Propagation of shear bands in a Cu47.5Zr47.5Al5 bulk metallic glass

被引：0
|
作者：
K.B. Kim
J. Das
M.H. Lee
S. Yi
E. Fleury
Z.F. Zhang
W.H. Wang
J. Eckert
机构：
[1] Sejong University,Faculty of Nanotechnology and Advanced Materials Engineering
[2] Leibniz Institute for Solid State and Materials Research (IFW) Dresden,Department of Materials Sciences and Metallurgy
[3] Institute for Complex Materials,undefined
[4] Kyungpook National University,undefined
[5] Advanced Metals Research Center,undefined
[6] Korea Institute of Sciences and Technology,undefined
[7] Shenyang National Laboratory for Materials Science,undefined
[8] Institute of Metal Research,undefined
[9] Chinese Academy of Sciences,undefined
[10] Institute of Physics,undefined
[11] Chinese Academy of Sciences,undefined
来源：
Journal of Materials Research | 2008年 / 23卷
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摘要：
We report a novel finding of slither propagation of shear bands on the fracture surface of a Cu47.5Zr47.5Al5 bulk metallic glass (BMG). The nanoscale heterogeneities in the as-cast state are aggregated along shear bands with irregular morphology. Such heterogeneities create a fluctuating stress field during shear band propagation leading to a slither propagation mode. The slither propagation of 10 to 15 nm wide shear bands is effective to improve both the plasticity and the “work-hardening-like” behavior of BMGs if the size, the morphology, and the elastic properties of the heterogeneities are intimately intercalated during solidification.
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页码：6 / 12
页数：6
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