means that serration behavior depends on the strain rate. However, the remarkable agreement between measured slip-avalanche magnitudes and the scaling behavior, i. e. a universal complementary cumulative distribution function (CCDF) predicted by mean-field theory (MFT) model, indicates that the plasticity of the present Fe-based BMGs can be tuned by imposed strain rates:
Smaxâ¼ÉË-λ. This tuned plasticity is elucidated with expended free-volume model. Moreover, the scaling behavior of serrated flows for other strain rates can be predicted as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Iron and Steel Research, International - Volume 24, Issue 4, April 2017, Pages 366-371
Journal: Journal of Iron and Steel Research, International - Volume 24, Issue 4, April 2017, Pages 366-371
نویسندگان
Jiao-jiao Li, Jun-wei Qiao, Karin A. Dahmen, Wei-ming Yang, Bao-long Shen, Ming-wei Chen,